Online PHP editor | perf for 0sU7o

<?php class a{ function __construct(){ echo 'class a __construct'."\n"; } function a1(){ echo 'a1'."\n"; } function a2(){ echo 'a2'."\n"; } function a3(){ echo 'a3'."\n"; } } class b{ protected $cache; function __construct(){ echo 'class b __construct'."\n"; } function b1($tags='tags'){ return new a(); } function b2($tags='tags'){ static $cache=[]; if(isset($cache[$tags])) return $cache[$tags]; return $cache[$tags]=new a(); } function b3($tags='tags'){ if(isset($this->cache[$tags])) return $this->cache[$tags]; return $this->cache[$tags]=new a(); } } /*内存计算*/ $start = memory_get_usage(); $b=new b(); $b->b1()->a1(); $b->b1()->a2(); $b->b1()->a3(); /*内存计算*/ $end = memory_get_usage(); echo '内存'.($end-$start)."\n"; /*内存计算*/ $start = memory_get_usage(); $b=new b(); $b->b2()->a1(); $b->b2()->a2(); $b->b2()->a3(); /*内存计算*/ $end = memory_get_usage(); echo '内存'.($end-$start)."\n"; /*内存计算*/ $start = memory_get_usage(); $b=new b(); $b->b3()->a1(); $b->b3()->a2(); $b->b3()->a3(); /*内存计算*/ $end = memory_get_usage(); echo '内存'.($end-$start)."\n";

Version	System time (s)	User time (s)	Memory (MiB)
7.3.4	0.006	0.006	14.85
7.3.3	0.013	0.000	14.66
7.3.2	0.010	0.003	16.51
7.3.1	0.005	0.008	16.34
7.3.0	0.003	0.015	16.62
7.2.17	0.006	0.009	14.91
7.2.16	0.007	0.007	15.21
7.2.15	0.011	0.004	17.04
7.2.14	0.008	0.004	16.70
7.2.13	0.006	0.006	17.02
7.2.12	0.011	0.000	16.92
7.2.11	0.005	0.006	17.09
7.2.10	0.011	0.011	17.05
7.2.9	0.008	0.004	16.72
7.2.8	0.011	0.000	16.95
7.2.7	0.003	0.009	17.06
7.2.6	0.006	0.006	16.87
7.2.5	0.003	0.010	16.92
7.2.4	0.013	0.010	16.85
7.2.3	0.008	0.005	17.02
7.2.2	0.004	0.007	16.92
7.2.1	0.006	0.015	16.91
7.2.0	0.003	0.009	16.68
7.1.28	0.005	0.008	15.95
7.1.27	0.007	0.006	15.50
7.1.26	0.007	0.003	15.53
7.1.25	0.010	0.003	15.98