public static function Color::validateHex in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Component/Utility/Color.php \Drupal\Component\Utility\Color::validateHex()

Validates whether a hexadecimal color value is syntactically correct.

Parameters

$hex: The hexadecimal string to validate. May contain a leading '#'. May use the shorthand notation (e.g., '123' for '112233').

Return value

bool TRUE if $hex is valid or FALSE if it is not.

4 calls to Color::validateHex()

Color::hexToRgb in core/lib/Drupal/Component/Utility/Color.php

Parses a hexadecimal color string like '#abc' or '#aabbcc'.

ColorTest::testValidateHex in core/tests/Drupal/Tests/Component/Utility/ColorTest.php

@covers \Drupal\Component\Utility\Color::validateHex

CreateNew::validateArguments in core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php

Validates the arguments.

RotateImageEffect::validateConfigurationForm in core/modules/image/src/Plugin/ImageEffect/RotateImageEffect.php

Form validation handler.

File

core/lib/Drupal/Component/Utility/Color.php, line 20

Class

Color

Performs color conversions.

Namespace

Drupal\Component\Utility

Code

public static function validateHex($hex) {
  if (!is_string($hex)) {
    return FALSE;
  }
  return preg_match('/^[#]?([0-9a-fA-F]{3}){1,2}$/', $hex) === 1;
}