Question

Can anyone suggest how I would do this: Say if I had the string $text which holds text entered by a user. I want to use an ‘if statement’ to find if the string contains one of the words $word1 $word2 or $word3 . Then if it doesn’t, allow me to run some code.

if ( strpos($string, '@word1' OR '@word2' OR '@word3') == false ) {
    // Do things here.
}

I need something like that.

Answer 1

More flexibile way is to use array of words:

$text = "Some text that containts word1";    
$words = array("word1", "word2", "word3");

$exists = false;
foreach($words as $word) {
    if(strpos($text, $word) !== false) {
        $exists = true;
        break;
    }
}

if($exists) {
    echo $word ." exists in text";
} else {
    echo $word ." not exists in text";
}

Result is: word1 exists in text