is_object in PHP

is_object — Finds whether a variable is an object


Syntax: 
bool is_object ( mixed $var )

Finds whether the given variable is an object.
Parameters: 

var

    The variable being evaluated.

Return Values:

Returns TRUE if var is an object, FALSE otherwise.
Examples:

Example #1 is_object() example
<?php
// Declare a simple function to return an 
// array from our object
function get_students($obj)
{
    if (!is_object($obj)) {
        return false;
    }

    return $obj->students;
}

// Declare a new class instance and fill up 
// some values
$obj = new stdClass();
$obj->students = array('Kalle', 'Ross', 'Felipe');

var_dump(get_students(null));
var_dump(get_students($obj));
?>
Notes:

    Note:

    This function will return FALSE if used on an unserialized object where the class definition is not present (even though gettype() returns object).