w3resource

PHP: quotemeta() function

Description

The quotemeta() function is used to add backslash character (\) before meta characters i.e. ' .', '\', '+', '*', '?', '[', '^', ']',' (', '$', ')' in a string.

Version:

(PHP 4 and above)

Syntax:

quotemeta (input_string)

Parameter:

Name Description Required /
Optional		 Type
input_string The input string. Required string

Return value:

Returns the string with meta characters quoted.

Value Type: String.

Pictorial Presentation

php-string-quotemeta()

Example: 

<?php
$input_string = 'w3resource.com';
echo quotemeta($input_string);
?>

Output:

w3resource\.com

View the example in the browser

See also

PHP Function Reference

Previous: quoted_printable_ decode
Next: rtrim



PHP: Tips of the Day

PHP: Using str_replace so that it only acts on the first match?

Can be done with preg_replace: 

function str_replace_first($from, $to, $content)
{
    $from = '/'.preg_quote($from, '/').'/';

    return preg_replace($from, $to, $content, 1);
}

echo str_replace_first('abc', '123', 'abcdef abcdef abcdef'); 
// outputs '123def abcdef abcdef'

The magic is in the optional fourth parameter [Limit]. From the documentation:

[Limit] - The maximum possible replacements for each pattern in each subject string. Defaults to -1 (no limit).

Ref : https://bit.ly/35SCuP8