Online PHP editor | refs for QZvO5

<?php class MyClass { public $prop; } $foo = new MyClass(); $foo->prop = 'test1'; $bar = $foo; $bam = new MyClass(); $bam->prop = 'test2'; $t = new MyClass(); $t->prop = 'test1'; $test = array($foo, $bar, $bam, $t); function filter_them( $obj ) { static $new_arr; if ( ! in_array( $obj->prop, $new_arr ) ){ $new_arr[] = $obj->prop; return true; } } print_r(array_filter($test, 'filter_them'));