Php insert variable into string
I know this is an old question, but I think someone has to mention all pros & cons: Show Better Syntax: That's personal preference. Performance: No difference. As many mentioned, double-quote might be faster if using unrealistically many variables. Better Usage: Single quote (mostly). As @Khez said, with single quote you can concatenate anything, even function calls and variable modification, like so:
Readability: No difference (may personal preference apply). Writability/Re-Writability/Debugging: In 1-line statements there is no difference, but when dealing with multiple lines, it's easier to comment/uncomment lines while debugging or writing. For example:
Less
Escaping: Single-quote. For single quote you need to escape 2 characters only ( Less Changes: Single quote. For example if you have the following code:
And you need to increment 1 to $i, so it becomes likes:
But for double quote, you will need to change this:
to this:
Conclusion: Use what you prefer. There are two string operators. The first is the concatenation operator ('.'), which returns the concatenation of its right and left arguments. The second is the concatenating assignment operator ('
K.Alex ¶ 9 years ago
= '12345';// This works: anders dot benke at telia dot com ¶ 18 years ago
Stephen Clay ¶ 16 years ago
hexidecimalgadget at hotmail dot com ¶ 13 years ago
mariusads::at::helpedia.com ¶ 14 years ago
biziclop ¶ 20 days ago
How do you pass a variable inside a string in PHP?In PHP, variables can be parsed within strings specified with double quotes ( " ). This means that within the string, the computer will replace an occurence of a variable with that variable's value.
How do you call a variable in PHP?PHP Variables. A variable starts with the $ sign, followed by the name of the variable.. A variable name must start with a letter or the underscore character.. A variable name cannot start with a number.. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ). How do I echo text and variable in PHP?The echo() function outputs one or more strings. Note: The echo() function is not actually a function, so you are not required to use parentheses with it. However, if you want to pass more than one parameter to echo(), using parentheses will generate a parse error.
What are string variables in PHP?String is one of the data types supported by PHP. The string variables can contain alphanumeric characters. Strings are created when; You declare variable and assign string characters to it. You can directly use PHP Strings with echo statement.
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