In this tutorial, you shall learn how to get the type of a given variable in PHP using gettype() function, with example programs.
PHP – Get Type of Variable
To get the type of a variable in PHP, call gettype() function and pass the variable as argument.
gettype() inbuilt function takes value, expression, or a variable as an argument, and returns a string specifying the type of given argument.
Examples
1. Get the type of variable x
In the following example, we initialize a variable $x with integer value, and get the type of $x programmatically using gettype() function.
PHP Program
<?php
$x = 25;
echo gettype($x);
?>Output
2. Get the type of a string literal
In the following example, we get the type of the value 'hello world' programmatically using gettype() function.
PHP Program
<?php
echo gettype('hello world');
?>Output
2. Get the type of an expression
In the following example, we get the type of the expression '$x + $y' where $x is an integer, and $y is a double. Of course, the expression has to evaluate to a value, and we are using gettype() function to get the type of that resulting value of the expression.
PHP Program
<?php
$x = 4;
$y = 2.47;
echo gettype($x + $y);
?>Output
Conclusion
In this PHP Tutorial, we learned how to get the type of a variable, a value, or an expression, using gettype() function, with examples.