php：我想从“w; h;”中修剪“h;”以获得“w”; 但我得到的是“w”

Question

The below program is to right trim the string "w;h;" off string "h;" to get "w;". But unexpectedly what I got is "w", not "w;".

<?php

        $string="w;h;";
        $str="h;";
        $nStr=rtrim($string,$str);
        echo $nStr.'</br>';

 ?>

Answer 1

Use str_replace http://php.net/manual/en/function.str-replace.php

$string="w;h;";
$str="h;";
Echo str_replace($str, "", $string);

https://3v4l.org/P9Hbe

Str_replace replaces $str with nothing. Leaving w;