What is Variable handling Functions in PHP ?
Variable handling function in PHP are those function which maintain the property of variable and check for it,whether value of variable is correct or not according to requirement. There are various function for variable handling list is Given below .where $var is a variable
| boolval($var) | Get the boolean value of a variable |
| debug_zval_dump($var) | Dumps a string representation of an internal zend value to output |
| doubleval($var) | Alias of floatval |
| empty($var) | Determine whether a variable is empty |
| floatval($var) | Get float value of a variable |
| get_defined_vars($var) | Returns an array of all defined variable |
| get_resource_type($var) | Returns the resource type |
| gettype($var) | Get the type of a variable |
| import_request_variables | Import GET/POST/Cookie variable into the global scope |
| ntval($var) | i Get the integer value of a variable |
| is_array($var) | Finds whether a variable is an array |
| is_bool($var) | Finds out whether a variable is a boolean |
| is_callable($var) | Verify that the contents of a variable can be called as a function |
| is_double($var) | Alias of is_float |
| is_float($var) | Finds whether the type of a variable is float |
| is_int($var) | Find whether the type of a variable is integer |
| is_integer($var) | Alias of is_int |
| is_long($var) | Alias of is_int |
| is_null($var) | Finds whether a variable is NULL |
| is_numeric($var) | Finds whether a variable is a number or a numeric string |
| is_object($var) | Finds whether a variable is an object |
| is_real($var) | Alias of is_float |
| is_resource($var) | Finds whether a variable is a resource |
| is_scalar($var) | Finds whether a variable is a scalar |
| is_string($var) | Find whether the type of a variable is string |
| isset($var) | Determine if a variable is set and is not NULL |
| print_r($var) | Prints human-readable information about a variable |
| serialize($var) | Generates a storable representation of a value |
| settype($var) | Set the type of a variable |
| strval($var) | Get string value of a variable |
| unserialize($var) | Creates a PHP value from a stored representation |
| unset($var) | Unset a given variable |
| var_dump($var) | Dumps information about a variable |
| var_export($var) | Outputs or returns a parsable string representation of a variable |