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($a['p']); echo " ___ "; echo isset($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)
8.3.60.0110.00716.73
8.3.50.0160.00721.94
8.3.40.0140.00718.87
8.3.30.0110.00419.21
8.3.20.0050.00320.39
8.3.10.0040.00423.53
8.3.00.0050.00319.51
8.2.180.0110.00718.54
8.2.170.0150.00022.96
8.2.160.0070.00720.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0060.00626.16
8.2.120.0040.00422.25
8.2.110.0060.00319.45
8.2.100.0090.00319.38
8.2.90.0030.00517.88
8.2.80.0030.00617.97
8.2.70.0000.00818.03
8.2.60.0080.00018.03
8.2.50.0000.00818.10
8.2.40.0040.00419.36
8.2.30.0040.00419.38
8.2.20.0070.00017.81
8.2.10.0000.00717.93
8.2.00.0050.00217.62
8.1.280.0070.00725.92
8.1.270.0070.01123.79
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0090.00022.58
8.1.230.0080.00322.30
8.1.220.0040.00417.79
8.1.210.0030.00618.77
8.1.200.0030.00717.35
8.1.190.0000.00817.35
8.1.180.0000.00718.10
8.1.170.0090.00018.54
8.1.160.0000.00718.78
8.1.150.0000.00718.69
8.1.140.0040.00417.32
8.1.130.0030.00317.70
8.1.120.0000.00717.30
8.1.110.0000.00817.30
8.1.100.0040.00417.26
8.1.90.0040.00417.26
8.1.80.0040.00417.34
8.1.70.0030.00317.29
8.1.60.0040.00417.45
8.1.50.0000.00817.52
8.1.40.0030.00617.45
8.1.30.0050.00317.43
8.1.20.0000.00817.49
8.1.10.0070.00017.41
8.1.00.0070.00017.45
8.0.300.0040.00418.77
8.0.290.0040.00716.75
8.0.280.0030.00318.46
8.0.270.0000.00717.32
8.0.260.0000.00716.81
8.0.250.0030.00317.01
8.0.240.0030.00317.02
8.0.230.0030.00316.86
8.0.220.0000.00716.80
8.0.210.0000.00616.91
8.0.200.0000.00616.91
8.0.190.0000.00716.93
8.0.180.0000.00816.89
8.0.170.0000.00816.93
8.0.160.0030.00616.71
8.0.150.0050.00316.82
8.0.140.0000.00816.91
8.0.130.0000.00613.32
8.0.120.0040.00416.86
8.0.110.0000.00716.82
8.0.100.0030.00516.96
8.0.90.0040.00416.95
8.0.80.0100.01016.89
8.0.70.0000.00716.77
8.0.60.0000.00716.93
8.0.50.0050.00216.84
8.0.30.0110.00917.08
8.0.20.0100.00817.40
8.0.10.0000.00716.76
8.0.00.0210.01616.79
7.4.330.0050.00015.03
7.4.320.0000.00616.54
7.4.300.0060.00016.38
7.4.290.0070.00016.57
7.4.280.0030.00316.50
7.4.270.0030.00316.46
7.4.260.0030.00316.44
7.4.250.0000.00816.51
7.4.240.0000.00716.49
7.4.230.0070.00016.48
7.4.220.0070.01116.64
7.4.210.0030.01316.43
7.4.200.0070.00016.61
7.4.190.0070.00016.60
7.4.160.0040.01416.61
7.4.150.0070.01117.40
7.4.140.0060.01117.86
7.4.130.0120.00516.51
7.4.120.0100.00716.59
7.4.110.0130.00316.47
7.4.100.0130.00516.51
