3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 'yo'; var_dump(substr( $x, 3 ));

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)
8.3.60.0070.01418.43
8.3.50.0080.01317.22
8.3.40.0090.00918.64
8.3.30.0080.00818.59
8.3.20.0080.00020.78
8.3.10.0030.00619.01
8.3.00.0040.00421.90
8.2.180.0090.00625.92
8.2.170.0140.00022.96
8.2.160.0100.00320.47
8.2.150.0050.00524.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00426.16
8.2.110.0100.00022.20
8.2.100.0070.00417.78
8.2.90.0000.00817.50
8.2.80.0050.00317.97
8.2.70.0040.00417.79
8.2.60.0040.00418.09
8.2.50.0040.00419.38
8.2.40.0040.00419.36
8.2.30.0000.00719.06
8.2.20.0000.00717.98
8.2.10.0040.00418.84
8.2.00.0040.00419.35
8.1.280.0120.00625.92
8.1.270.0080.00020.83
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00422.14
8.1.230.0080.00420.95
8.1.220.0000.00917.74
8.1.210.0050.00318.77
8.1.200.0030.00617.23
8.1.190.0070.00417.10
8.1.180.0040.00418.10
8.1.170.0000.00818.59
8.1.160.0000.00718.67
8.1.150.0050.00218.73
8.1.140.0040.00420.17
8.1.130.0000.00719.98
8.1.120.0040.00417.33
8.1.110.0000.00817.35
8.1.100.0080.00017.28
8.1.90.0030.00317.27
8.1.80.0050.00317.43
8.1.70.0000.00817.39
8.1.60.0040.00417.55
8.1.50.0060.00317.46
8.1.40.0040.00417.33
8.1.30.0040.00417.60
8.1.20.0060.00317.55
8.1.10.0040.00417.46
8.1.00.0070.00017.36
8.0.300.0040.00419.56
8.0.290.0050.00316.58
8.0.280.0030.00318.39
8.0.270.0030.00317.23
8.0.260.0000.00618.38
8.0.250.0000.00616.93
8.0.240.0030.00316.80
8.0.230.0000.00716.89
8.0.220.0030.00316.91
8.0.210.0000.00716.84
8.0.200.0070.00016.78
8.0.190.0040.00416.93
8.0.180.0000.00716.73
8.0.170.0120.00016.83
8.0.160.0000.00816.86
8.0.150.0040.00416.72
8.0.140.0040.00416.87
8.0.130.0070.00013.31
8.0.120.0000.00716.82
8.0.110.0000.00716.66
8.0.100.0000.00716.81
8.0.90.0000.00716.63
8.0.80.0070.00716.84
8.0.70.0000.00716.87
8.0.60.0000.00716.70
8.0.50.0000.00716.85
8.0.30.0110.00816.85
8.0.20.0100.01017.11
8.0.10.0030.00316.89
8.0.00.0090.01116.68
7.4.330.0050.00015.55
7.4.320.0040.00416.36
7.4.300.0070.00016.34
7.4.290.0060.00616.54
7.4.280.0120.00016.34
7.4.270.0050.00216.45
7.4.260.0040.00416.54
7.4.250.0070.00016.53
7.4.240.0030.00516.43
7.4.230.0030.00316.52
7.4.220.0080.00016.28
7.4.210.0050.00916.54
7.4.200.0000.00716.64
7.4.160.0060.01016.36
7.4.130.0080.00916.44
7.4.120.0060.01416.44
7.4.110.0030.01716.37
7.4.100.0130.00316.37
7.4.90.0060.00916.30
7.4.80.0070.01019.39
7.4.70.0130.00416.46
7.4.60.0120.00316.33
7.4.50.0060.00916.32
7.4.40.0110.00516.22
7.4.00.0040.01114.91
7.3.330.0060.00012.88
7.3.320.0050.00013.03
7.3.310.0000.00715.96
7.3.300.0000.00716.11
7.3.290.0070.00016.15
7.3.280.0120.00616.12
7.3.260.0080.00916.31
7.3.240.0120.00616.26
7.3.230.0080.00816.45
7.3.210.0070.01016.45
7.3.200.0150.00616.18
7.3.190.0030.01216.45
7.3.180.0090.00616.35
7.3.170.0140.00316.18
7.3.160.0120.01116.13
7.3.50.0060.01614.37
7.3.40.0090.00614.30
7.3.30.0150.00614.54
7.3.20.0090.00316.48
7.3.10.0080.00416.29
7.3.00.0100.00716.42
7.2.330.0090.00916.32
7.2.320.0100.00616.09
7.2.310.0060.01216.28
7.2.300.0090.00916.47
7.2.290.0030.01316.38
7.2.180.0070.01114.69
7.2.170.0110.00814.67
7.2.160.0100.00314.57
7.2.150.0140.01016.53
7.2.140.0080.00416.44
7.2.130.0190.00016.57
7.2.120.0160.00916.47
7.2.110.0090.01316.36
7.2.100.0080.01016.57
7.2.90.0120.00916.52
7.2.80.0080.00816.62
7.2.70.0090.00616.51
7.2.60.0160.00616.61
7.2.50.0070.00716.71
7.2.40.0090.00616.61
7.2.30.0180.00716.68
7.2.20.0140.01416.64
7.2.10.0140.01316.67
7.2.00.0160.00616.52
7.1.280.0130.00815.23
7.1.270.0080.00315.24
7.1.260.0090.00915.64
7.1.250.0090.01215.54

preferences:
63.09 ms | 401 KiB | 5 Q