3v4l.org

run code in 300+ PHP versions simultaneously
<?php function func1() { $a = 5; return ++$a . $a++; } function func2() { $x = 5; $y = &$x; //Note that y IS NEVER USED return ++$x . $x++; } echo func1() . "\n"; echo func2() . "\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)
8.3.60.0070.01118.43
8.3.50.0130.00522.17
8.3.40.0040.01118.51
8.3.30.0140.00718.85
8.3.20.0000.00818.78
8.3.10.0000.00820.48
8.3.00.0100.00723.51
8.2.180.0160.00316.32
8.2.170.0000.01422.96
8.2.160.0110.00720.70
8.2.150.0110.00424.18
8.2.140.0080.00024.66
8.2.130.0060.00326.16
8.2.120.0050.00319.23
8.2.110.0030.00621.12
8.2.100.0110.00017.72
8.2.90.0070.00019.19
8.2.80.0090.00017.97
8.2.70.0080.00417.63
8.2.60.0000.00818.04
8.2.50.0040.00418.07
8.2.40.0040.00418.34
8.2.30.0040.00419.78
8.2.20.0040.00417.70
8.2.10.0000.00717.68
8.2.00.0040.00717.49
8.1.280.0150.00025.92
8.1.270.0050.00323.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00622.45
8.1.230.0110.00020.91
8.1.220.0000.00818.77
8.1.210.0080.00018.89
8.1.200.0100.00017.35
8.1.190.0050.00317.54
8.1.180.0040.00418.10
8.1.170.0060.00318.46
8.1.160.0050.00318.88
8.1.150.0050.00218.55
8.1.140.0020.00517.32
8.1.130.0000.00717.79
8.1.120.0000.00717.48
8.1.110.0000.00717.41
8.1.100.0030.00517.43
8.1.90.0050.00317.52
8.1.80.0000.00717.50
8.1.70.0070.00017.41
8.1.60.0100.00017.61
8.1.50.0000.00817.51
8.1.40.0060.00317.42
8.1.30.0040.00417.59
8.1.20.0000.00817.66
8.1.10.0040.00417.41
8.1.00.0000.00817.34
8.0.300.0000.00819.83
8.0.290.0050.00216.75
8.0.280.0030.00318.50
8.0.270.0030.00317.15
8.0.260.0000.00616.78
8.0.250.0000.00716.80
8.0.240.0040.00416.91
8.0.230.0030.00316.84
8.0.220.0000.00616.91
8.0.210.0040.00416.89
8.0.200.0000.00616.88
8.0.190.0000.00816.86
8.0.180.0000.00816.87
8.0.170.0030.00616.88
8.0.160.0070.00016.85
8.0.150.0000.00816.69
8.0.140.0090.00016.86
8.0.130.0030.00313.36
8.0.120.0050.00316.77
8.0.110.0000.00916.76
8.0.100.0040.00416.78
8.0.90.0050.00216.70
8.0.80.0040.01116.78
8.0.70.0040.00417.00
8.0.60.0030.00516.71
8.0.50.0040.00416.95
8.0.30.0110.00816.99
8.0.20.0130.00817.40
8.0.10.0040.00416.94
8.0.00.0090.00816.74
7.4.330.0050.00014.72
7.4.320.0000.00716.53
7.4.300.0030.00616.46
7.4.290.0040.00416.43
7.4.280.0000.00716.48
7.4.270.0000.00716.42
7.4.260.0030.00313.27
7.4.250.0030.00716.50
7.4.240.0000.00716.51
7.4.230.0030.00316.50
7.4.220.0110.00616.59
7.4.210.0040.01316.49
7.4.200.0030.00316.31
7.4.190.0040.00416.64
7.4.160.0160.00016.55
7.4.150.0130.00417.40
7.4.140.0060.01117.86
7.4.130.0090.01116.56
7.4.120.0120.00816.49
7.4.110.0100.00716.48
7.4.100.0030.01416.49
7.4.90.0120.00616.62
7.4.80.0100.00719.04
7.4.70.0120.00916.58
7.4.60.0100.00716.48
