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

Now with PHP 8 you can do this using str_contains:

if (str_contains('How are you', 'are')) { 
    echo 'true';


Before PHP 8

You can use the strpos() function which is used to find the occurrence of one string inside another one:

$haystack = 'How are you?';

if (strpos($haystack, $needle) !== false) {
    echo 'true';

Note that the use of !== false is deliberate (neither != false nor === true will return the desired result); strpos() returns either the offset at which the needle string begins in the haystack string, or the boolean false if the needle isn’t found. Since 0 is a valid offset and 0 is “falsey”, we can’t use simpler constructs like !strpos($a, 'are').

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