3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => null); var_dump(isset($a['a'])); var_dump(array_key_exists('a', $a));

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)
8.3.60.0120.00918.56
8.3.50.0070.00721.21
8.3.40.0060.00918.61
8.3.30.0090.00920.32
8.3.20.0030.01020.42
8.3.10.0000.00821.82
8.3.00.0040.00422.51
8.2.180.0060.00916.48
8.2.170.0090.00622.96
8.2.160.0030.01020.58
8.2.150.0080.00024.18
8.2.140.0090.00624.66
8.2.130.0110.00326.16
8.2.120.0060.00319.69
8.2.110.0090.00021.07
8.2.100.0040.00817.83
8.2.90.0030.00619.11
8.2.80.0050.00317.97
8.2.70.0040.00417.49
8.2.60.0000.00818.03
8.2.50.0030.00618.07
8.2.40.0040.00418.34
8.2.30.0000.00718.11
8.2.20.0040.00417.55
8.2.10.0000.00717.66
8.2.00.0040.00417.57
8.1.280.0070.01425.92
8.1.270.0040.01120.36
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0080.00021.28
8.1.230.0080.00317.42
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0030.00717.35
8.1.190.0050.00317.10
8.1.180.0040.00418.80
8.1.170.0030.00518.59
8.1.160.0050.00222.04
8.1.150.0030.00718.47
8.1.140.0000.00917.26
8.1.130.0030.00317.70
8.1.120.0000.00717.36
8.1.110.0040.00417.34
8.1.100.0000.00717.29
8.1.90.0030.00417.39
8.1.80.0050.00217.34
8.1.70.0030.00317.28
8.1.60.0030.00617.50
8.1.50.0020.00517.37
8.1.40.0040.00417.52
8.1.30.0040.00417.58
8.1.20.0040.00417.61
8.1.10.0020.00517.48
8.1.00.0050.00217.43
8.0.300.0000.00718.77
8.0.290.0040.00416.58
8.0.280.0000.00718.31
8.0.270.0000.00717.14
8.0.260.0030.00516.67
8.0.250.0030.00316.77
8.0.240.0050.00316.78
8.0.230.0040.00416.80
8.0.220.0000.00716.73
8.0.210.0030.00316.86
8.0.200.0040.00416.90
8.0.190.0000.00716.82
8.0.180.0050.00216.81
8.0.170.0000.00816.75
8.0.160.0030.00316.73
8.0.150.0040.00416.80
8.0.140.0000.00716.74
8.0.130.0050.00013.27
8.0.120.0030.00616.70
8.0.110.0000.00716.82
8.0.100.0030.00316.82
8.0.90.0080.00016.89
8.0.80.0030.01316.84
8.0.70.0040.00416.88
8.0.60.0040.00416.73
8.0.50.0000.00816.63
8.0.30.0080.01416.93
8.0.20.0110.00717.40
8.0.10.0060.00316.96
8.0.00.0140.00716.78
7.4.330.0050.00015.00
7.4.320.0030.00316.40
7.4.300.0000.00616.58
7.4.290.0030.00316.54
7.4.280.0070.00016.59
7.4.270.0070.00016.56
7.4.260.0000.00816.47
7.4.250.0000.00716.60
7.4.240.0050.00216.54
7.4.230.0000.00716.40
7.4.220.0230.00316.67
7.4.210.0060.01016.55
7.4.200.0000.00716.66
7.4.190.0070.00016.44
7.4.160.0080.00816.53
7.4.150.0030.01717.40
7.4.140.0090.01217.86
7.4.130.0080.01016.49
7.4.120.0110.00616.48
7.4.110.0120.00616.46
7.4.100.0120.00416.29
7.4.90.0090.00916.57
7.4.80.0110.00619.39
7.4.70.0180.00316.41
7.4.60.0090.00616.62
7.4.50.0040.00016.34
7.4.40.0100.00722.77
7.4.30.0080.01416.43
7.4.00.0100.00715.08
7.3.330.0050.00012.94
7.3.320.0050.00012.91
7.3.310.0000.00616.12
7.3.300.0070.00016.09
7.3.290.0000.01416.15
7.3.280.0060.00816.24
7.3.270.0030.02017.40
7.3.260.0120.01216.41
7.3.250.0110.00716.17
