How to remove spaces from string in php

php method to remove string spaces: first create a PHP sample file; then define a trimall method; finally use "str_replace($qian,$hou,$str);" to implement the function of removing string spaces. Can.

The operating environment of this tutorial: Windows 7 system, PHP version 7.1. This method is suitable for all brands of computers.

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php removes all spaces in the string

In fact, it is the trim function The extension

trim can only remove spaces on both sides of the string

php code

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

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