How to remove spaces in string in php

php method to delete spaces in the middle of a string

Method 1: Use regular expressions

The code is as follows:

Method 2: Use str_replace() function

The code is as follows:

Method 3: Use strtr() function

The code is as follows:

'')); // 输出 "abab" ?>

strtr() function is a bit special in use. In essence:

The code is as follows:

 '2', 'w' => '1', 'b' => '3')) == str_replace(array('e', 'w', 'b'), array('2', '1', '3'), 'ewb'); ?>

Method 4: Using the encapsulated function

The code is as follows:

function trimall($str)//删除空格 { $qian=array(" ","　","\t","\n","\r"); $hou=array("","","","",""); return str_replace($qian,$hou,$str); }

Recommended tutorial: "PHP Tutorial"

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