php remove double spaces code example

Example 1: remove double space php

$ro = preg_replace('/\s+/', ' ',$row['message']);

Example 2: remove all spaces php

$string = "this is my     string"
$string = preg_replace('/\s+/', '', $string);

Example 3: php remove all whitespace from a string

//remove all white spaces from a string
$whatonearth=preg_replace('/\s/','',"what o n   ear th");