- strpos: documentation ( source)
- array_reverse: documentation ( source)
- explode: documentation ( source)
<?php
$pattern = "sch";
$b = explode(' ','this is school of sachin');
$b = array_reverse($b);
for($i=0;$i < count($b);$i++){
if(strpos($b[$i],$pattern) !== false){
echo $i+1;
}
}
?>