7.4.90.0090.00916.56
7.4.80.0100.00719.39
7.4.70.0060.01116.73
7.4.60.0100.00616.54
7.4.50.0020.00216.66
7.4.40.0000.01722.77
7.4.30.0130.00316.56
7.4.00.0090.00815.09
7.3.330.0030.00313.27
7.3.320.0030.00313.19
7.3.310.0030.00316.36
7.3.300.0070.00016.33
7.3.290.0040.01316.44
7.3.280.0120.00716.38
7.3.270.0030.01517.40
7.3.260.0130.00316.43
7.3.250.0100.01016.30
7.3.240.0110.00816.66
7.3.230.0120.00616.44
7.3.210.0110.00616.37
7.3.200.0160.00719.39
7.3.190.0060.00716.65
7.3.180.0060.01016.61
7.3.170.0150.00016.67
7.3.160.0100.00716.39
7.3.120.0110.00614.88
7.3.110.0030.01514.96
7.3.100.0050.00814.95
7.3.90.0040.00714.97
7.3.80.0030.00914.67
7.3.70.0080.00614.92
7.3.60.0080.00814.88
7.3.50.0050.01014.81
7.3.40.0080.00514.62
7.3.30.0090.00514.86
7.3.20.0030.00816.40
7.3.10.0080.00516.54
7.3.00.0060.01016.51
7.2.330.0100.00716.32
7.2.320.0070.01016.71
7.2.310.0090.00916.67
7.2.300.0040.01216.27
7.2.290.0090.00916.63
7.2.250.0070.01014.79
7.2.240.0050.01215.19
7.2.230.0060.00915.17
7.2.220.0070.00514.88
7.2.210.0080.00715.04
7.2.200.0080.00714.86
7.2.190.0000.01415.15
7.2.180.0040.01314.99
7.2.170.0040.01114.96
7.2.130.0150.00316.75
7.2.120.0060.00316.83
7.2.110.0000.01716.83
7.2.100.0120.00316.85
7.2.90.0090.00616.63
7.2.80.0000.01717.04
7.2.70.0080.00316.78
7.2.60.0080.00416.85
7.2.50.0080.00816.59
7.2.40.0110.00816.80
7.2.30.0030.00616.55
7.2.20.0150.00316.66
7.2.10.0200.01116.81
7.2.00.0030.01016.72
7.1.330.0100.00415.85
7.1.320.0050.00815.78
7.1.310.0060.00615.47
7.1.300.0060.00415.73
7.1.290.0000.01215.74
7.1.280.0030.01315.73
7.1.270.0060.00615.70
7.1.260.0050.00715.86
7.1.250.0070.00715.68
7.1.240.0040.01115.79
7.1.230.0020.00515.85
7.1.220.0030.00915.80
7.1.210.0040.00715.84
7.1.200.0160.00015.84
7.1.190.0040.00415.68
7.1.180.0030.01015.71
7.1.170.0070.00715.54
7.1.160.0000.01415.53
7.1.150.0130.00315.75
7.1.140.0140.01015.75
7.1.130.0160.01015.75
7.1.120.0090.01415.56
7.1.110.0120.00615.62
7.1.100.0080.00515.37
7.1.90.0040.00415.50
7.1.80.0000.01315.90
7.1.70.0030.00916.11
7.1.60.0050.00616.53
7.1.50.0120.00816.30
7.1.40.0000.01115.56
7.1.30.0030.00615.55
7.1.20.0030.01015.48
7.1.10.0040.01115.44
7.1.00.0040.04118.95
7.0.330.0040.00815.18
7.0.320.0030.00615.37
7.0.310.0100.00315.21
7.0.300.0000.01315.20
7.0.290.0060.00615.48
7.0.280.0030.01015.42
7.0.270.0110.01115.20
7.0.260.0200.00715.07
7.0.250.0030.01015.20
7.0.240.0070.00715.34
7.0.230.0100.00315.13
7.0.220.0100.00315.43
7.0.210.0090.00615.43
