PHP›Regex›preg_replace
←preg_match_all

preg_replaceRegex

preg_split→

Perform a regular expression search and replace.

Syntax

preg_replace(string $pattern, string $replacement, string $subject): string|null

Example

Enter values below to update the example in real time.

str→
echo→
preg_replace→
Hello→
World→
$str = "Hello   World";
echo preg_replace('/s+/', ' ', $str); // Hello World