How to remove blank strings in php

How to remove blank strings in php: 1. Delete all blank characters in the string through "preg_replace("/\s /", "", $var); 2. Through "preg_replace( "/\s| /", "",$var);" Remove all whitespace characters including double-width spaces.

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

How to remove blank strings in php?

PHP removes whitespace characters

Example 1:

';
?>

Example 2:

';
?>

Recommended study:《PHP video tutorial》

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