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<?php $i=10000; $as=[]; $time_a=microtime(true); for($z=0;$z<$i;$z++){ $as[] = [0,1,2,3,4,5,6,7,8,9]; } $a = array_merge(...$as); $time_a=microtime(true)-$time_a; print($time_a.' sec');
Output for 8.2.4
0.0010550022125244 sec
Output for 8.2.3
0.0010640621185303 sec
Output for 8.2.2
0.00084400177001953 sec
Output for 8.2.1
0.0010650157928467 sec
Output for 8.2.0
0.001054048538208 sec
Output for 8.1.17
0.0018260478973389 sec
Output for 8.1.16
0.0018301010131836 sec
Output for 8.1.15
0.0017631053924561 sec
Output for 8.1.14
0.0019059181213379 sec
Output for 8.1.13
0.0025069713592529 sec
Output for 8.1.12
0.0021259784698486 sec
Output for 8.1.11
0.0019121170043945 sec
Output for 8.1.10
0.0020999908447266 sec
Output for 8.1.9
0.0017890930175781 sec
Output for 8.1.8
0.0017549991607666 sec
Output for 8.1.7
0.0017790794372559 sec
Output for 8.1.6
0.002007007598877 sec
Output for 8.1.0, 8.1.5
0.0017750263214111 sec
Output for 8.1.4
0.001723051071167 sec
Output for 8.1.3
0.0020110607147217 sec
Output for 8.1.2
0.0018119812011719 sec
Output for 8.1.1
0.0017390251159668 sec
Output for 8.0.28
0.0042722225189209 sec
Output for 8.0.27
0.0027480125427246 sec
Output for 8.0.26
0.0033280849456787 sec
Output for 8.0.25
0.0035958290100098 sec
Output for 8.0.24
0.0035378932952881 sec
Output for 8.0.23
0.0023849010467529 sec
Output for 8.0.22
0.0030310153961182 sec
Output for 8.0.21
0.0029749870300293 sec
Output for 8.0.20
0.0024640560150146 sec
Output for 8.0.19
0.0027899742126465 sec
Output for 8.0.18
0.0029170513153076 sec
Output for 8.0.17
0.0027310848236084 sec
Output for 8.0.16
0.0030791759490967 sec
Output for 8.0.15
0.0027730464935303 sec
Output for 8.0.14
0.0021579265594482 sec
Output for 8.0.13
0.0027639865875244 sec
Output for 8.0.12
0.0022530555725098 sec
Output for 8.0.11
0.0028657913208008 sec
Output for 8.0.10
0.0024199485778809 sec
Output for 8.0.9
0.0027470588684082 sec
Output for 8.0.8
0.00248122215271 sec
Output for 8.0.7
0.0027041435241699 sec
Output for 8.0.6
0.0029029846191406 sec
Output for 8.0.5
0.0032539367675781 sec
Output for 8.0.3
0.0033831596374512 sec
Output for 8.0.2
0.002830982208252 sec
Output for 8.0.1
0.0018389225006104 sec

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64.98 ms | 401 KiB | 55 Q