3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr_compare("LECTURER", "LECT", 0, 4);

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)
8.3.60.0130.00316.50
8.3.50.0120.00717.32
8.3.40.0040.01118.44
8.3.30.0070.01018.74
8.3.20.0040.00418.77
8.3.10.0080.00018.53
8.3.00.0040.00419.13
8.2.180.0070.00718.29
8.2.170.0110.00422.96
8.2.160.0060.01018.87
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00420.87
8.2.110.0060.00321.04
8.2.100.0040.00817.59
8.2.90.0030.00621.02
8.2.80.0050.00319.30
8.2.70.0040.00417.50
8.2.60.0040.00417.89
8.2.50.0040.00418.07
8.2.40.0000.00718.22
8.2.30.0040.00417.85
8.2.20.0090.00017.43
8.2.10.0070.00017.50
8.2.00.0000.00817.43
8.1.280.0120.00325.92
8.1.270.0070.00023.99
8.1.260.0030.00526.35
8.1.250.0000.00728.09
8.1.240.0060.00620.59
8.1.230.0090.00320.95
8.1.220.0000.00817.74
8.1.210.0000.00918.85
8.1.200.0030.00617.22
8.1.190.0070.00017.41
8.1.180.0050.00318.10
8.1.170.0040.00418.86
8.1.160.0030.00318.72
8.1.150.0040.00418.44
8.1.140.0000.00717.33
8.1.130.0070.00017.76
8.1.120.0020.00517.35
8.1.110.0000.00817.20
8.1.100.0040.00417.34
8.1.90.0000.00817.23
8.1.80.0040.00417.23
8.1.70.0000.00717.23
8.1.60.0030.00617.43
8.1.50.0040.00417.39
8.1.40.0040.00417.30
8.1.30.0000.00917.50
8.1.20.0000.00717.41
8.1.10.0000.00817.42
8.1.00.0040.00417.27
8.0.300.0070.00019.90
8.0.290.0020.00516.58
8.0.280.0000.00718.43
8.0.270.0000.00817.16
8.0.260.0070.00016.75
8.0.250.0050.00216.79
8.0.240.0080.00016.80
8.0.230.0000.00816.84
8.0.220.0000.00716.68
8.0.210.0040.00416.75
8.0.200.0000.00716.89
8.0.190.0040.00416.84
8.0.180.0080.00016.78
8.0.170.0040.00416.75
8.0.160.0000.00816.73
8.0.150.0050.00316.66
8.0.140.0000.00816.75
8.0.130.0000.00513.19
8.0.120.0000.00816.72
8.0.110.0040.00416.82
8.0.100.0040.00416.67
8.0.90.0000.00716.83
8.0.80.0160.00716.73
8.0.70.0000.00816.80
8.0.60.0000.00716.73
8.0.50.0080.00016.82
8.0.30.0130.00716.98
8.0.20.0080.01217.09
8.0.10.0000.00716.88
8.0.00.0140.00516.60
7.4.330.0050.00012.87
7.4.320.0030.00316.38
7.4.300.0000.00716.37
7.4.290.0030.00316.27
7.4.280.0070.00016.46
7.4.270.0000.00716.37
7.4.260.0030.00313.21
7.4.250.0080.00016.46
7.4.240.0030.00316.39
7.4.230.0030.00316.42
7.4.220.0130.00916.43
7.4.210.0070.00716.39
7.4.200.0030.00316.55
7.4.190.0040.00416.42
7.4.160.0110.01416.32
7.4.150.0060.01116.45
7.4.140.0050.01116.46
7.4.130.0100.00716.43
7.4.120.0060.01016.34
7.4.110.0120.01216.43
7.4.100.0070.01016.29
7.4.90.0150.00316.47
7.4.80.0060.01019.39
7.4.70.0080.01216.39
7.4.60.0060.01016.45
7.4.50.0000.00816.36
7.4.40.0070.01016.27
7.4.30.0090.00916.55
7.4.00.0000.01414.89
7.3.330.0000.00613.05
7.3.320.0030.00512.96
7.3.310.0070.00016.13
7.3.300.0030.00316.14
7.3.290.0100.00516.14
7.3.280.0050.01216.09
7.3.270.0160.00316.44
7.3.260.0120.00616.35
7.3.250.0120.00916.11
7.3.240.0130.00316.02
7.3.230.0110.00516.46
7.3.210.0070.01516.29
7.3.200.0060.00916.24
7.3.190.0030.01216.31
7.3.180.0070.01016.23
7.3.170.0090.00616.30
7.3.160.0090.00616.10
7.3.120.0030.01214.26
7.3.10.0070.00816.42
7.3.00.0070.00616.46
7.2.330.0130.01016.38
7.2.320.0030.01316.65
7.2.310.0090.00916.48
7.2.300.0090.00916.56
7.2.290.0150.00316.28
7.2.130.0070.00816.57
7.2.120.0130.00316.64
7.2.110.0070.00916.71
7.2.100.0060.00816.59
7.2.90.0090.00716.59
7.2.80.0100.00616.51
7.2.70.0050.00716.48
7.2.60.0100.00616.70
7.2.50.0050.00916.49
7.2.40.0070.00916.75
7.2.30.0080.00716.66
7.2.20.0070.00616.79
7.2.10.0070.00916.45
7.2.00.0080.00517.30
7.1.250.0090.00515.52
7.1.100.0070.00717.99
7.1.70.0000.00817.12
7.1.60.0100.01419.30
7.1.50.0030.01416.86
7.1.00.0070.07022.37
7.0.200.0100.00016.52
