* verified with standard control structures at all times, not just checked in
* development environments with assert() statements on.
*
- * When runtime assertions fail in PHP 7 an \AssertionError is thrown.
- * Drupal uses an assertion callback to do the same in PHP 5.x so that unit
- * tests involving runtime assertions will work uniformly across both versions.
- *
* The Drupal project primarily uses runtime assertions to enforce the
* expectations of the API by failing when incorrect calls are made by code
* under development. While PHP type hinting does this for objects and arrays,
* complex data structures such as cache and render arrays. They ensure that
* methods' return values are the documented datatypes. They also verify that
* objects have been properly configured and set up by the service container.
- * Runtime assertions are checked throughout development. They supplement unit
- * tests by checking scenarios that do not have unit tests written for them,
- * and by testing the API calls made by all the code in the system.
- *
- * When using assert() keep the following in mind:
- * - Runtime assertions are disabled by default in production and enabled in
- * development, so they can't be used as control structures. Use exceptions
- * for errors that can occur in production no matter how unlikely they are.
- * - Assert() functions in a buggy manner prior to PHP 7. If you do not use a
- * string for the first argument of the statement but instead use a function
- * call or expression then that code will be evaluated even when runtime
- * assertions are turned off. To avoid this you must use a string as the
- * first argument, and assert will pass this string to the eval() statement.
- * - Since runtime assertion strings are parsed by eval() use caution when
- * using them to work with data that may be unsanitized.
+ * They supplement unit tests by checking scenarios that do not have unit tests
+ * written for them.
+ *
+ * There are two php settings which affect runtime assertions. The first,
+ * assert.exception, should always be set to 1. The second is zend.assertions.
+ * Set this to -1 in production and 1 in development.
*
* See https://www.drupal.org/node/2492225 for more information on runtime
* assertions.
* Introduction to namespaces
*
* PHP classes, interfaces, and traits in Drupal are
- * @link http://php.net/manual/en/language.namespaces.rationale.php namespaced. @endlink
+ * @link http://php.net/manual/language.namespaces.rationale.php namespaced. @endlink
* See the
* @link oo_conventions Objected-oriented programming conventions @endlink
* for more information.