PHP stripslashes() Function

PHP php_strip_whitespace() Function

Last Updated : 23 Jul, 2024

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

<?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__); ?>

PHP stripslashes() Function

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