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<?php $array = []; $st = microtime(TRUE); for($i = 0; $i < 10000000; $i++){ $result = $array["search"] ?? NULL; } echo number_format(microtime(TRUE) - $st, 10) . "\n"; $st = microtime(TRUE); for($i = 0; $i < 10000000; $i++){ if(isset($array["search"])){ $result = $array["search"]; }else{ $result = NULL; } } echo number_format(microtime(TRUE) - $st, 10) . "\n";
Output for 7.3.1
0.2500159740 0.2106919289
Output for 7.3.0
0.2324550152 0.1817848682
Output for 7.2.13
0.2460780144 0.1915369034
Output for 7.2.12
0.2486908436 0.2043540478
Output for 7.2.11
0.2354071140 0.1692020893
Output for 7.2.10
0.2510890961 0.2079038620
Output for 7.2.9
0.2513911724 0.1978681087
Output for 7.2.8
0.2239367962 0.1736979485
Output for 7.2.7
0.2366881371 0.1840229034
Output for 7.2.6
0.2466981411 0.1819667816
Output for 7.2.5
0.2310090065 0.1776070595
Output for 7.2.4
0.2343900204 0.1766669750
Output for 7.2.3
0.2354009151 0.1841630936
Output for 7.2.2
0.2334430218 0.1741571426
Output for 7.2.1
0.2508590221 0.1851971149
Output for 7.2.0
0.2792780399 0.1788921356
Output for 7.1.25
0.7871081829 0.5136859417
Output for 7.1.23
0.2785091400 0.2049319744
Output for 7.1.22
0.3590769768 0.3228938580
Output for 7.1.21
0.3971018791 0.2224018574
Output for 7.1.20
0.2578949928 0.2438800335
Output for 7.1.19
0.4101040363 0.3166730404
Output for 7.1.18
0.3544149399 0.2605390549
Output for 7.1.17
0.3058879375 0.2682919502
Output for 7.1.16
0.3974130154 0.2311470509
Output for 7.1.15
0.3790299892 0.2301650047
Output for 7.1.14
0.3139040470 0.2131140232
Output for 7.1.13
0.3302471638 0.2467479706
Output for 7.1.12
0.3188159466 0.1945450306
Output for 7.1.11
0.2806479931 0.1876518726
Output for 7.1.10
0.3402888775 0.1964399815
Output for 7.1.9
0.2958140373 0.2216250896
Output for 7.1.8
0.2862699032 0.2243170738
Output for 7.1.7
0.2896249294 0.1808261871
Output for 7.1.6
0.3062031269 0.1995649338
Output for 7.1.5
0.3123228550 0.1837511063
Output for 7.1.4
0.3089427948 0.2086489201
Output for 7.1.3
0.2603878975 0.2663788795
Output for 7.1.2
0.2964558601 0.2273571491
Output for 7.1.1
0.3030149937 0.2047820091
Output for 7.1.0
0.4313020706 0.2930450439
Output for 5.6.38
Parse error: syntax error, unexpected '?' in /in/24a90 on line 7
Process exited with code 255.
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48.33 ms | 649 KiB | 4 Q