3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo utf8_encode('Bailie, C. L., Baxter, M., O’Connell, N. E');

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)
8.3.60.0110.00716.75
8.3.50.0110.00417.94
8.3.40.0110.00718.50
8.3.30.0130.00318.54
8.3.20.0040.00418.97
8.3.10.0000.00821.77
8.3.00.0000.00820.49
8.2.180.0170.00318.45
8.2.170.0000.01522.96
8.2.160.0180.00419.00
8.2.150.0040.00424.18
8.2.140.0000.01124.66
8.2.130.0040.00417.91
8.2.120.0070.00026.35
8.2.110.0000.01022.23
8.2.100.0080.00417.62
8.2.90.0000.00917.75
8.2.80.0030.00517.97
8.2.70.0060.00317.68
8.2.60.0040.00418.16
8.2.50.0040.00418.10
8.2.40.0000.00919.17
8.2.30.0050.00219.05
8.2.20.0000.00717.99
8.2.10.0000.00817.96
8.2.00.0050.00317.57
8.1.270.0080.00018.88
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0030.00623.97
8.1.230.0070.00419.10
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0080.00017.35
8.1.190.0040.00417.10
8.1.180.0060.00318.10
8.1.170.0040.00418.50
8.1.160.0000.00818.63
8.1.150.0000.00718.79
8.1.140.0040.00422.13
8.1.130.0000.00820.12
8.1.120.0000.00717.36
8.1.110.0040.00417.31
8.1.100.0000.00817.31
8.1.90.0050.00517.29
8.1.80.0040.00417.38
8.1.70.0000.00817.20
8.1.60.0060.00317.46
8.1.50.0040.00417.27
8.1.40.0080.00017.32
8.1.30.0030.00617.52
8.1.20.0000.00817.46
8.1.10.0040.00417.34
8.1.00.0080.00017.38
8.0.300.0000.00718.77
8.0.290.0000.00816.58
8.0.280.0030.00318.27
8.0.270.0000.00717.25
8.0.260.0000.00618.29
8.0.250.0000.00616.89
8.0.240.0040.00416.92
8.0.230.0000.01016.75
8.0.220.0000.00816.76
8.0.210.0070.00016.75
8.0.200.0040.00416.76
8.0.190.0060.00316.84
8.0.180.0000.00716.84
8.0.170.0090.00016.66
8.0.160.0040.00416.65
8.0.150.0030.00316.70
8.0.140.0040.00316.76
8.0.130.0000.00613.17
8.0.120.0030.00516.71
8.0.110.0070.00016.70
8.0.100.0040.00416.63
8.0.90.0070.00016.64
8.0.80.0050.01416.72
8.0.70.0040.00416.77
8.0.60.0040.00416.66
8.0.50.0000.00716.76
8.0.30.0120.00616.85
8.0.20.0110.01017.40
8.0.10.0040.00416.88
8.0.00.0080.01316.62
7.4.330.0060.00015.55
7.4.320.0000.00616.50
7.4.300.0060.00016.52
7.4.290.0030.00316.36
7.4.280.0030.00716.28
7.4.270.0040.00216.35
7.4.260.0060.00316.38
7.4.250.0070.00016.41
7.4.240.0070.00016.46
7.4.230.0000.00716.57
7.4.220.0040.00416.16
7.4.210.0070.01016.45
7.4.200.0000.00716.36
7.4.160.0090.00816.36
7.4.140.0120.00717.86
7.4.130.0040.01416.30
7.4.120.0070.01116.42
7.4.110.0090.01316.27
7.4.100.0130.00316.59
7.4.90.0140.00416.31
7.4.80.0130.01019.39
7.4.70.0110.00716.42
7.4.60.0090.00916.41
7.4.50.0060.01016.41
7.4.40.0090.01016.32
7.3.330.0000.00513.03
7.3.320.0000.00612.87
7.3.310.0060.00316.15
7.3.300.0030.00316.10
7.3.290.0050.00216.08
7.3.280.0030.01216.14
7.3.260.0100.00916.33
7.3.240.0110.00716.17
7.3.230.0100.00716.34
7.3.210.0060.00916.23
7.3.200.0130.00316.21
7.3.190.0000.01616.09
7.3.180.0030.01316.22
7.3.170.0160.00016.29
7.3.160.0110.00816.42
7.2.330.0130.01016.32
7.2.320.0140.00716.53
7.2.310.0030.01216.50
7.2.300.0100.00716.54
7.2.290.0070.01016.43

preferences:
61.22 ms | 400 KiB | 5 Q