PHP gettype() function

Author：Eve Cole Update Time：2024-12-28 13:36:01

The gettype() function is used to get the type of a variable.

Note : Do not use gettype() to test a type, as the string it returns may need to change in future versions. In addition, it runs slower due to the inclusion of string comparisons. Use is_* functions instead.

Version requirements: PHP 4, PHP 5, PHP 7

grammar

 string gettype (mixed $var)

Parameter description:

$var: variable.

return value

Returns a string. Possible values are:

boolean

integer

double

string

array

object

resource

NULL

unknown type

Example

<?php echo gettype ( 102 ) . PHP_EOL ; echo gettype ( true ) . PHP_EOL ; echo gettype ( ' ' ) .PHP_EOL ; echo gettype ( null ) .PHP_EOL ; echo gettype ( array ( ) ) . PHP_EOL ; echo gettype ( new stdclass ( ) ) ; ?>

The output is:

 integerbooleanstringNULLarrayobject