3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = "actualité"; $o = "bônjour"; echo substr($o,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)
8.3.60.0110.00718.15
8.3.50.0140.00722.87
8.3.40.0140.00018.67
8.3.30.0120.00918.72
8.3.20.0050.00221.85
8.3.10.0000.00721.91
8.3.00.0040.00419.72
8.2.180.0110.00316.48
8.2.170.0110.00422.96
8.2.160.0030.01021.06
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00022.29
8.2.120.0000.00826.35
8.2.110.0060.00322.02
8.2.100.0100.00319.72
8.2.90.0030.00519.07
8.2.80.0040.00417.97
8.2.70.0030.00517.36
8.2.60.0000.00717.93
8.2.50.0050.00318.10
8.2.40.0030.00622.36
8.2.30.0070.00019.31
8.2.20.0000.00717.69
8.2.10.0080.00017.99
8.2.00.0070.00018.04
8.1.280.0140.00725.92
8.1.270.0040.00423.83
8.1.260.0050.00328.09
8.1.250.0040.00428.09
8.1.240.0090.00022.80
8.1.230.0070.00419.61
8.1.220.0060.00317.74
8.1.210.0060.00318.77
8.1.200.0030.00617.22
8.1.190.0040.00417.22
8.1.180.0080.00018.10
8.1.170.0060.00318.41
8.1.160.0000.00722.05
8.1.150.0040.00420.76
8.1.140.0070.00019.50
8.1.130.0030.00317.64
8.1.120.0030.00317.40
8.1.110.0030.00517.31
8.1.100.0000.00717.45
8.1.90.0040.00417.45
8.1.80.0000.00717.36
8.1.70.0030.00317.30
8.1.60.0030.00517.43
8.1.50.0040.00417.49
8.1.40.0050.00317.35
8.1.30.0040.00417.45
8.1.20.0040.00417.41
8.1.10.0040.00417.51
8.1.00.0040.00417.34
8.0.300.0040.00418.77
8.0.290.0070.00016.63
8.0.280.0000.00718.45
8.0.270.0000.00717.24
8.0.260.0030.00317.15
8.0.250.0070.00016.86
8.0.240.0060.00016.94
8.0.230.0060.00316.77
8.0.220.0030.00316.85
8.0.210.0000.00716.89
8.0.200.0030.00316.82
8.0.190.0040.00416.82
8.0.180.0050.00316.87
8.0.170.0040.00416.77
8.0.160.0000.00716.78
8.0.150.0030.00316.79
8.0.140.0000.00816.70
8.0.130.0050.00013.30
8.0.120.0000.00816.70
8.0.110.0000.00716.82
8.0.100.0050.00216.69
8.0.90.0050.00216.89
8.0.80.0180.00416.77
8.0.70.0040.00416.89
8.0.60.0050.00216.70
8.0.50.0000.00816.72
8.0.30.0050.01217.13
8.0.20.0080.01117.40
8.0.10.0000.00716.98
8.0.00.0030.01316.73
7.4.330.0020.00215.08
7.4.320.0030.00316.44
7.4.300.0030.00316.54
7.4.290.0000.00616.43
7.4.280.0050.00216.43
7.4.270.0070.00016.35
7.4.260.0030.00316.54
7.4.250.0000.00816.35
7.4.240.0080.00016.46
7.4.230.0000.00716.65
7.4.220.0160.00316.42
7.4.210.0050.01116.57
7.4.200.0000.00716.54
7.4.160.0060.00816.60
7.4.150.0030.01417.40
7.4.140.0100.00817.86
7.4.130.0070.01216.47
7.4.120.0030.01316.41
7.4.110.0100.00916.32
7.4.100.0100.00716.52
7.4.90.0160.01016.49
7.4.80.0130.00319.39
7.4.70.0030.01216.55
7.4.60.0120.00616.32
7.4.50.0040.01116.35
7.4.40.0140.00316.55
7.4.30.0000.01716.42
7.4.10.0070.01114.91
7.4.00.0050.01414.84
7.3.330.0000.00513.12
7.3.320.0000.00513.02
7.3.310.0000.00716.20
7.3.300.0020.00516.16
7.3.290.0030.00316.16
7.3.280.0090.00716.12
7.3.270.0050.01617.40
7.3.260.0110.01116.05
7.3.250.0100.00916.24
7.3.240.0110.00816.13
7.3.230.0050.01316.39
7.3.210.0070.01016.45
7.3.200.0030.01416.04
7.3.190.0090.00616.23
7.3.180.0090.00616.44
7.3.170.0100.01416.24
7.3.160.0130.00316.21
7.3.130.0030.01614.97
7.3.120.0060.01314.85
7.3.110.0040.01114.66
7.3.100.0000.01314.34
7.3.90.0030.00914.81
7.3.80.0100.00314.50
7.3.70.0100.00014.71
7.3.60.0070.00714.56
7.3.50.0090.00314.58
7.3.40.0030.01014.59
