How to remove spaces in string in php

php method to remove spaces in strings: first create a PHP sample file; then pass "function trimall($str){$qian=array(" ","　","\t"," \n","\r");}" method can remove spaces in the string.

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php removes all spaces in the string

In fact, it is an extension of the trim function

trim can only delete 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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