PHP php_strip_whitespace() Function
Last Updated :
23 Jul, 2024
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The php_strip_whitespace() function is an inbuilt function in PHP that is used to remove all comments and whitespace from the source code.
Syntax
string php_strip_whitespace ( $file )Parameters
The php_strip_whitespace() function accepts a single parameter $file. It is a mandatory parameter that specifies the file.
Return Value
It returns the source code of the $file after removing the comments and whitespace on success otherwise it returns an empty string.
Exceptions
- It works on PHP 5.0.1 and later versions, it returns an empty string in previous versions.
- This function works similar as php -w command line.
Example: Below programs illustrate the php_strip_whitespace() function in PHP:
<?php
// Simple program to remove comment
// using php_strip_whitespace function.
// function to calculate fibonacci number
function fib($n) {
if ($n <= 1)
return $n;
return fib($n - 1) + fib($n - 2);
}
// Driver Code
$n = 9;
fib($n);
/*
* One more multiline comment
*/
echo php_strip_whitespace(__FILE__);
// This line also removed
?>
Output
<?php
function fib($n) { if ($n <= 1) return $n; return fib($n - 1) + fib($n - 2); } $n = 9; fib($n); echo php_strip_whitespace(__FILE__); ?>
