PHP | gettype() Function

The gettype() function is an inbuilt function in PHP which is used to get the type of a variable. It is used to check the type of existing variable.

Syntax:

string gettype ( $var )

Parameter: This function accepts a single parameter $var. It is the name of variable which is needed to be checked for type of variable.

Return Value: This function returns a string type value. Possible values for the returned string are:

boolean
integer
double (for historical reasons “double” is returned in case of float)
string
array
object
resource
NULL
unknown type

Below programs illustrate the gettype() function in PHP:

Program 1:

<?php 
// PHP program to illustrate gettype() function 

$var1 = true; // boolean value  

$var2 = 3; // integer value 

$var3 = 5.6; // double value 

$var4 = "Abc3462"; // string value 

$var5 = array(1, 2, 3); // array value 

$var6 = new stdClass; // object value 

$var7 = NULL; // null value 

$var8 = tmpfile(); // resource value 

echo gettype($var1)."\n"; 

echo gettype($var2)."\n"; 

echo gettype($var3)."\n"; 

echo gettype($var4)."\n"; 

echo gettype($var5)."\n"; 

echo gettype($var6)."\n"; 

echo gettype($var7)."\n"; 

echo gettype($var8)."\n"; 

?>

Output:

boolean
integer
double
string
array
object
NULL
resource

Program 2:

<?php 

// PHP program to illustrate gettype() function 

$var1 = "GfG";  

$var2 = 10 % 7; 

$var3 = pow(10, 2); 

$var4 = pow(10, 0.5); 

$var5 = sqrt(9); 

echo gettype($var1)."\n"; 

echo gettype($var2)."\n"; 

echo gettype($var3)."\n"; 

echo gettype($var4)."\n"; 

echo gettype($var5); 
?>

Output:

string
integer
integer
double
double

Reference: http://php.net/manual/en/function.gettype.php

PHP is a server-side scripting language designed specifically for web development. You can learn PHP from the ground up by following this PHP Tutorial and PHP Examples.

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