Variable handling
- Introduction
- Installing/Configuring
- Predefined Constants
- Variable handling Functions
- debug_zval_dump - Dumps a string representation of an internal zend value to output
- 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 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 - Alias of 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 - 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 - 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