Get the type of a variable
Syntax
gettype ( mixed $var ) : string
Parameters
varThe variable being type checked.
Return
Possible values for the returned string are:
"boolean"
"integer"
"double" (for historical reasons "double" is returned in case of a float, and not simply "float")
"string"
"array"
"object"
"resource"
"resource (closed)"
"NULL"
Examples
1
<? $var = 0; $return = gettype($var); echo $return; ?>
integer
2
<?
$array = array(true, 0, 12.34, "abc", array(1, 2, 3), new stdclass, null);
foreach ($array as $value) {
$return = gettype($value);
echo $return . PHP_EOL;
}
?>boolean integer double string array object NULL
3
<?
$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/file.txt';
$mode = 'r';
$handle = fopen($filename, $mode);
$return = gettype($handle);
echo $return;
fclose($handle);
?>resource
4
<?
$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/file.txt';
$mode = 'r';
$handle = fopen($filename, $mode);
fclose($handle);
$return = gettype($handle);
echo $return;
?>resource (closed)
