php remove spaces from string

php method to remove spaces in a string: 1. Use the php function trim to remove; 2. Use the php function str_replace to remove; 3. Use the php function strtr to remove; 4. Use the trimall method to remove; 5. Use regular Remove normal spaces, etc.

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Removing spaces from strings in php

1. Use the php function trim():

 trim($str)

to remove ordinary spaces on both sides of the string;

2. Use the php function: str_replace():

str_replace(' ','',$str)

3. Use the php function: strtr():

strtr($str,array(' '=>''))

4. Use the encapsulation function you wrote:

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

5. Use this regular expression to remove ordinary spaces:

preg_replace('# #', '', $str)

6. Use this regular expression to remove all spaces including full-width spaces:

$str =preg_replace("/\s|　/","",$str);

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