How to remove spaces in string in php

php method to delete spaces in a string: 1. Use str_ireplace() function, syntax "str_ireplace(' ', '', $str)"; 2. Use str_replace() function, syntax "str_replace( ' ', '', $str)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Method 1: Use str_ireplace() Function

<?php
$str = &#39;hello world !&#39;;
$search = &#39; &#39;;
$replace = &#39;&#39;;
echo str_ireplace($search, $replace, $str);
?>

Output:

helloworld!

Method 2: Use str_replace() function

<?php
$str = &#39;hello world !&#39;;
$str = str_replace(&#39; &#39;, &#39;&#39;, $str);
echo $str;
?>

Output:

helloworld!

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