You might already know that PHP’s in_array() function matches the string needle case sensitive way. But for matches the string needle case insensitive way in PHP there is nothing. It is quite simple. Here it is:
function in_arrayi($needle, $haystack) { foreach ($haystack as $value) { if (strtolower($value) == strtolower($needle)) return true; } return false; }
Please note that this case-insensitive version is, at least, 5 times slower than in_array().