7.3.30.0070.00414.60
7.3.20.0060.00916.52
7.3.10.0060.00916.30
7.3.00.0120.00016.56
7.2.330.0110.00716.64
7.2.320.0080.01216.64
7.2.310.0100.00716.64
7.2.300.0080.00816.57
7.2.290.0070.01016.68
7.2.260.0070.00715.05
7.2.250.0140.00315.14
7.2.240.0030.01215.14
7.2.230.0060.00615.00
7.2.220.0070.00715.17
7.2.210.0060.00915.03
7.2.200.0030.01314.91
7.2.190.0050.00514.91
7.2.180.0070.00714.80
7.2.170.0060.00614.84
7.2.160.0060.00914.89
7.2.150.0030.01316.89
7.2.140.0060.00616.77
7.2.130.0090.00616.63
7.2.120.0000.01016.82
7.2.110.0120.00616.86
7.2.100.0090.00616.50
7.2.90.0070.00716.75
7.2.80.0130.00616.64
7.2.70.0100.00016.78
7.2.60.0130.00316.45
7.2.50.0120.00316.90
7.2.40.0030.01216.39
7.2.30.0120.00916.61
7.2.20.0070.01416.61
7.2.10.0000.01316.57
7.2.00.0040.01118.09
7.1.330.0100.00315.55
7.1.320.0030.01315.84
7.1.310.0040.00415.70
7.1.300.0000.01015.80
7.1.290.0060.00615.44
7.1.280.0000.01315.90
7.1.270.0000.01315.74
7.1.260.0060.00315.75
7.1.250.0090.00615.66
7.1.240.0040.00715.79
7.1.230.0000.01115.86
7.1.220.0060.00615.56
7.1.210.0040.01115.82
7.1.200.0040.01015.79
7.1.190.0080.00815.72
7.1.180.0100.00715.46
7.1.170.0120.00015.57
7.1.160.0000.01115.81
7.1.150.0090.00615.72
7.1.140.0060.00915.76
7.1.130.0030.00915.84
7.1.120.0040.01215.56
7.1.110.0110.00415.54
7.1.100.0040.01215.87
7.1.90.0040.00815.58
7.1.80.0000.01115.63
7.1.70.0050.00516.17
7.1.60.0090.00517.64
7.1.50.0100.00315.56
7.1.40.0090.00615.67
7.1.30.0090.00915.79
7.1.20.0070.01115.81
7.1.10.0060.00615.82
7.1.00.0050.04019.08
7.0.330.0000.01515.43
7.0.320.0060.00315.43
7.0.310.0100.00315.46
7.0.300.0040.01215.45
7.0.290.0030.00615.43
7.0.280.0070.01315.24
7.0.270.0070.00715.39
7.0.260.0000.00715.19
7.0.250.0060.00615.23
7.0.240.0030.01015.48
7.0.230.0030.00615.30
7.0.220.0070.00715.37
7.0.210.0030.01115.52
7.0.200.0190.00815.02
7.0.190.0060.01315.34
7.0.180.0070.01115.61
7.0.170.0090.00615.38
7.0.160.0000.00915.33
7.0.150.0040.00815.44
7.0.140.0000.01115.38
7.0.130.0070.00715.51
7.0.120.0030.00715.42
7.0.110.0060.00615.16
7.0.100.0120.00015.28
7.0.90.2800.00217.73
7.0.80.0420.00217.57
7.0.70.0380.00317.61
7.0.60.0400.00017.67
7.0.50.0400.00317.94
7.0.40.0410.00116.93
7.0.30.0420.00316.96
7.0.20.0450.00316.76
7.0.10.0530.00516.96
7.0.00.0470.00316.90
5.6.400.0040.00714.14
5.6.390.0060.00314.38
5.6.380.0070.00714.25
5.6.370.0030.00614.43
5.6.360.0030.00914.32
5.6.350.0040.00814.49
5.6.340.0000.01914.25
5.6.330.0070.00714.41
5.6.320.0120.00314.38
5.6.310.0090.00614.27
5.6.300.0040.01113.87
5.6.290.0100.00014.27
5.6.280.0090.00614.41
5.6.270.0090.00014.55
5.6.260.0110.00314.03
5.6.250.0030.01014.30
5.6.240.0420.00517.45
5.6.230.0390.00417.29
5.6.220.0370.00517.45
5.6.210.0390.00317.47
5.6.200.0480.00217.66
5.6.190.0370.00817.63
5.6.180.0400.00617.51
5.6.170.0400.00517.60
5.6.160.0430.00617.52
5.6.150.0380.00517.69
5.6.140.0510.00517.61
5.6.130.0350.00717.76
5.6.120.0430.00717.69
5.6.110.0370.00717.56
5.6.100.0400.00317.58
5.6.90.0470.00217.76
5.6.80.0370.00417.43
5.6.70.0410.00117.35
5.6.60.0410.00217.29
5.6.50.0480.00417.24
5.6.40.0400.00517.37
5.6.30.0390.00417.26
5.6.20.0370.00517.26
5.6.10.0370.00317.33
5.6.00.0410.00517.39

preferences:
62.83 ms | 401 KiB | 5 Q