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# PHP debug_zval_dump() Function [PHP Available Functions](#) The **debug_zval_dump** function is used to view a variable's reference count and type information in the Zend engine. Version Requirement: PHP 4 >= 4.2.0, PHP 5, PHP 7 ### Syntax void debug_zval_dump ( mixed $variable [, mixed $... ] ) Parameter Description: * $variable: The variable to inspect. ### Return Value No return value. ### Example ## Example The execution result is as follows: string(6) "tutorial" refcount(1)string(6) "tutorial" refcount(1)string(6) "google" refcount(1) [PHP Available Functions](#)