How Can I Check if a PHP String Contains a Specific Word?

Checking String Contains Specific Word

In PHP, verifying if a string contains a particular word can be achieved using built-in functions or string manipulation techniques.

Using str_contains (PHP 8 )

PHP 8 introduces the str_contains function for checking string containment:

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

Note: str_contains considers an empty needle as true, so ensure it's not empty before using it.

Using strpos

For PHP versions prior to 8, strpos can be employed:

$haystack = 'How are you?';
$needle = 'are';

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

Using strstr

Another option is to use strstr:

if (strstr('How are you?', 'are') !== false) {
    echo 'true';
}

Using Regular Expressions

Regular expressions can also be used:

if (preg_match('/are/', 'How are you?')) {
    echo 'true';
}

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