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<?php $a = "this is school of sachin"; $pattern = "sch"; $b = explode(' ',$a); $b = array_reverse($b); for($i=0;$i < count($b);$i++){ if(strpos($b[$i],$pattern) !== false){ echo $i+1; if($pattern == $b[$i]){ echo ',full word'; } else{ echo '\n not a full word'; } } } ?>

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