programming php

Ereg_replace PHP

The modified string is returned. [Which may mean that the original string is returned if there are no matches to be replaced. ]

If pattern contains parenthesized substrings, replacement may contain substrings of the form \\digit, which will be replaced by the text matching the digit'th parenthesized substring; \\0 will produce the entire contents of string. Up to nine substrings may be used. Parentheses may be nested, in which case they are counted by the opening parenthesis

If no matches are found in string, then string will be returned unchanged

For example, the following code snippet prints "This was a test" three times

Example 1. ereg_replace[] example

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
2

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
3

One thing to take note of is that if you use an integer value as the replacement parameter, you may not get the results you expect. This is because ereg_replace[] will interpret the number as the ordinal value of a character, and apply that. For instance

Example 2. ereg_replace[] example

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
4

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
5

Example 3. Replace URLs with links

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
6

Mẹo. preg_replace[], which uses a Perl-compatible regular expression syntax, is often a faster alternative to ereg_replace[]

This function scans 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
7 for matches to 
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
8, then replaces the matched text with 
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
9

Parameters

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
8

A POSIX extended regular expression

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
9

If 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
8 contains parenthesized substrings, 
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
9 may contain substrings of the form \digit, which will be replaced by the text matching the digit'th parenthesized substring; \0 will produce the entire contents of string. Up to nine substrings may be used. Parentheses may be nested, in which case they are counted by the opening parenthesis

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
7

The input string

Return Values

The modified string is returned. If no matches are found in 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
7, then it will be returned unchanged

Examples

For example, the following code snippet prints "This was a test" three times

Example #1 ereg_replace[] example

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
62

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
63

One thing to take note of is that if you use an integer value as the 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
9 parameter, you may not get the results you expect. This is because ereg_replace[] will interpret the number as the ordinal value of a character, and apply that. For instance

The ereg_replace[] function searches for string specified by pattern and replaces pattern with replacement if found. The ereg_replace[] function operates under the same premises as ereg[], except that the functionality is extended to finding and replacing pattern instead of simply locating it

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
9

The ereg_replace[] is an inbuilt function in PHP and is used to search a string pattern in an other string. If pattern is found in the original string then it will replace matching text with a replacement string. You may refer to the article on Regular Expression for basic understanding of pattern matching using regular expressions

cú pháp

string ereg_replace [ $string_pattern, $replace_string,  $original_string ]

Parameters Used. This function accepts three mandatory parameters and all of these parameters are described below

  • $string_pattern. This parameter specifies the pattern to be searched in the $original_string. Its can be used with both array and string type which is parenthesized substrings
  • $replace_string. This parameter specifies the string by which the matching text will be replaced and it can be used with both array and string type. The replacement contain substring in the form of \digit, which replaces the text matching digit’th parenthesized substring and \0 produce entire contents string
  • $original_string. This parameter specifies the input string and can be of both array and string type

Return Value. This function returns a modified string or array if matches found. If matches not fount in the original string then it will return unchanged original string or array

Ghi chú. The ereg_replace[] function is case sensitive in PHP. This function was deprecated in PHP 5. 3. 0, and removed in PHP 7. 0. 0

Examples

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.

Below programs illustrate the ereg_replace[] function

Program 1




Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
0

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
1 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
2

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
3 
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
4
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
5
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
0

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
1 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
2

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
3 
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
4
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
5
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
6

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
1 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
8

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
9 
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
4
Write own yours own biography topic.
1
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
6

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
1 

Write own yours own biography topic.
4 
Write own yours own biography topic.
5
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6
Write own yours own biography topic.
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Write own yours own biography topic.
8
Write own yours own biography topic.
9
Write own yours own biography topic.
8
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
81
Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
82

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
1 

Input: $original_string = "Geeksforgeeks PHP article."; 
       $string_pattern = "[.*]PHP[.*]"; 
       $replace_string = " You should read \\1all\\2"; 
Output: You should read Geeksforgeeks all article.
Explanation: Within the parenthesis "\1" and "\2" to access
             the part of string and replace with 'PHP' to 'all'.

Input: $original_string = "Geeksforgeeks is no:one computer 
                                             science portal.";
       $replace_string = '1'; 
       $original_string = ereg_replace['one', $replace_string,
                                             $original_string];
Output: Geeksforgeeks is no:1 computer science portal.
84

đầu ra

Write own yours own biography topic.

Ghi chú. While using an integer value as the replacement parameter, we do not get expected result as the function interpret the number to ordinal value of character

What is Ereg_replace?

The ereg_replace[] is an inbuilt function in PHP and is used to search a string pattern in an other string . If pattern is found in the original string then it will replace matching text with a replacement string.

What is the difference between Ereg_replace [] and Eregi_replace []?

The eregi_replace[] function operates exactly like ereg_replace[], except that the search for pattern in string is not case sensitive .

What is ereg function in PHP?

The Ereg[] function in PHP searches a string to match the regular expression given in the pattern . The function is case-sensitive.

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