(Yaf >=1.0.0) The clearLocalNamespace purpose

(PECL ps >= 1.1.0) Adds link which launches file

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Calculate square root

(PHP 5, PHP 7) Prints a backtrace void debug_print_backtrace

(PECL solr >= 0.9.2) Adds a field to the document

(PECL radius >= 1.1.0) Attaches a string attribute

(PHP 4, PHP 5, PHP 7) Checks if the class has been defined

(PHP 4, PHP 5, PHP 7) Return info about a group by name

(PHP 5 >= 5.5.5, PHP 7, PECL ZendOpcache > 7.0.2) Get status information about the cache

(PECL trader >= 0.2.0) Vector Trigonometric Cos