The str_replace Function

The str_replace function searches for a given text in a string and replaces it with another. The first parameter is what we replace, and the second is what we replace it with. These can be two strings or two arrays. In the latter case, the corresponding elements of one array will be replaced with the corresponding elements of the second array (see examples).

Syntax

str_replace(array|string $search, array|string $replace, string|array $subject, int &$count = null): string|array

Example

Let's replace all letters 'a' with '!':

<?php
	echo str_replace('a', '!', 'abcabc');
?>

Code execution result:

'!bc!bc'

Example

Let's replace all letters 'a' with 1, letters 'b' with 2, and letters 'c' with 3:

<?php
	echo str_replace(['a', 'b', 'c'], [1, 2, 3], 'abcabc');
?>

Code execution result:

'123123'

Example

Let's replace the given letters with one common specified character:

<?php
	echo str_replace(['a', 'b', 'c'], '!', 'abcabc');
?>

Code execution result:

'!!!!!!'

Example

Let's perform a replacement in each element of the array:

<?php
	$arr = ['abc', 'abc', 'abc'];
	$res = str_replace('a', '!', $arr);
	print_r($res);
?>

Code execution result:

['!bc', '!bc', '!bc']

Example

Case matters:

<?php
	echo str_replace('a', '!', 'Abcabc');
?>

Code execution result:

'Abc!bc'

The str_replace Function

Syntax

Example

Example

Example

Example

Example

See Also