7.4.50.0090.00016.46
7.4.40.0060.00822.27
7.4.30.0190.00516.39
7.4.00.0110.00714.88
7.3.330.0020.00213.21
7.3.320.0000.00513.06
7.3.310.0030.00316.24
7.3.300.0000.00716.28
7.3.290.0070.00716.17
7.3.280.0050.01116.25
7.3.270.0060.01017.40
7.3.260.0130.00818.24
7.3.250.0100.00716.47
7.3.240.0090.00916.50
7.3.230.0100.00716.39
7.3.210.0110.01216.11
7.3.200.0090.00919.39
7.3.190.0080.01316.32
7.3.180.0080.00816.15
7.3.170.0130.00716.59
7.3.160.0120.00316.21
7.3.120.0060.00614.68
7.3.10.0230.00916.16
7.3.00.0590.00716.36
7.2.330.0070.01016.40
7.2.320.0060.01616.68
7.2.310.0140.00316.56
7.2.300.0130.00316.57
7.2.290.0030.01316.49
7.2.130.0760.00716.31
7.2.120.0330.00316.77
7.2.110.0200.00616.39
7.2.100.0200.00716.60
7.2.90.0100.01016.20
7.2.80.0110.00716.38
7.2.70.0100.00716.49
7.2.60.0060.01016.60
7.2.50.0060.01215.94
7.2.40.0080.00816.29
7.2.30.0060.00916.02
7.2.20.0070.01015.95
7.2.10.0110.00716.20
7.2.00.0060.00617.99
7.1.250.0330.00315.10
7.1.200.0060.00615.69
7.1.100.0090.00318.26
7.1.70.0030.01716.75
7.1.60.0080.00819.40
7.1.50.0000.01816.92
7.1.00.0030.04722.54
7.0.200.0040.00716.43
7.0.140.0000.07722.09
7.0.60.0070.08720.04
7.0.50.0070.05717.72
7.0.40.0100.04317.82
7.0.30.0000.04317.82
7.0.20.0000.04317.77
7.0.10.0070.04317.74
7.0.00.0070.03717.77
5.6.280.0000.08020.91
5.6.210.0070.08020.47
5.6.200.0030.05018.15
5.6.190.0070.05318.17
5.6.180.0000.05018.18
5.6.170.0070.03718.16
5.6.160.0030.04018.18
5.6.150.0070.03318.18
5.6.140.0000.04718.25
5.6.130.0000.04318.18
5.6.120.0000.04718.19
5.6.110.0030.04018.26
5.6.100.0070.04018.27
5.6.90.0030.04018.25
5.6.80.0100.05017.57
5.6.70.0030.03717.55
5.6.60.0030.03717.52
5.6.50.0030.03717.57
5.6.40.0030.03717.54
5.6.30.0000.04017.50
5.6.20.0030.03717.62
5.6.10.0030.04017.63
5.6.00.0000.04317.49
5.5.350.0270.05320.41
5.5.340.0100.08017.99
5.5.330.0070.05018.09
5.5.320.0030.04317.92
5.5.310.0000.05318.03
5.5.300.0070.03717.95
5.5.290.0070.03717.94
5.5.280.0030.05317.99
5.5.270.0030.04017.95
5.5.260.0070.03717.93
5.5.250.0000.04317.81
5.5.240.0000.04017.46
5.5.230.0030.03717.41
5.5.220.0030.03717.36
5.5.210.0000.04017.36
5.5.200.0000.04017.41
5.5.190.0070.05017.30
5.5.180.0030.04017.34
5.5.160.0130.02717.31
5.5.150.0070.05717.27
5.5.140.0100.07017.33
5.5.130.0070.07317.37
5.5.120.0070.04717.38
5.5.110.0030.08017.35
5.5.100.0070.07317.30
5.5.90.0030.07717.27
5.5.80.0070.04717.28
5.5.70.0030.07717.32
5.5.60.0030.08017.27
5.5.50.0000.04017.23
5.5.40.0070.03717.31
5.5.30.0030.04017.32
5.5.20.0030.04317.24
5.5.10.0030.04317.21
5.5.00.0070.04317.19
5.4.450.0030.03719.43
5.4.440.0030.03719.34
5.4.430.0030.04319.33
5.4.420.0100.03019.28
5.4.410.0070.03319.15
5.4.400.0030.03719.13
