3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = '\'; echo json_encode($s);

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)
5.4.350.0270.03719.09
5.4.340.0100.04412.01
5.4.320.0080.04912.50
5.4.310.0080.05112.49
5.4.300.0080.03712.50
5.4.290.0070.04212.50
5.4.280.0100.03512.39
5.4.270.0100.03812.39
5.4.260.0150.06512.39
5.4.250.0070.04312.39
5.4.240.0040.03912.39
5.4.230.0050.04012.38
5.4.220.0110.03812.38
5.4.210.0100.04012.38
5.4.200.0110.06012.38
5.4.190.0100.06112.38
5.4.180.0050.05412.38
5.4.170.0080.05012.39
5.4.160.0120.04312.38
5.4.150.0100.04412.38
5.4.140.0050.05112.07
5.4.130.0060.04912.05
5.4.120.0060.04212.02
5.4.110.0090.03512.01
5.4.100.0050.04112.01
5.4.90.0070.03612.01
5.4.80.0080.03612.01
5.4.70.0050.03812.00
5.4.60.0080.03512.01
5.4.50.0070.03712.01
5.4.40.0060.03612.00
5.4.30.0060.03511.99
5.4.20.0080.03311.99
5.4.10.0080.03811.99
5.4.00.0060.03811.48
5.3.290.0050.04312.80
5.3.280.0050.04412.71
5.3.270.0080.04012.72
5.3.260.0100.03812.72
5.3.250.0080.05012.72
5.3.240.0100.03712.72
5.3.230.0080.04312.71
5.3.220.0100.04012.68
5.3.210.0050.04512.68
5.3.200.0080.03612.68
5.3.190.0070.03912.68
5.3.180.0060.04812.67
5.3.170.0110.03712.67
5.3.160.0120.03312.67
5.3.150.0090.03412.68
5.3.140.0080.04212.66
5.3.130.0070.05212.66
5.3.120.0100.04812.66
5.3.110.0090.04412.66
5.3.100.0080.04212.12
5.3.90.0110.03812.09
5.3.80.0080.03812.08
5.3.70.0070.03512.08
5.3.60.0080.03412.06
5.3.50.0030.04212.00
5.3.40.0060.03912.00
5.3.30.0090.03511.95
5.3.20.0090.03411.73
5.3.10.0080.03511.70
5.3.00.0090.04011.68
5.2.170.0070.0409.18
5.2.160.0060.0359.18
5.2.150.0070.0369.18
5.2.140.0070.0329.18
5.2.130.0090.0289.14
5.2.120.0060.0329.14
5.2.110.0060.0289.15
5.2.100.0040.0289.14
5.2.90.0070.0279.14
5.2.80.0070.0439.14
5.2.70.0080.0409.14
5.2.60.0060.0319.09
5.2.50.0040.0319.05
5.2.40.0070.0319.03
5.2.30.0030.0379.02
5.2.20.0060.0279.00
5.2.10.0060.0318.93
5.2.00.0080.0318.78
5.1.60.0080.0228.06
5.1.50.0110.0228.06
5.1.40.0080.0308.04
5.1.30.0040.0318.40
5.1.20.0050.0298.42
5.1.10.0060.0308.14
5.1.00.0070.0298.14
5.0.50.0100.0246.62
5.0.40.0090.0216.48
5.0.30.0040.0346.29
5.0.20.0060.0176.26
5.0.10.0020.0236.24
5.0.00.0070.0296.23
4.4.90.0060.0144.78
4.4.80.0080.0204.76
4.4.70.0010.0194.75
4.4.60.0020.0164.75
4.4.50.0040.0154.77
4.4.40.0030.0274.71
4.4.30.0020.0194.76
4.4.20.0020.0174.84
4.4.10.0030.0164.85
4.4.00.0060.0254.76
4.3.110.0060.0174.67
4.3.100.0020.0164.66
4.3.90.0040.0164.63
4.3.80.0060.0254.58
4.3.70.0040.0154.63
4.3.60.0060.0144.63
4.3.50.0050.0184.63
4.3.40.0030.0264.53
4.3.30.0010.0183.28
4.3.20.0020.0163.26
4.3.10.0020.0203.21
4.3.00.0000.01312.82

preferences:
135.86 ms | 1398 KiB | 7 Q