3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test1() { $s = microtime(true); $var = null; for ($i = 0; $i < 1000000; $i++) { $condition = $var === null; } return microtime(true) - $s; } function test2() { $s = microtime(true); $var = null; for ($i = 0; $i < 1000000; $i++) { $condition = !isset($var); } return microtime(true) - $s; } echo test1() . "\n\n"; echo test2() . "\n\n";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
7.4.00.0000.05015.16
7.3.120.0160.05214.61
7.3.110.0030.05915.13
7.3.100.0100.03614.81
7.3.90.0030.05014.66
7.3.80.0060.03514.91
7.3.70.0070.04014.64
7.3.60.0130.03114.94
7.3.50.0000.05014.81
7.3.40.0030.04314.84
7.3.30.0060.05514.43
7.3.20.0000.04316.81
7.3.10.0110.03516.41
7.3.00.0070.03716.61
7.2.250.0070.04315.00
7.2.240.0100.05715.10
7.2.230.0000.05615.21
7.2.220.0000.05115.19
7.2.210.0030.04215.26
7.2.200.0030.04414.78
7.2.190.0060.04215.05
7.2.180.0000.05015.05
7.2.170.0030.04115.13
7.2.00.0030.04119.13
7.1.330.0070.12315.96
7.1.320.0100.10615.71
7.1.310.0100.10515.71
7.1.300.0000.12315.85
7.1.290.0100.10615.66
7.1.280.0030.11715.89
7.1.270.0100.11515.88
7.1.260.0070.11215.57
7.1.70.0100.03117.18
7.1.60.0100.07719.46
7.1.50.0030.05016.56
7.1.00.0030.12722.31
7.0.200.0070.03316.88
7.0.140.0000.12322.09
7.0.60.0100.13319.97
7.0.50.0100.06317.74
7.0.40.0000.12020.10
7.0.30.0200.07020.30
7.0.20.0430.11020.08
7.0.10.0100.11020.23
7.0.00.0000.07320.32
5.6.280.0070.24320.90
5.6.210.0100.16020.60
5.6.200.0030.17718.29
5.6.190.0030.11720.64
5.6.180.4170.10720.45
5.6.170.0130.12020.43
5.6.160.0130.16020.44
5.6.150.0070.20318.25
5.6.140.0070.13318.21
5.6.130.0070.14018.13
5.6.120.0130.10320.94
5.6.110.0200.17021.05
5.6.100.0030.10721.13
5.6.90.0100.16720.97
5.6.80.0030.17320.36
5.5.350.0330.15320.39
5.5.340.0070.13718.02
5.5.330.0000.12020.57
5.5.320.0200.10720.27
5.5.310.0330.14320.23
5.5.300.0030.10317.99
5.5.290.0070.16718.06
5.5.280.0000.11720.88
5.5.270.0000.13020.75
5.5.260.0000.18320.88
5.5.250.0030.15020.59
5.5.240.0100.09020.27
5.4.450.0870.12319.25
5.4.440.0970.11019.20
5.4.430.0670.09019.32
5.4.420.0670.11019.18
5.4.410.0770.12319.44
5.4.400.0230.10319.08
5.4.390.0700.08719.22
5.4.380.0370.15018.61
5.4.370.0470.15318.61
5.4.360.0300.15018.56
5.4.350.0570.15318.56
5.4.340.0300.15018.55
5.4.320.0100.10612.51
5.4.310.0060.10812.50
5.4.300.0030.10912.50
5.4.290.0080.11612.50
5.4.280.0120.15912.38
5.4.270.0120.11412.38
5.4.260.0090.16212.38
5.4.250.0080.14112.38
5.4.240.0090.12812.38
5.4.230.0070.14912.37
5.4.220.0100.17412.36
5.4.210.0120.11712.36
5.4.200.0160.12612.37
5.4.190.0090.14912.36
5.4.180.0070.14112.36
5.4.170.0100.15512.37
5.4.160.0190.21412.36
5.4.150.0090.17412.37
5.4.140.0110.14212.05
5.4.130.0120.11312.04
5.4.120.0110.17112.00
5.4.110.0110.25411.99
5.4.100.0120.17911.98
5.4.90.0080.11811.99
5.4.80.0100.11911.98
5.4.70.0080.15311.98
5.4.60.0120.14911.98
5.4.50.0120.15111.98
5.4.40.0130.20211.98
5.4.30.0120.18011.97
5.4.20.0110.17711.97
5.4.10.0230.22711.97
5.4.00.0120.18811.46
5.3.290.0070.16912.80
5.3.280.0130.20812.71
5.3.270.0080.15712.72
5.3.260.0120.21612.72
5.3.250.0190.27412.72
5.3.240.0140.23512.72
5.3.230.0170.20712.71
5.3.220.0190.21512.68
5.3.210.0090.14612.68
5.3.200.0080.13612.68
5.3.190.0100.14512.68
5.3.180.0070.13612.68
5.3.170.0070.15212.67
5.3.160.0090.17012.67
5.3.150.0120.18012.67
5.3.140.0070.14512.66
5.3.130.0100.14912.66
5.3.120.0090.16112.66
5.3.110.0120.15812.66
5.3.100.0070.20612.12
5.3.90.0080.16212.09
5.3.80.0080.19112.07
5.3.70.0080.14912.08
5.3.60.0110.19612.06
5.3.50.0080.17812.01
5.3.40.0080.19712.01
5.3.30.0100.17011.97
5.3.20.0080.15011.75
5.3.10.0060.15711.71
5.3.00.0080.15811.70
5.2.170.0060.2049.20
5.2.160.0080.1919.20
5.2.150.0060.2689.20
5.2.140.0080.2869.20
5.2.130.0060.2439.16
5.2.120.0060.1909.15
5.2.110.0070.1839.16
5.2.100.0090.2499.16
5.2.90.0110.2659.16
5.2.80.0080.3089.16
5.2.70.0080.3079.15
5.2.60.0100.2599.11
5.2.50.0090.3359.08
5.2.40.0110.2999.05
5.2.30.0090.2559.03
5.2.20.0090.2659.01
5.2.10.0080.2488.95
5.2.00.0160.2968.82
5.1.60.0060.3358.09
5.1.50.0100.2658.10
5.1.40.0130.3308.07
5.1.30.0100.3478.42
5.1.20.0090.2738.45
5.1.10.0090.3348.18
5.1.00.0130.3248.17
5.0.50.0140.8716.65
5.0.40.0140.8096.51
5.0.30.0060.6626.32
5.0.20.0080.6216.29
5.0.10.0060.6906.27
5.0.00.0130.8496.26
4.4.90.0050.8334.78
4.4.80.0100.7544.75
4.4.70.0090.7994.75
4.4.60.0140.6934.75
4.4.50.0030.6414.77
4.4.40.0090.8524.71
4.4.30.0090.8654.76
4.4.20.0110.7734.84
4.4.10.0050.6924.85
4.4.00.0130.5174.76
4.3.110.0070.5894.67
4.3.100.0050.4954.66
4.3.90.0040.5504.64
4.3.80.0090.6944.58
4.3.70.0040.6784.63
4.3.60.0080.6654.63
4.3.50.0070.5984.63
4.3.40.0070.8314.54
4.3.30.0090.8163.33
4.3.20.0090.7363.31
4.3.10.0040.5643.28
4.3.00.0030.26013.47

preferences:
47.49 ms | 401 KiB | 5 Q