How do I check if a string contains a specific word?

Answer 1

It can be done in three different ways:

 $a = 'How are you?';

1- stristr()

 if (strlen(stristr($a,"are"))>0) {
    echo "true"; // are Found
 } 

2- strpos()

 if (strpos($a, "are") !== false) {
   echo "true"; // are Found
 }

3- preg_match()

 if( preg_match("are",$a) === 1) {
   echo "true"; // are Found
 }