How do you check if a string contains another string in php?
You could use regular expressions as it's better for word matching compared to Show A simple match for
On the performance side, Edit: In order to search any part of the string, not just word by word, I would recommend using a regular expression like
The Now, this
can be quite problematic in some cases as the $search string isn't sanitized in any way, I mean, it might not pass the check in some cases as if Also, here's a great tool for testing and seeing explanations of various regular expressions Regex101 To combine both sets of functionality into a single multi-purpose function (including with selectable case sensitivity), you could use something like this:
One more thing to take in mind, is that The explanation for this and the solution is taken from here:
So in order to use the answer in PHP, you can use this function:
And if you want to search for array of words, you can use this:
As of PHP 8.0.0 you can now use str_contains (PHP 8) str_contains — Determine if a string contains a given substring Descriptionstr_contains(string Parametershaystack
The string to search in. needle The substring to search for in the Return Values Returns ExamplesExample #1 Using the empty string
The above example will output: Checking the existence of the empty string will always return true Example #2 Showing case-sensitivity
str_contains($string, 'lazy')) { The above example will output: The string 'lazy' was found in the string "Lazy" was not found because the case does not match Notes
See Also
scm6079 ¶ 1 year ago
aisunny7 dot xy at gmail dot com ¶ 8 months ago
juliyvchirkov at gmail dot com ¶ 1 year ago
drupalista dot com dot br at gmail dot com ¶ 5 months ago
olivertasche+nospam at gmail dot com ¶ 1 year ago
AuxData ¶ 10 months ago
kadenskinner at gmail dot com ¶ 1 year ago
= '@'; How do you check if a string includes another string?You can use contains(), indexOf() and lastIndexOf() method to check if one String contains another String in Java or not. If a String contains another String then it's known as a substring. The indexOf() method accepts a String and returns the starting position of the string if it exists, otherwise, it will return -1.
What is the use of strpos () function in PHP?strpos in PHP is a built-in function. Its use is to find the first occurrence of a substring in a string or a string inside another string. The function returns an integer value which is the index of the first occurrence of the string.
How check string is value or not in PHP?The is_string() function checks whether a variable is of type string or not. This function returns true (1) if the variable is of type string, otherwise it returns false/nothing.
Is str contains caseNote that strpos() is case sensitive, if you want a case-insensitive search, use stripos() instead.
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