7.0.200.0060.00916.25
7.0.190.0000.01715.20
7.0.180.0110.00715.30
7.0.170.0070.00715.35
7.0.160.0000.00815.49
7.0.150.0050.00315.55
7.0.140.0080.05018.62
7.0.130.0060.00614.96
7.0.120.0000.01315.19
7.0.110.0000.01315.47
7.0.100.0070.01015.36
7.0.90.0030.00715.52
7.0.80.0040.00815.10
7.0.70.0100.00715.37
7.0.60.0100.04417.66
7.0.50.0070.02816.62
7.0.40.0030.02816.78
7.0.30.0120.04516.91
7.0.20.0250.04016.82
7.0.10.0260.04316.68
7.0.00.0210.03016.72
5.6.380.0090.00414.35
5.6.370.0060.01114.39
5.6.360.0140.00414.23
5.6.350.0060.00614.02
5.6.340.0190.00614.06
5.6.330.0150.00914.12
5.6.320.0000.01113.87
5.6.310.0000.01414.30
5.6.300.0100.00314.28
5.6.290.0030.01314.37
5.6.280.0080.03217.51
5.6.270.0080.01114.05
5.6.260.0070.00814.14
5.6.250.0080.00614.39
5.6.240.0070.00714.16
5.6.230.0000.01014.16
5.6.220.0130.00313.93
5.6.210.0080.04017.25
5.6.200.0080.04416.28
5.6.190.0070.04517.38
5.6.180.0080.02817.25
5.6.170.0220.04317.20
5.6.160.0330.04317.47
5.6.150.0140.04416.17
5.6.140.0090.03416.19
5.6.130.0150.02116.14
5.6.120.0170.04217.60
5.6.110.0160.02317.66
5.6.100.0100.04117.59
5.6.90.0330.03017.63
5.6.80.0140.04217.25
5.6.70.0190.00414.21
5.6.60.0250.00514.02
5.6.50.0140.00714.49
5.6.40.0390.00314.03
5.6.30.0210.01014.12
5.6.20.0240.00314.03
5.6.10.0070.00713.92
5.6.00.0140.01414.24
5.5.380.0050.00311.30
5.5.370.0080.00411.10
5.5.360.0060.00311.29
5.5.350.0100.02215.62
5.5.340.0030.03014.38
5.5.330.0120.04215.72
5.5.320.0060.03515.63
5.5.310.0220.03715.80
5.5.300.0070.02614.47
5.5.290.0070.04114.57
5.5.280.0070.02215.90
5.5.270.0080.04715.90
5.5.260.0160.03215.93
5.5.250.0070.04515.78
5.5.240.0080.02315.63
5.5.230.0150.00310.78
5.5.220.0080.00410.86
5.5.210.0170.00710.90
5.5.200.0110.00810.96
5.5.190.0170.00310.74
5.5.180.0030.00610.78
5.5.170.0140.00311.10
5.5.160.0180.00710.85
5.5.150.0070.00710.81
5.5.140.0040.00710.91
5.5.130.0040.00710.93
5.5.120.0120.00310.91
5.5.110.0090.00610.95
5.5.100.0100.00710.98
5.5.90.0120.00611.16
5.5.80.0060.00611.05
5.5.70.0110.00710.75
5.5.60.0140.00310.90
5.5.50.0070.00710.93
5.5.40.0000.00710.76
5.5.30.0030.00611.03
5.5.20.0090.00910.75
5.5.10.0060.00610.94
5.5.00.0060.00310.98
5.4.450.0230.03515.09
5.4.440.0460.03315.13
5.4.430.0090.03615.18
5.4.420.0400.02815.20
5.4.410.0380.03014.95
5.4.400.0430.02814.96
5.4.390.0430.03114.81
5.4.380.0180.03314.72
5.4.370.0220.02714.68
5.4.360.0100.03314.87
5.4.350.0200.02714.84
5.4.340.0130.03214.56
5.4.330.0080.00810.74
5.4.320.0070.02111.60
