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:

<?php
    $var = "        This           is   a      beautiful        day!";
    // 删除字符串中的所有空白字符（不包括全角空格）
    $var1 = preg_replace("/\s+/", "", $var);
    echo $var1.&#39;<br>&#39;;
?>

Example 2:

<?php
    // 删除字符串中所有的字符（包括全角空格）
    $var = "        　This           is   a      beautiful        day!";
    $var1 =preg_replace("/\s|　/", "", $var);  // 已经包含了全角空格
    echo $var1.&#39;<br>&#39;;
?>

Recommended study:《PHP video tutorial》

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