7.0.140.0030.07022.09
7.0.120.0030.07322.04
7.0.60.0130.06719.96
7.0.50.0030.04017.84
7.0.40.0070.05319.98
7.0.30.0330.07320.04
7.0.20.0370.06720.20
7.0.10.0070.06720.33
7.0.00.0130.07320.20
5.6.280.0030.07320.80
5.6.210.0000.04320.60
5.6.200.0030.09018.18
5.6.190.0070.06720.63
5.6.180.3230.04320.43
5.6.170.0300.08020.52
5.6.160.0070.04720.46
5.6.150.0170.06718.21
5.6.140.0170.07318.14
5.6.130.0000.08718.18
5.6.120.0000.09720.99
5.6.110.0030.08721.11
5.6.100.0130.06321.03
5.6.90.0030.04320.97
5.6.80.0200.06720.50
5.6.70.4500.03720.39
5.5.350.3970.04720.34
5.5.340.0130.06717.93
5.5.330.0030.06720.21
5.5.320.3670.04020.24
5.5.310.0200.03720.28
5.5.300.0030.08717.90
5.5.290.0100.06718.02
5.5.280.0070.07020.96
5.5.270.0130.08020.88
5.5.260.0130.08020.86
5.5.250.0170.07320.69
5.5.240.0230.04720.25
5.4.450.0030.04019.14
5.4.440.0300.02719.46
5.4.430.0030.07319.11
5.4.420.0070.04719.44
5.4.410.0030.04019.00
5.4.400.0170.04718.79
5.4.390.0070.03319.18
5.4.380.0070.06018.79
5.4.370.0030.05018.91
5.4.360.0030.04019.18
5.4.350.0100.06319.14
5.4.340.0070.03719.02
5.4.320.0130.03718.91
5.4.310.0030.08019.16
5.4.300.0030.06319.16
5.4.290.0100.07018.78
5.4.280.0130.06719.11
5.4.270.0070.07719.15
5.4.260.0030.06318.91
5.4.250.0070.08019.07
5.4.240.0030.04318.91
5.4.230.0100.03719.13
5.4.220.0070.05319.14
5.4.210.0130.05019.08
5.4.200.0000.04719.15
5.4.190.0070.03719.13
5.4.180.0100.04318.99
5.4.170.0130.06319.17
5.4.160.0030.05318.91
5.4.150.0030.05019.05
5.4.140.0030.03716.34
5.4.130.0070.03316.47
5.4.120.0000.04716.43
5.4.110.0130.04016.38
5.4.100.0030.04716.23
5.4.90.0100.07316.40
5.4.80.0030.04316.29
5.4.70.0070.05716.39
5.4.60.0030.05316.37
5.4.50.0030.03316.25
5.4.40.0030.04716.21
5.4.30.0070.03316.25
5.4.20.0070.04716.26
5.4.10.0100.04016.37
5.4.00.0000.04015.72
5.3.290.0000.04714.59
5.3.280.0070.04314.52
5.3.270.0070.05714.56
5.3.260.0030.07314.53
5.3.250.0070.07714.53
5.3.240.0100.03314.48
5.3.230.0070.05014.52
5.3.220.0000.04314.50
5.3.210.0130.06714.53
5.3.200.0030.08014.50
5.3.190.0030.04714.36
5.3.180.0070.03314.44
5.3.170.0030.06314.48
5.3.160.0100.03014.51
5.3.150.0030.03714.64
5.3.140.0070.06314.52
5.3.130.0030.05314.55
5.3.120.0100.06714.63
5.3.110.0070.04314.63
5.3.100.0030.04313.85
5.3.90.0030.06313.84
5.3.80.0070.03713.94
5.3.70.0070.04013.83
5.3.60.0030.03713.93
5.3.50.0100.05713.87
5.3.40.0030.05713.73
5.3.30.0130.06713.92
5.3.20.0070.04713.61
5.3.10.0070.07013.63
5.3.00.0100.04713.56
5.2.170.0030.03711.02
5.2.160.0070.03311.24
5.2.150.0000.03311.13
5.2.140.0000.04011.14
5.2.130.0030.03311.10
5.2.120.0130.02011.02
5.2.110.0030.04011.00
5.2.100.0100.05711.18
5.2.90.0100.03311.08
5.2.80.0070.04711.02
5.2.70.0070.06011.02
5.2.60.0000.03710.93
5.2.50.0030.03010.89
5.2.40.0070.04310.89
5.2.30.0070.02711.05
5.2.20.0070.03010.88
5.2.10.0000.06310.80
5.2.00.0030.03710.66
5.1.60.0100.0509.95
5.1.50.0130.03310.05
5.1.40.0000.03310.02
5.1.30.0070.03710.34
5.1.20.0030.03310.26
5.1.10.0070.02310.20
5.1.00.0030.02710.10
5.0.50.0100.0138.58
5.0.40.0070.0278.58
5.0.30.0070.0638.58
5.0.20.0000.0508.58
5.0.10.0030.0438.58
5.0.00.0070.0578.58
4.4.90.0000.0238.58
4.4.80.0030.0338.58
4.4.70.0030.0378.58
4.4.60.0000.0308.58
4.4.50.0000.0238.58
4.4.40.0030.0538.58
4.4.30.0030.0178.58
4.4.20.0030.0238.58
4.4.10.0030.0208.58
4.4.00.0000.0278.58
4.3.110.0070.0238.58
4.3.100.0030.0178.58
4.3.90.0030.0338.58
4.3.80.0030.0478.58
4.3.70.0030.0138.58
4.3.60.0030.0278.58
4.3.50.0000.0178.58
4.3.40.0030.0538.58
4.3.30.0030.0338.58
4.3.20.0000.0308.58
4.3.10.0000.0238.58
4.3.00.0070.0278.58

preferences:
35.41 ms | 401 KiB | 5 Q