Online PHP editor | perf for IUtdA

<?php class Coalescing { protected $attributes = [ 'attribute1' => 'value1', ]; public function __isset() { return array_key_exists($name, $this->attributes); } public function __get($name) { print "GET\n"; if (array_key_exists($name, $this->attributes)) { return $this->attributes[$name]; } trigger_error("Property $name does not exist"); return null; } } $coal = new Coalescing(); var_dump($coal->attribute1 ?? 'default'); //GET //string(6) "value1" var_dump($coal->attribute2 ?? 'default'); //GET // It should dump 'default' here. Instead, the error of __get() is triggered

Version	System time (s)	User time (s)	Memory (MiB)
7.2.0	0.012	0.008	17.39
7.1.12	0.011	0.008	16.77
7.1.11	0.057	0.009	16.01
7.1.10	0.012	0.006	16.08
7.1.9	0.017	0.003	16.26
7.1.8	0.009	0.009	15.98
7.1.7	0.012	0.006	15.22
7.1.6	0.024	0.009	32.92
7.1.5	0.027	0.006	32.79
7.1.4	0.020	0.014	32.57
7.1.3	0.027	0.010	32.48
7.1.2	0.023	0.024	32.48
7.1.1	0.012	0.008	14.24
7.1.0	0.017	0.006	14.50

Version

System time (s)

User time (s)

Memory (MiB)

7.2.0

0.012

0.008

17.39

7.1.12

0.011

0.008

16.77

7.1.11

0.057

0.009

16.01

7.1.10

0.012

0.006

16.08

7.1.9

0.017

0.003

16.26

7.1.8

0.009

15.98

7.1.7

0.012

0.006

15.22

7.1.6

0.024

0.009

32.92

7.1.5

0.027

0.006

32.79

7.1.4

0.020

0.014

32.57

7.1.3

0.027

0.010

32.48

7.1.2

0.023

0.024

32.48

7.1.1

0.012

0.008

14.24

7.1.0

0.017

0.006

14.50