is_object

Example 1396. Test whether a single value is an object

// Define a class to use in testing
class test {}

// Instantiate the class
$test = new test ();

is_object ($test)
    or die ('Variable $test is not a class');

Example 1397. Test whether a few different values are objects

<pre>
<?php
// Define an empty class to use in testing
class test {}

$test = new test ();

// Make a list of values to test
$values = array (
    'new test ()' => new test (),
    'TRUE' => TRUE,
    "'Hello'" => 'Hello',
    'dir ()' => dir()   // Test a built-in class to see whether it returns an object
);

// Loop through the values and test whether they are objects
foreach ($values as $key => $value) {
    $is_object = is_object ($value) ? 'Yes' : 'No';

    printf ("<b>%'.-45s</b>%'.3s\n", $key, $is_object);
}
?>
</pre>