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

In PHP, there are two versions of logical AND and OR operators.

Operator True if
$a and $b Both $a and $b are true
$a && $b Both $a and $b are true
$a or $b Either $a or $b is true
$a || $b Either $a or $b is true

Note that the && and || opererators have higher precedence than and and or. See table below:

Evaluation Result of $e Evaluated as
$e = false || true True $e = (false || true)
$e = false or true False ($e = false) or true

Because of this it's safer to use && and || instead of and and or.