<?php
$zfi = '';
$arr_whereld=Array(
[0] => 151
[1] => 139
[2] => 140
[3] => 141
)
$arr_wherel =Array(
[0] => 151
[1] => 139
[2] => 140
[3] => 141
[4] => 142
[5] => 143
[6] => 144
[7] => 145
[8] => 146
[9] => 120
[10] => 122
[11] => 124
[12] => 126
)
foreach($arr_whereld as $k){
foreach($arr_wherel as $j => $v){
if(in_array($k,$arr_wherel) && $k==$v){
$arr_wherel[$j]='';
}
}
}
echo '<br>';
foreach($arr_wherel as $v){
if($v){
$zfi.=$v.',';
}
}
echo $whered = substr($zfi,0,-1);
?>