3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); function start() { return $_SESSION['a'] = 1+1; } echo start(); echo $_SESSION['a'];

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)
8.3.40.0090.00618.67
8.3.30.0060.00918.79
8.3.20.0000.00818.73
8.3.10.0060.00318.76
8.3.00.0080.00019.50
8.2.170.0040.01622.96
8.2.160.0070.01418.74
8.2.150.0050.00324.18
8.2.140.0050.00324.66
8.2.130.0070.00026.16
8.2.120.0050.00321.07
8.2.110.0120.00021.06
8.2.100.0000.01218.03
8.2.90.0100.00019.20
8.2.80.0040.00417.97
8.2.70.0000.00817.62
8.2.60.0090.00018.16
8.2.50.0060.00318.07
8.2.40.0000.00918.16
8.2.30.0070.00018.14
8.2.20.0000.00917.68
8.2.10.0040.00417.89
8.2.00.0000.00817.64
8.1.270.0040.00424.66
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0040.00421.37
8.1.230.0040.00817.43
8.1.220.0030.00617.77
8.1.210.0000.00818.77
8.1.200.0060.00317.35
8.1.190.0000.00817.23
8.1.180.0070.00318.10
8.1.170.0040.00418.60
8.1.160.0040.00418.91
8.1.150.0000.00818.57
8.1.140.0040.00417.39
8.1.130.0000.00717.82
8.1.120.0030.00517.38
8.1.110.0080.00017.39
8.1.100.0030.00517.32
8.1.90.0070.00017.38
8.1.80.0000.00717.46
8.1.70.0030.00317.35
8.1.60.0040.00417.51
8.1.50.0060.00317.46
8.1.40.0070.00017.54
8.1.30.0050.00317.68
8.1.20.0030.00517.50
8.1.10.0050.00217.61
8.1.00.0000.00717.44
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0070.00018.32
8.0.270.0030.00317.17
8.0.260.0030.00316.76
8.0.250.0030.00516.95
8.0.240.0040.00416.96
8.0.230.0030.00316.84
8.0.220.0000.00716.76
8.0.210.0030.00316.89
8.0.200.0000.00716.83
8.0.190.0000.00716.88
8.0.180.0060.00316.77
8.0.170.0030.00516.80
8.0.160.0000.00716.87
8.0.150.0000.00816.82
8.0.140.0000.00816.70
8.0.130.0030.00313.20
8.0.120.0000.00816.88
8.0.110.0040.00416.94
8.0.100.0000.00716.91
8.0.90.0000.00716.89
8.0.80.0060.00916.80
8.0.70.0080.00016.64
8.0.60.0040.00416.70
8.0.50.0040.00416.91
8.0.30.0130.00517.30
8.0.20.0170.00916.99
8.0.10.0050.00316.89
8.0.00.0140.00716.71
7.4.330.0050.00013.01
7.4.320.0000.00616.60
7.4.300.0030.00316.51
7.4.290.0030.00316.47
7.4.280.0000.00816.46
7.4.270.0080.00016.58
7.4.260.0000.00613.28
7.4.250.0030.00616.41
7.4.240.0030.00316.58
7.4.230.0050.00216.67
7.4.220.0090.00916.62
7.4.210.0100.00716.58
7.4.200.0000.00716.62
7.4.190.0030.00316.43
7.4.160.0110.00516.56
7.4.150.0100.01016.47
7.4.140.0090.01116.58
7.4.130.0150.00316.45
7.4.120.0130.00516.55
7.4.110.0130.00316.51
7.4.100.0070.01016.38
7.4.90.0110.01216.45
7.4.80.0080.00916.48
7.4.70.0170.00016.48
7.4.60.0030.01316.65
7.4.50.0080.00016.41
7.4.40.0070.00716.30
7.4.30.0100.00716.64
7.4.00.0030.01214.99
7.3.330.0000.00713.36
7.3.320.0060.00013.30
7.3.310.0030.00316.20
7.3.300.0070.00016.22
7.3.290.0110.00416.39
