No external libraries are needed to build this extension.
There is no installation needed to use these
functions; they are part of the PHP core.
The behaviour of these functions is affected by settings in php.ini.
| Name | Default | Changeable |
|---|
| unserialize_callback_func | "" | PHP_INI_ALL |
For further details and definition of the PHP_INI_* constants see
ini_set().
Here's a short explanation of
the configuration directives.
-
unserialize_callback_func
string
The unserialize callback function will called (with the undefind class'
name as parameter), if the unserializer finds an undefined class
which should be instanciated. A warning appears if the specified
function is not defined, or if the function doesn't include/implement
the missing class. So only set this entry, if you really want to
implement such a callback-function.
See also unserialize().
This extension has no resource types defined.
This extension has no constants defined.
Table of Contents
- doubleval - Alias of 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 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 - 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