Online PHP editor | perf for a4EI0

<?php // This stands in for stdClass for this demo, because class_alias doesn't work with built-in classes class myStdClass{} class UserDefinedClass{} class_alias('myStdClass', 'DynamicObject'); $ud_obj = new UserDefinedClass(); $do_obj = new DynamicObject(); $sc_obj = new myStdClass(); echo "===[get_class()]===\n"; printf( "UserDefinedClass Object Class: %s\n", get_class($ud_obj)); printf( "DynamicObject Object Class: %s\n", get_class($do_obj)); printf( "myStdClass Object Class: %s\n", get_class($sc_obj)); echo "\n===[gettype()]===\n"; printf( "UserDefinedClass Object Type: %s\n", gettype($ud_obj)); printf( "DynamicObject Object Type: %s\n", gettype($do_obj)); printf( "myStdClass Object Type: %s\n", gettype($sc_obj)); echo "\n===[is_a(stdClass::class)]===\n"; printf( "UserDefinedClass Object Type: %s\n", is_a($ud_obj,stdClass::class)); printf( "DynamicObject Object Type: %s\n", is_a($do_obj,stdClass::class)); printf( "myStdClass Object Type: %s\n", is_a($sc_obj,stdClass::class)); echo "\n===[instanceof stdClass]===\n"; printf( "UserDefinedClass Object Type: %s\n", $ud_obj instanceof stdClass); printf( "DynamicObject Object Type: %s\n", $do_obj instanceof stdClass); printf( "myStdClass Object Type: %s\n", $sc_obj instanceof stdClass); echo "\n===[is_a(DynamicObject::class)]===\n"; printf( "UserDefinedClass Object Type: %s\n", is_a($ud_obj,DynamicObject::class)); printf( "DynamicObject Object Type: %s\n", is_a($do_obj,DynamicObject::class)); printf( "myStdClass Object Type: %s\n", is_a($sc_obj,DynamicObject::class)); echo "\n===[instanceof DynamicObject]===\n"; printf( "UserDefinedClass Object Type: %s\n", $ud_obj instanceof DynamicObject); printf( "DynamicObject Object Type: %s\n", $do_obj instanceof DynamicObject); printf( "myStdClass Object Type: %s\n", $sc_obj instanceof DynamicObject); echo "\n===[is_subclass_of(stdClass::class)]===\n"; printf( "UserDefinedClass Object Type: %s\n", is_subclass_of($ud_obj,stdClass::class)); printf( "DynamicObject Object Type: %s\n", is_subclass_of($do_obj,stdClass::class)); printf( "myStdClass Object Type: %s\n", is_subclass_of($sc_obj,stdClass::class));

Version	System time (s)	User time (s)	Memory (MiB)
8.3.6	0.015	0.004	18.30
8.3.5	0.004	0.011	18.26
8.3.4	0.003	0.010	21.86
8.3.3	0.004	0.011	18.54
8.3.2	0.008	0.000	24.18
8.3.1	0.008	0.000	24.66
8.3.0	0.004	0.004	26.16
8.2.18	0.006	0.010	25.92
8.2.17	0.012	0.009	18.97
8.2.16	0.015	0.003	22.96
8.2.15	0.008	0.000	25.66
8.2.14	0.004	0.004	24.66
8.2.13	0.004	0.004	26.16
8.2.12	0.008	0.000	21.04
8.2.11	0.006	0.003	20.53
8.2.10	0.006	0.003	20.53
8.1.28	0.011	0.007	25.92
8.1.27	0.004	0.004	23.99
8.1.26	0.004	0.004	26.35
8.1.25	0.000	0.008	28.09
8.1.24	0.007	0.003	18.51
8.1.23	0.004	0.007	22.01
8.0.10	0.006	0.002	16.96