7.3.280.0070.00916.31
7.3.270.0110.00716.33
7.3.260.0050.01416.48
7.3.250.0100.00916.35
7.3.240.0000.01616.38
7.3.230.0130.00316.52
7.3.210.0090.01216.50
7.3.200.0160.00619.39
7.3.190.0060.01316.35
7.3.180.0070.00716.44
7.3.170.0110.00416.48
7.3.160.0060.01316.35
7.3.120.0090.00614.91
7.3.110.0030.00614.46
7.3.100.0080.00814.64
7.3.90.0100.00314.58
7.3.80.0030.01214.82
7.3.70.0060.00614.71
7.3.60.0040.01114.76
7.3.50.0080.00415.02
7.3.40.0000.01214.66
7.3.30.0100.00314.91
7.3.20.0000.00916.72
7.3.10.0070.00716.42
7.3.00.0030.00616.59
7.2.330.0070.01116.49
7.2.320.0110.00616.40
7.2.310.0030.01716.81
7.2.300.0100.00616.70
7.2.290.0060.01216.78
7.2.250.0070.01014.92
7.2.240.0090.00915.08
7.2.230.0000.01515.27
7.2.220.0000.01615.22
7.2.210.0040.01214.63
7.2.200.0070.00715.12
7.2.190.0000.01515.06
7.2.180.0040.00715.18
7.2.170.0040.01215.11
7.2.00.0060.00619.34
7.1.330.0000.01215.82
7.1.320.0040.01116.05
7.1.310.0030.00615.58
7.1.300.0080.00415.59
7.1.290.0030.00915.88
7.1.280.0060.00615.75
7.1.270.0100.00315.82
7.1.260.0090.00615.59
7.1.100.0190.00617.91
7.1.70.0030.00617.34
7.1.60.0070.01719.40
7.1.50.0230.01334.91
7.1.00.0070.04722.46
7.0.200.0110.01114.74
7.0.140.0030.07321.97
7.0.120.0030.07321.98
7.0.60.0100.04020.00
7.0.50.0070.04017.83
7.0.40.0100.07717.86
7.0.30.0130.07017.79
7.0.20.0130.07717.80
7.0.10.0130.07717.75
7.0.00.0030.04717.71
5.6.210.0170.06320.52
5.6.200.0130.07718.24
5.6.190.0070.07318.22
5.6.180.0130.04318.15
5.6.170.0130.07718.19
5.6.160.0100.05018.19
5.6.150.0100.06018.15
5.6.140.0130.07018.14
5.6.130.0030.05318.25
5.6.120.0030.07318.23
5.6.110.0000.05018.28
5.6.100.0030.06318.14
5.6.90.0070.08718.10
5.6.80.0070.07717.50
5.6.70.0100.06317.50
5.6.60.0070.07717.55
5.6.50.0100.04317.55
5.6.40.0030.07017.55
5.6.30.0100.07717.54
5.6.20.0070.05717.59
5.6.10.0070.04717.54
5.6.00.0070.07717.59
5.5.350.0330.06320.40
5.5.340.0130.05017.95
5.5.330.0130.07717.99
5.5.320.0130.07318.04
5.5.310.0200.06717.98
5.5.300.0000.05018.01
5.5.290.0070.04317.98
5.5.280.0100.08318.03
5.5.270.0030.08018.07
5.5.260.0030.09018.08
5.5.250.0100.04317.76
5.5.240.0100.06317.47
5.5.230.0070.08717.30
5.5.220.0070.04017.29
5.5.210.0000.04317.47
5.5.200.0030.08017.34
5.5.190.0100.07317.40
5.5.180.0100.07317.42
5.5.160.0030.05017.39
5.5.150.0100.07317.29
5.5.140.0070.07717.34
5.5.130.0130.07017.30
5.5.120.0000.08017.39
5.5.110.0030.07717.32
5.5.100.0100.05317.24
5.5.90.0070.05017.20
5.5.80.0070.07717.32
5.5.70.0030.05017.19
5.5.60.0000.06317.22
5.5.50.0030.05017.29
5.5.40.0100.05017.19
5.5.30.0030.04017.33
5.5.20.0070.07717.23
5.5.10.0100.06017.27
5.5.00.0100.04317.27
5.4.450.0070.05319.36
5.4.440.0170.07019.59
5.4.430.0070.07719.45
5.4.420.0100.06319.44