5.4.390.0070.03319.02
5.4.380.0030.03719.27
5.4.370.0100.03019.10
5.4.360.0000.04319.04
5.4.350.0000.04019.09
5.4.340.0000.04018.95
5.4.320.0000.06019.11
5.4.310.0030.08019.05
5.4.300.0130.04719.03
5.4.290.0170.06319.14
5.4.280.0030.05019.04
5.4.270.0000.04319.13
5.4.260.0030.08019.00
5.4.250.0100.05019.15
5.4.240.0130.06719.04
5.4.230.0130.07019.09
5.4.220.0030.05019.03
5.4.210.0030.03719.13
5.4.200.0030.06019.13
5.4.190.0100.05319.26
5.4.180.0130.05719.13
5.4.170.0130.07719.21
5.4.160.0100.07719.04
5.4.150.0100.07319.08
5.4.140.0030.03716.38
5.4.130.0100.07316.43
5.4.120.0130.07016.59
5.4.110.0070.06716.50
5.4.100.0000.07716.48
5.4.90.0030.04016.41
5.4.80.0070.03316.48
5.4.70.0030.07716.42
5.4.60.0130.06716.45
5.4.50.0070.04316.38
5.4.40.0070.03316.46
5.4.30.0030.03716.27
5.4.20.0070.03316.40
5.4.10.0070.05016.26
5.4.00.0130.05715.82
5.3.290.0030.04714.72
5.3.280.0100.03714.60
5.3.270.0030.04314.61
5.3.260.0070.07014.60
5.3.250.0070.07314.66
5.3.240.0030.03714.61
5.3.230.0030.04014.45
5.3.220.0000.07014.56
5.3.210.0070.07314.78
5.3.200.0030.07014.57
5.3.190.0070.03714.61
5.3.180.0070.06014.51
5.3.170.0100.07314.58
5.3.160.0170.06314.78
5.3.150.0070.05014.60
5.3.140.0000.04014.60
5.3.130.0000.04714.39
5.3.120.0100.03314.55
5.3.110.0100.03314.55
5.3.100.0030.06014.07
5.3.90.0130.06714.07
5.3.80.0070.07014.06
5.3.70.0000.06714.08
5.3.60.0030.06314.05
5.3.50.0070.05314.02
5.3.40.0070.07014.05
5.3.30.0070.07713.98
5.3.20.0070.05013.59
5.3.10.0030.06313.70
5.3.00.0000.05013.67
5.2.170.0070.03311.15
5.2.160.0070.05711.18
5.2.150.0030.06311.19
5.2.140.0070.06011.14
5.2.130.0030.05311.18
5.2.120.0000.03711.00
5.2.110.0100.03711.01
5.2.100.0030.05011.14
5.2.90.0070.04711.07
5.2.80.0030.06011.14
5.2.70.0030.06311.31
5.2.60.0100.05711.06
5.2.50.0070.06011.23
5.2.40.0030.06011.04
5.2.30.0070.03311.02
5.2.20.0030.06311.16
5.2.10.0030.05310.89
5.2.00.0100.04310.75
5.1.60.0070.04710.39
5.1.50.0100.04710.39
5.1.40.0030.04010.39
5.1.30.0100.05310.39
5.1.20.0100.04710.39
5.1.10.0030.05310.39
5.1.00.0030.05010.39
5.0.50.0000.02710.39
5.0.40.0000.02710.39
5.0.30.0000.06010.39
5.0.20.0000.03010.39
5.0.10.0000.04310.39
5.0.00.0030.04010.39
4.4.90.0000.04010.39
4.4.80.0030.03310.39
4.4.70.0030.02310.39
4.4.60.0030.03310.39
4.4.50.0000.01710.39
4.4.40.0000.04710.39
4.4.30.0030.03710.39
4.4.20.0000.03310.39
4.4.10.0000.03010.39
4.4.00.0000.03310.39
4.3.110.0070.01710.39
4.3.100.0030.02710.39
4.3.90.0030.01710.39
4.3.80.0070.03310.39
4.3.70.0000.01710.39
4.3.60.0100.02710.39
4.3.50.0000.01710.39
4.3.40.0000.02710.39
4.3.30.0000.03310.39
4.3.20.0000.02710.39
4.3.10.0030.02010.39
4.3.00.0000.01710.39

preferences:
76.69 ms | 401 KiB | 5 Q