The gettype Function
The gettype function returns a string indicating the type of the passed variable.
It accepts one parameter - the variable whose type needs to be determined.
Syntax
gettype(mixed $var): string
Return Values
| Type | Description |
|---|---|
'boolean' |
Boolean values |
'integer' |
Integers |
'double' |
Floating point numbers |
'string' |
Strings |
'array' |
Arrays |
'object' |
Objects |
'resource' |
Resources |
'NULL' |
Null values |
'unknown type' |
Unknown types |
Example
Determining the type of an integer:
<?php
echo gettype(123);
?>
Code execution result:
'integer'
Example
Determining the type of a floating point number:
<?php
echo gettype(3.14);
?>
Code execution result:
'double'
Example
Determining the type of a string:
<?php
echo gettype('hello');
?>
Code execution result:
'string'
Example
Determining the type of a boolean value:
<?php
echo gettype(true);
?>
Code execution result:
'boolean'
Example
Determining the type of an array:
<?php
echo gettype(['a', 'b', 'c']);
?>
Code execution result:
'array'
Example
Determining the type of NULL:
<?php
echo gettype(null);
?>
Code execution result:
'NULL'
Example
Let's check the variable type after conversions:
<?php
$var = '123';
echo gettype($var) . "\n";
$var = (int)$var;
echo gettype($var) . "\n";
$var = (float)$var;
echo gettype($var) . "\n";
?>
Code execution result:
'string'
'integer'
'double'
