PHP | settype() Function

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The settype() function is a built-in function in PHP. The settype() function is used to the set the type of a variable. It is used to set type or modify type of an existing variable.

Syntax:

boolean settype($variable_name, $type)

Parameters: The settype() function accepts two parameters as shown in above syntax and are described below.

$variable_name: This parameter specifies the name of variable
whose type we want to modify. This parameter can be of any type that is, it can be of integer type or a string type etc.
$type: This parameter specifies the type of variable that is needed. Possible values of this parameter are: boolean, integer, float, string, array, object, null.

Return value: This function returns a boolean type value. It returns TRUE in case of success and FALSE in case of failure.

Below programs illustrate the settype() function in PHP:

Program 1:

<?php 
  
// PHP program to illustrate settype() function 
  
$var1 = "123xyz"; 
$var2 = 3; 
$r = true; 
settype($var1, "integer"); 
settype($var2, "float"); 
settype($r, "string"); 
echo $var1."\n"; 
echo $var2."\n"; 
echo $r."\n"; 
  
?> 

Output:

123
3
1

Program 2:

<?php 
  
// PHP program to illustrate settype() function 
  
$var1 = "a12b"; 
$var2 = 3.566; 
$r = true; 
settype($var1, "integer"); 
settype($var2, "integer"); 
settype($r, "string"); 
echo $var1."\n"; 
echo $var2."\n"; 
echo $r."\n"; 
  
?> 