What does (int) $_GET['page'] mean in PHP?

Question

I tried looking up (int) but could only find documentation for the function int() in the PHP manual.

Could someone explain to me what the above

Answer 1

(int) converts a value to an integer.

<?php
$test = "1";
echo gettype((int)$test);
?>

$ php test.php
integer

Answer 2

It convert (tries at least) whatever the value of the variable is to a integer. If there are any letter etc, in front it will convert to a 0.

<?php

$var = '1a';

echo $var;               // 1a
echo (int) $var;     //1

$var2 = 'a2';
echo $var2;           //a2
echo (int) $var2;     // 0

?>

Answer 3

In PHP, (int) will cast the value following it to an int.

Example:

php > var_dump((int) "5");
int(5)

I believe the syntax was borrowed from C.

Answer 4

You can find it in the manual in the section type juggling: type casting. (int) casts a value to int and is a language construct, which is the reason that it looks "funny".

Answer 5

Simple example will make you understand:

var_dump((int)8);
var_dump((int)"8");
var_dump((int)"6a6");

var_dump((int)"a6");

var_dump((int)8.9);
var_dump((int)"8.9");
var_dump((int)"6.4a6");

Result:

int(8)
int(8)
int(6)

int(0)

int(8)
int(8)
int(6)

Answer 6

(int) is same as int()

see http://php.net/manual/en/language.types.integer.php