3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a['p'] = null; $a['c'] = false; echo isset($a['p']); echo " __ "; echo array_key_exists('p',$a); echo " ___ "; echo isset($a['c']);

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)
8.3.60.0160.00416.38
8.3.50.0160.00422.05
8.3.40.0110.00318.97
8.3.30.0030.01018.92
8.3.20.0080.00020.04
8.3.10.0050.00222.11
8.3.00.0070.00422.52
8.2.180.0090.00616.63
8.2.170.0090.00622.96
8.2.160.0120.00320.82
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0000.00819.32
8.2.110.0060.00322.25
8.2.100.0040.00817.84
8.2.90.0000.00719.25
8.2.80.0030.00617.97
8.2.70.0030.00617.63
8.2.60.0090.00017.93
8.2.50.0040.00418.07
8.2.40.0030.00518.16
8.2.30.0000.00818.07
8.2.20.0070.00017.70
8.2.10.0050.00317.55
8.2.00.0040.00417.66
8.1.280.0040.01125.92
8.1.270.0000.00823.84
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0000.00923.83
8.1.230.0080.00419.22
8.1.220.0000.00817.79
8.1.210.0000.00918.77
8.1.200.0060.00317.22
8.1.190.0000.00717.29
8.1.180.0070.00318.10
8.1.170.0030.00618.59
8.1.160.0080.00421.86
8.1.150.0050.00318.52
8.1.140.0040.00417.38
8.1.130.0040.00417.82
8.1.120.0040.00417.29
8.1.110.0050.00317.37
8.1.100.0040.00417.27
8.1.90.0000.00817.36
8.1.80.0000.00717.42
8.1.70.0030.00317.27
8.1.60.0100.00017.34
8.1.50.0040.00417.28
8.1.40.0020.00517.38
8.1.30.0040.00417.45
8.1.20.0040.00417.38
8.1.10.0040.00417.39
8.1.00.0000.00717.31
8.0.300.0040.00418.77
8.0.290.0080.00016.93
8.0.280.0000.00718.47
8.0.270.0050.00317.18
8.0.260.0030.00516.66
8.0.250.0000.00716.82
8.0.240.0000.00816.88
8.0.230.0040.00416.82
8.0.220.0040.00416.67
8.0.210.0040.00416.64
8.0.200.0000.00616.83
8.0.190.0070.00016.71
8.0.180.0030.00316.66
8.0.170.0070.00016.67
8.0.160.0030.00516.76
8.0.150.0040.00416.58
8.0.140.0070.00016.74
8.0.130.0040.00513.12
8.0.120.0000.00716.62
8.0.110.0040.00416.67
8.0.100.0000.00716.79
8.0.90.0040.00416.74
8.0.80.0190.00016.74
8.0.70.0070.00016.75
8.0.60.0050.00316.59
8.0.50.0000.00716.60
8.0.30.0120.00617.08
8.0.20.0090.01117.40
8.0.10.0030.00516.91
8.0.00.0110.00916.88
7.4.330.0000.00615.00
7.4.320.0040.00416.59
7.4.300.0040.00416.42
7.4.290.0030.00316.42
7.4.280.0070.00016.56
7.4.270.0000.00716.50
7.4.260.0070.00016.47
7.4.250.0040.00416.58
7.4.240.0040.00416.47
7.4.230.0040.00416.61
7.4.220.0130.01316.61
7.4.210.0050.01016.54
7.4.200.0040.00416.52
7.4.190.0040.00416.30
7.4.160.0130.00316.32
7.4.150.0100.01317.40
7.4.140.0050.01417.86
7.4.130.0080.01216.52
7.4.120.0110.00616.57
7.4.110.0030.01316.46
7.4.100.0190.00416.55
7.4.90.0140.00316.56
7.4.80.0130.00616.65
7.4.70.0120.00916.63
7.4.60.0130.00316.35
7.4.50.0000.00916.62
7.4.40.0100.00322.77
7.4.30.0140.00716.64
7.4.00.0000.01414.92
7.3.330.0000.00513.02
7.3.320.0000.00513.01
7.3.310.0050.00216.27
7.3.300.0070.00016.09
7.3.290.0160.00316.30
7.3.280.0080.00616.31
7.3.270.0080.00817.40
7.3.260.0070.01116.24
7.3.250.0090.00816.32
7.3.240.0120.01416.25
7.3.230.0080.00816.39
7.3.210.0120.00616.37
7.3.200.0200.00019.39
7.3.190.0090.00916.50
7.3.180.0140.00316.17
7.3.170.0090.00616.48
7.3.160.0140.00316.16
7.3.120.0140.00014.79
7.3.10.0060.00816.62
7.3.00.0040.00916.60
7.2.330.0030.01316.63
7.2.320.0090.00916.45
7.2.310.0110.00516.66
7.2.300.0140.00316.54
7.2.290.0100.00716.46
7.2.130.0070.00916.88
7.2.120.0070.00616.98
7.2.110.0100.00716.87
7.2.100.0050.00816.73
7.2.90.0080.00516.80
7.2.80.0040.01116.82
7.2.70.0070.00816.80
7.2.60.0020.01116.90
7.2.50.0040.01216.91
7.2.40.0070.00716.89
7.2.30.0070.00416.72
7.2.20.0010.01216.79
7.2.10.0040.00916.70
7.2.00.0060.00617.63
7.1.250.0010.00815.81
7.1.100.0000.01118.09
7.1.70.0000.01017.08
