PHP string remove space

Question

Is there php function to remove the space inside the string? for example:

$abcd="this is a test"

I want to get the string:

$abcd="thisisatest"

How to do that?

Answer 1

$abcd = str_replace(' ', '', 'this is a test');

See http://php.net/manual/en/function.str-replace.php

Answer 2

The following will also work

$abcd="this is a test";
$abcd = preg_replace('/( *)/', '', $abcd);
echo $abcd."\n"; //Will output 'thisisatest';

or

$abcd = preg_replace('/\s/', '', $abcd);

See manual http://php.net/manual/en/function.preg-replace.php

• Savageman: There is no need to use a regular expression if he only wants to replaces spaces. It can be useful to replace all "spacing" characters with the \s assertion though.
• Elitmiar: @savageman - str_replace is a better option to use, I posted this as an alternative.
• Syntax Error: Since nobody else said it, I'll go ahead and mention that str_replace is faster than preg_replace. That plus simplicity of use is why it's a preferred alternative. Did not know about \s so thanks for that.
• Elitmiar: @Syntax Error, yip str_replace is faster. Thx for mentioning it.
• maček: overkill. @Gordon's solution is better.

Answer 3

$string = preg_replace('/\s+/', '', $string);