5.4.310.0070.02411.62
5.4.300.0060.02211.56
5.4.290.0040.02311.71
5.4.280.0040.02311.58
5.4.270.0080.02011.53
5.4.260.0100.02211.62
5.4.250.0060.02311.70
5.4.240.0090.01911.60
5.4.230.0040.02511.61
5.4.220.0080.01911.58
5.4.210.0060.02511.63
5.4.200.0050.02611.60
5.4.190.0160.02511.59
5.4.180.0100.02711.57
5.4.170.0230.04811.50
5.4.160.0270.04111.71
5.4.150.0100.02711.63
5.4.140.0320.03911.28
5.4.130.0210.04811.62
5.4.120.0280.04311.54
5.4.110.0390.04311.48
5.4.100.0110.02411.35
5.4.90.0210.04611.41
5.4.80.0200.02211.51
5.4.70.0180.04911.49
5.4.60.0170.04511.46
5.4.50.0200.04311.41
5.4.40.0210.04311.50
5.4.30.0160.02311.34
5.4.20.0190.04911.34
5.4.10.0150.02311.38
5.4.00.0220.04211.08
5.3.290.0060.02611.69
5.3.280.0080.01811.54
5.3.270.0130.02811.56
5.3.260.0090.02711.60
5.3.250.0220.04411.61
5.3.240.0130.02111.50
5.3.230.0280.04411.53
5.3.220.0130.02311.58
5.3.210.0180.03611.50
5.3.200.0150.05211.48
5.3.190.0200.04911.43
5.3.180.0160.02111.63
5.3.170.0180.04811.58
5.3.160.0240.07211.62
5.3.150.0140.05511.61
5.3.140.0220.04811.54
5.3.130.0150.05211.60
5.3.120.0280.03911.63
5.3.110.0200.04611.60
5.3.100.0230.04511.30
5.3.90.0200.04711.31
5.3.80.0110.02511.16
5.3.70.0260.05811.25
5.3.60.0180.04811.21
5.3.50.0100.02311.24
5.3.40.0240.05711.24
5.3.30.0100.02411.24
5.3.20.0340.06411.02
5.3.10.0180.02410.94
5.3.00.0220.04510.87
5.2.170.0080.0229.30
5.2.160.0080.0209.42
5.2.150.0140.0169.35
5.2.140.0190.0439.30
5.2.130.0220.0359.29
5.2.120.0140.0249.28
5.2.110.0200.0609.29
5.2.100.0230.0429.38
5.2.90.0170.0449.28
5.2.80.0100.0209.28
5.2.70.0140.0639.28
5.2.60.0090.0199.26
5.2.50.0270.0349.24
5.2.40.0160.0429.25
5.2.30.0100.0179.21
5.2.20.0160.0429.21
5.2.10.0070.0199.17
5.2.00.0090.0169.10
5.1.60.0090.0158.74
5.1.50.0080.0168.74
5.1.40.0040.0188.74
5.1.30.0060.0208.91
5.1.20.0150.0408.92
5.1.10.0070.0178.78
5.1.00.0040.0228.78
5.0.50.0050.0148.02
5.0.40.0050.0137.95
5.0.30.0070.0197.86
5.0.20.0080.0127.84
5.0.10.0170.0327.83
5.0.00.0060.0197.83
4.4.90.0060.0097.10
4.4.80.0060.0117.09
4.4.70.0030.0137.09
4.4.60.0060.0107.09
4.4.50.0100.0077.10
4.4.40.0060.0167.06
4.4.30.0040.0107.09
4.4.20.0150.0317.13
4.4.10.0090.0097.13
4.4.00.0040.0187.09
4.3.110.0050.0097.04
4.3.100.0050.0097.04
4.3.90.0040.0117.03
4.3.80.0100.0417.00
4.3.70.0050.0117.03
4.3.60.0070.0097.02
4.3.50.0050.0117.02
4.3.40.0200.0316.98
4.3.30.0020.0116.35
4.3.20.0040.0126.35
4.3.10.0060.0106.33
4.3.00.0070.0137.83

preferences:
30.51 ms | 401 KiB | 5 Q