This is also the checking of array that contains specific word: The whole post is available at http://extracatchy.net

array_string_check.php

<?php

$students = array("Rahul, Salim, Aftab, Shahnawaz, Faizal, Sameer");

$stringtocheck = "Aftab";

if(is_our_student($students, $stringtocheck)) {
    echo "It is our student.";
} else {
    echo "Uknown child and he/she is not our student.";
}