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簡介 »
« ReflectionException
PHP 手冊
函式參考
變數與類別相關擴充功能
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Variable handling
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Variable handling 函式
boolval
— Get the boolean value of a variable
debug_zval_dump
— Dumps a string representation of an internal zend value to output
doubleval
— 別名 floatval
empty
— Determine whether a variable is empty
floatval
— Get float value of a variable
get_defined_vars
— Returns an array of all defined variables
get_resource_type
— Returns the resource type
gettype
— Get the type of a variable
import_request_variables
— Import GET/POST/Cookie variables into the global scope
intval
— Get the 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_callable
— Verify that the contents of a variable can be called as a function
is_double
— 別名 is_float
is_float
— Finds whether the type of a variable is float
is_int
— Find whether the type of a variable is integer
is_integer
— 別名 is_int
is_long
— 別名 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
— 別名 is_float
is_resource
— Finds whether a variable is a resource
is_scalar
— Finds whether a variable is a scalar
is_string
— Find whether the type of a variable is string
isset
— Determine if a variable is set and is not NULL
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 parsable string representation of a variable
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