5.4.410.0070.04019.24
5.4.400.0030.07719.13
5.4.390.0130.07319.01
5.4.380.0130.07319.14
5.4.370.0030.07719.05
5.4.360.0070.07718.95
5.4.350.0170.05719.01
5.4.340.0170.06719.11
5.4.320.0030.08319.01
5.4.310.0170.05719.16
5.4.300.0100.07019.09
5.4.290.0130.07018.88
5.4.280.0100.07719.07
5.4.270.0130.07319.06
5.4.260.0070.04319.11
5.4.250.0130.06318.97
5.4.240.0100.06719.26
5.4.230.0070.07719.10
5.4.220.0030.05319.09
5.4.210.0030.04319.00
5.4.200.0130.07319.11
5.4.190.0070.03719.12
5.4.180.0030.06319.08
5.4.170.0100.07319.03
5.4.160.0070.06318.95
5.4.150.0070.06019.07
5.4.140.0070.05016.41
5.4.130.0030.05716.38
5.4.120.0100.07016.38
5.4.110.0070.03316.59
5.4.100.0070.05316.39
5.4.90.0070.06016.23
5.4.80.0030.04716.39
5.4.70.0030.03716.39
5.4.60.0030.03316.38
5.4.50.0000.05316.39
5.4.40.0070.04016.26
5.4.30.0000.04016.44
5.4.20.0000.05716.44
5.4.10.0070.03316.43
5.4.00.0070.04015.66
5.3.290.0030.04314.73
5.3.280.0030.06714.65
5.3.270.0070.05314.65
5.3.260.0100.07314.66
5.3.250.0070.07714.63
5.3.240.0030.03714.64
5.3.230.0130.03714.59
5.3.220.0000.05014.64
5.3.210.0070.06714.62
5.3.200.0000.04014.78
5.3.190.0030.07314.66
5.3.180.0030.07714.41
5.3.170.0000.05714.61
5.3.160.0000.04014.62
5.3.150.0070.04314.52
5.3.140.0030.06714.76
5.3.130.0070.06714.57
5.3.120.0100.03714.50
5.3.110.0100.03314.59
5.3.100.0070.04014.00
5.3.90.0070.07314.01
5.3.80.0030.03714.05
5.3.70.0070.08013.89
5.3.60.0100.07314.09
5.3.50.0100.03013.96
5.3.40.0100.07713.99
5.3.30.0130.04714.12
5.3.20.0070.07313.90
5.3.10.0000.03713.66
5.3.00.0070.05713.52
5.2.170.0030.05711.19
5.2.160.0070.03010.99
5.2.150.0030.04011.00
5.2.140.0070.06011.19
5.2.130.0000.03311.16
5.2.120.0100.03011.17
5.2.110.0070.05311.15
5.2.100.0070.04011.14
5.2.90.0070.06011.14
5.2.80.0000.04011.11
5.2.70.0030.04311.09
5.2.60.0070.02711.04
5.2.50.0100.03011.22
5.2.40.0030.06311.02
5.2.30.0030.06310.96
5.2.20.0030.06010.86
5.2.10.0070.06010.80
5.2.00.0100.05310.71
5.1.60.0070.0379.96
5.1.50.0000.05710.07
5.1.40.0070.04010.05
5.1.30.0030.04710.34
5.1.20.0030.04310.30
5.1.10.0030.02710.01
5.1.00.0070.05310.28
5.0.50.0000.0408.52
5.0.40.0030.0378.40
5.0.30.0030.0278.28
5.0.20.0030.0378.10
5.0.10.0000.0278.24
5.0.00.0030.0538.14
4.4.90.0030.0207.53
4.4.80.0000.0307.53
4.4.70.0000.0407.53
4.4.60.0000.0377.53
4.4.50.0000.0377.53
4.4.40.0070.0377.53
4.4.30.0000.0307.53
4.4.20.0030.0237.53
4.4.10.0000.0377.53
4.4.00.0070.0307.53
4.3.110.0070.0177.53
4.3.100.0030.0177.53
4.3.90.0070.0137.53
4.3.80.0000.0407.53
4.3.70.0030.0207.53
4.3.60.0000.0377.53
4.3.50.0000.0277.53
4.3.40.0130.0437.53
4.3.30.0030.0377.53
4.3.20.0000.0207.53
4.3.10.0030.0307.53
4.3.00.0000.0337.53

preferences:
45.67 ms | 400 KiB | 5 Q