7.1.60.0070.01719.82
7.1.50.0030.01316.80
7.1.00.0030.07722.46
7.0.200.0030.00916.70
7.0.140.0030.06722.18
7.0.60.0000.09319.94
7.0.50.0030.06317.90
7.0.40.0070.08020.12
7.0.30.0270.07020.18
7.0.20.0370.07320.33
7.0.10.0370.07320.09
7.0.00.0130.05320.16
5.6.280.0030.07321.07
5.6.210.0070.06720.56
5.6.200.0000.04718.08
5.6.190.0070.04320.68
5.6.180.0070.07720.67
5.6.170.0370.06720.48
5.6.160.0030.04320.49
5.6.150.0030.07718.11
5.6.140.0030.08718.18
5.6.130.0100.05018.18
5.6.120.0070.06720.98
5.6.110.0000.04721.13
5.6.100.0100.06721.00
5.6.90.0100.06721.11
5.6.80.0000.04020.39
5.6.70.0170.08720.36
5.5.350.0100.08020.48
5.5.340.0030.05018.02
5.5.330.0100.06020.07
5.5.320.0270.03320.30
5.5.310.0170.06020.16
5.5.300.0070.05017.98
5.5.290.0130.05317.89
5.5.280.0000.09020.97
5.5.270.0130.07720.71
5.5.260.0100.06320.76
5.5.250.0130.06020.65
5.5.240.0030.04720.12
5.4.450.0770.05719.45
5.4.440.0500.05719.23
5.4.430.0330.04719.42
5.4.420.0130.05719.35
5.4.410.0130.07018.88
5.4.400.0170.04718.77
5.4.390.0100.05018.68
5.4.380.0130.06318.59
5.4.370.0200.06318.74
5.4.360.0430.06718.46
5.4.350.0500.05318.56
5.4.340.0300.05718.74
5.4.320.0080.03512.45
5.4.310.0050.03912.45
5.4.300.0050.03712.45
5.4.290.0050.03912.45
5.4.280.0030.05212.34
5.4.270.0060.03612.34
5.4.260.0090.03612.34
5.4.250.0140.03012.35
5.4.240.0060.03512.34
5.4.230.0050.04112.34
5.4.220.0100.03812.34
5.4.210.0060.03512.33
5.4.200.0060.03812.34
5.4.190.0180.04112.33
5.4.180.0160.04112.33
5.4.170.0160.04212.35
5.4.160.0190.04012.34
5.4.150.0170.04212.34
5.4.140.0130.04412.02
5.4.130.0110.04712.00
5.4.120.0170.04311.96
5.4.110.0260.04711.96
5.4.100.0130.04511.96
5.4.90.0160.04111.96
5.4.80.0150.04111.96
5.4.70.0150.04011.96
5.4.60.0140.04211.96
5.4.50.0130.04311.96
5.4.40.0220.06411.94
5.4.30.0170.04111.94
5.4.20.0270.05811.95
5.4.10.0180.03711.94
5.4.00.0200.03511.43
5.3.290.0060.04012.80
5.3.280.0050.03812.71
5.3.270.0160.04412.72
5.3.260.0130.04612.72
5.3.250.0180.04312.72
5.3.240.0230.06712.72
5.3.230.0160.04412.71
5.3.220.0220.03712.68
5.3.210.0180.04212.68
5.3.200.0180.04112.68
5.3.190.0170.04412.68
5.3.180.0140.04712.68
5.3.170.0180.05012.66
5.3.160.0280.06212.67
5.3.150.0120.04712.67
5.3.140.0150.04412.66
5.3.130.0280.06312.66
5.3.120.0170.04312.65
5.3.110.0180.04212.66
5.3.100.0160.04512.12
5.3.90.0190.04612.08
5.3.80.0110.05012.08
5.3.70.0130.04612.08
5.3.60.0140.04812.06
5.3.50.0200.03912.00
5.3.40.0200.04212.00
5.3.30.0140.04311.96
5.3.20.0180.04511.73
5.3.10.0310.08611.69
5.3.00.0160.04011.67
5.2.170.0070.0409.18
5.2.160.0140.0359.17
5.2.150.0160.0349.18
5.2.140.0150.0339.18
5.2.130.0140.0329.14
5.2.120.0100.0369.14
5.2.110.0260.0519.15
5.2.100.0130.0329.14
5.2.90.0100.0369.14
5.2.80.0140.0329.13
5.2.70.0130.0339.13
5.2.60.0130.0339.09
5.2.50.0120.0359.05
5.2.40.0070.0399.04
5.2.30.0140.0329.00
5.2.20.0250.0839.00
5.2.10.0150.0308.92
5.2.00.0110.0338.78
5.1.60.0080.0318.07
5.1.50.0120.0288.06
5.1.40.0110.0298.05
5.1.30.0430.0628.39
5.1.20.0080.0348.42
5.1.10.0100.0318.14
5.1.00.0160.0558.14
5.0.50.0110.0236.63
5.0.40.0130.0206.48
5.0.30.0090.0366.30
5.0.20.0110.0216.27
5.0.10.0090.0226.25
5.0.00.0110.0336.24
4.4.90.0120.0144.78
4.4.80.0090.0174.76
4.4.70.0060.0204.75
4.4.60.0160.0404.76
4.4.50.0060.0194.77
4.4.40.0080.0304.71
4.4.30.0050.0224.76
4.4.20.0100.0174.84
4.4.10.0100.0164.85
4.4.00.0050.0314.76
4.3.110.0100.0164.67
4.3.100.0080.0174.66
4.3.90.0030.0234.63
4.3.80.0080.0284.58
4.3.70.0060.0194.63
4.3.60.0090.0164.63
4.3.50.0100.0154.62
4.3.40.0080.0264.54
4.3.30.0040.0193.29
4.3.20.0060.0183.27
4.3.10.0070.0163.23
4.3.00.0030.01715.17

preferences:
51.06 ms | 401 KiB | 5 Q