public static function DrupalTestCase::randomString

7.x drupal_web_test_case.php public static DrupalTestCase::randomString($length = 8)

Generates a random string of ASCII characters of codes 32 to 126.

The generated string includes alpha-numeric characters and common miscellaneous characters. Use this method when testing general input where the content is not restricted.

Do not use this method when special characters are not possible (e.g., in machine or file names that have already been validated); instead, use DrupalWebTestCase::randomName().


$length: Length of random string to generate.

Return value

Randomly generated string.

See also


12 calls to DrupalTestCase::randomString()
CommentContentRebuild::testCommentRebuild in drupal/modules/comment/comment.test
Test to ensure that the comment's content array is rebuilt for every call to comment_view().
ContactSitewideTestCase::testAutoReply in drupal/modules/contact/contact.test
Tests auto-reply on the site-wide contact form.
FieldTranslationsTestCase::setUp in drupal/modules/field/tests/field.test
Set the default field storage backend for fields created during tests.
FormsTestCase::testRequiredCheckboxesRadio in drupal/modules/simpletest/tests/form.test
Tests validation for required checkbox, select, and radio elements.
FormsTestCase::testRequiredTextfieldNoTitle in drupal/modules/simpletest/tests/form.test
Tests validation for required textfield element without title.

... See full list


drupal/modules/simpletest/drupal_web_test_case.php, line 586


Base class for Drupal tests.


public static function randomString($length = 8) {
  $str = '';
  for ($i = 0; $i < $length; $i++) {
    $str .= chr(mt_rand(32, 126));
  return $str;