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XCVIII. Variable Functions
For information on how variables behave, see the Variables entry in the Language Reference section of the manual.
- Obsah
- doubleval — Alias of floatval()
- empty — Determine whether a variable is set
- floatval — Get float value of a variable
- gettype — Get the type of a variable
- get_defined_vars — Returns an array of all defined variables
- get_resource_type — Returns the resource type
- import_request_variables — Import GET/POST/Cookie variables into the global scope
- intval — Get integer value of a variable
- is_array — Finds whether a variable is an array
- is_bool — Finds out whether a variable is a boolean
- is_double — Alias of is_float()
- is_float — Finds whether a variable is a float
- is_int — Find whether a variable is an integer
- is_integer — Alias of is_int()
- is_long — Alias of is_int()
- is_null — Finds whether a variable is NULL
- is_numeric — Finds whether a variable is a number or a numeric string
- is_object — Finds whether a variable is an object
- is_real — Alias of is_float()
- is_resource — Finds whether a variable is a resource
- is_scalar — Finds whether a variable is a scalar
- is_string — Finds whether a variable is a string
- isset — Determine whether a variable is set
- print_r — Prints human-readable information about a variable
- serialize — Generates a storable representation of a value
- settype — Set the type of a variable
- strval — Get string value of a variable
- unserialize — Creates a PHP value from a stored representation
- unset — Unset a given variable
- var_dump — Dumps information about a variable
- var_export — Outputs or returns a string representation of a variable
- is_callable — Find out whether the argument is a valid callable construct
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