if not in string php code example

Example 1: php check if string contains word

$myString = 'Hello Bob how are you?';
if (strpos($myString, 'Bob') !== false) {
    echo "My string contains Bob";
}

Example 2: if part of stringp ph

$a = 'How are you?';

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

Example 3: php find if string contains

if (strpos($string, 'substring') !== false) {
	// do stuff 
}

Example 4: php find if substring is in string

$result = strpos("haystack", "needle");

if ($result != false)
{
  // text found
}