PHP variable and type extension function processing and variable processing

PHP variable and type extension function processing and variable processing

Function processing functions:

Call_user_func_array-Call a callback with an array of parameters

Call_user_func-Call the callback given by the first parameter

Create_function-Create an anonymous (lambda-style) function

Forward_static_call_array-Call a static method and pass the arguments as array

Forward_static_call-Call a static method

Func_get_arg-Return an item from the argument list

Func_get_args-Returns an array comprising a function's argument list

Func_num_args-Returns the number of arguments passed to the function

Function_exists-Return TRUE if the given function has been defined

Get_defined_functions-Returns an array of all defined functions

Register_shutdown_function-Register a function for execution on shutdown

Register_tick_function-Register a function for execution on each tick

Unregister_tick_function-De-register a function for execution on each tick

Variable processing functions:

Boolval-Get the boolean value of a variable

Debug_zval_dump-Dumps a string representation of an internal zend value to output

Alias of doubleval-floatval

Empty-check whether a variable is empty

Floatval-get the floating point value of the variable

Get_defined_vars-returns an array consisting of all defined variables.

Get_resource_type-returned resource type

Gettype-get the variable type

Import_request_variables-import GET/POST/Cookie variables to the global scope

Intval-obtains the integer of a variable.

Is_array-check whether the variable is an array

Is_bool-check whether the variable is Boolean

Is_callable-check whether the parameter is a valid callable structure

Is_double-is_float alias

Is_float-check whether the variable is floating point type

Is_int-check whether the variable is an integer

Is_integer-is_int alias

Alias of is_long-is_int

Is_null-check whether the variable is NULL

Is_numeric-check whether the variable is a numeric or numeric string

Is_object-check whether the variable is an object

Alias of is_real-is_float

Is_resource-check whether the variable is of the resource type

Is_scalar-check whether the variable is a scalar

Is_string-check whether the variable is a string

Isset-check whether the variable is set

Print_r-prints easy-to-understand information about variables.

Serialize-generate a representation of a stored value

Settype-set the variable type

Strval-get the string value of the variable

Unserialize-create a PHP value from a stored representation

Unset-release given variables

Var_dump-prints information about a variable.

Var_export-string representation of the output or returned variable