public static function endsWith($haystack, $needle, $case = true)
{
if ($case) {
return strcmp(Unicode::substr($haystack, Unicode::strlen($haystack) - Unicode::strlen($needle)), $needle) === 0;
}
return strcasecmp(Unicode::substr($haystack, Unicode::strlen($haystack) - Unicode::strlen($needle)), $needle) === 0;
}
/**
* Validates whether a hexadecimal color value is syntactically correct.
*
* @param $hex
* The hexadecimal string to validate. May contain a leading '#'. May use
* the shorthand notation (e.g., '123' for '112233').
*
* @return bool
* TRUE if $hex is valid or FALSE if it is not.
*/
public static function validateHex($hex)
{
// Must be a string.
$valid = is_string($hex);
// Hash prefix is optional.
$hex = ltrim($hex, '#');
// Must be either RGB or RRGGBB.
$length = Unicode::strlen($hex);
$valid = $valid && ($length === 3 || $length === 6);
// Must be a valid hex value.
$valid = $valid && ctype_xdigit($hex);
return $valid;
}
/**
* Returns the string length.
*
* @return int
* The length of the string.
*/
public function count()
{
return Unicode::strlen($this->string);
}