7.3.240.0090.01316.43
7.3.230.0170.00016.39
7.3.210.0060.01016.30
7.3.200.0060.00919.39
7.3.190.0130.00516.21
7.3.180.0100.00616.07
7.3.170.0140.00716.27
7.3.160.0070.01016.21
7.3.120.0040.01414.66
7.3.00.0090.00616.57
7.2.330.0120.00616.59
7.2.320.0100.00716.28
7.2.310.0140.00716.25
7.2.300.0090.00616.47
7.2.290.0070.01016.53
7.2.130.0040.01116.72
7.2.120.0040.00816.57
7.2.110.0000.01616.58
7.2.100.0080.00816.75
7.2.90.0070.01016.50
7.2.80.0000.01216.55
7.2.70.0070.01016.57
7.2.60.0060.00916.60
7.2.50.0000.01516.46
7.2.40.0000.01016.29
7.2.30.0060.00916.75
7.2.20.0030.01216.94
7.2.10.0040.01516.77
7.2.00.0050.01217.79
7.1.250.0040.01115.73
7.1.240.0060.01015.68
7.1.230.0070.00715.69
7.1.220.0080.00315.75
7.1.210.0070.00715.79
7.1.200.0020.00615.73
7.1.190.0060.00315.68
7.1.180.0100.00315.41
7.1.170.0100.00315.76
7.1.160.0100.00315.85
7.1.150.0080.00015.67
7.1.140.0000.01215.68
7.1.130.0000.01315.62
7.1.120.0040.01015.44
7.1.110.0030.01015.74
7.1.100.0080.00516.74
7.1.90.0040.00415.62
7.1.80.0000.00715.52
7.1.70.0040.00616.25
7.1.60.0070.00917.41
7.1.50.0040.00916.19
7.1.40.0060.00615.76
7.1.30.0120.00015.66
7.1.20.0040.00815.72
7.1.10.0070.00415.44
7.1.00.0020.03519.05
7.0.330.0120.00015.17
7.0.320.0000.01315.51
7.0.310.0120.00315.50
7.0.300.0030.01015.38
7.0.290.0070.00715.54
7.0.280.0030.01415.06
7.0.270.0080.00415.38
7.0.260.0060.00315.12
7.0.250.0000.01315.36
7.0.240.0030.00615.56
7.0.230.0080.00315.46
7.0.220.0090.00315.51
7.0.210.0030.01015.36
7.0.200.0050.00516.05
7.0.190.0000.01415.27
7.0.180.0110.00415.36
7.0.170.0050.00515.48
7.0.160.0030.00715.45
7.0.150.0060.00315.25
7.0.140.0030.04018.73
7.0.130.0050.00515.22
7.0.120.0090.00615.24
7.0.110.0070.00415.48
7.0.100.0080.00315.23
7.0.90.0000.01415.46
7.0.80.0040.00815.37
7.0.70.0040.00415.23
7.0.60.0020.04217.48
7.0.50.0100.04016.51
7.0.40.0060.04216.68
7.0.30.0180.03016.73
7.0.20.0130.05116.76
7.0.10.0110.04416.79
7.0.00.0030.02516.69
5.6.380.0000.01714.30
5.6.370.0030.00913.91
5.6.360.0090.00614.49
5.6.350.0030.01014.52
5.6.340.0070.00714.22
5.6.330.0060.00613.88
5.6.320.0000.01214.02
5.6.310.0060.00614.20
5.6.300.0070.00714.21
5.6.290.0030.01314.04
5.6.280.0030.04017.53
5.6.270.0040.00414.00
5.6.260.0060.00314.09
5.6.250.0100.00314.32
5.6.240.0000.01214.04
5.6.230.0060.00314.21
5.6.220.0100.00314.25
5.6.210.0130.03717.53
5.6.200.0050.04316.12
5.6.190.0070.04317.45
5.6.180.0200.03817.51
5.6.170.0180.02817.40
5.6.160.0080.04517.21
5.6.150.0110.04016.17
5.6.140.0130.03016.15
5.6.130.0050.03216.16
5.6.120.0080.02217.60
5.6.110.0090.03917.54
5.6.100.0090.04117.54
5.6.90.0070.04517.75
5.6.80.0080.03017.24
5.6.70.0040.01114.01
5.6.60.0070.00314.17
5.6.50.0030.00714.23
5.6.40.0030.00713.92
5.6.30.0000.01213.99
5.6.20.0000.01114.08
5.6.10.0040.00414.06
5.6.00.0080.00314.21
5.5.380.0030.00711.18
5.5.370.0060.00611.18
5.5.360.0070.00311.18
5.5.350.0190.03715.83
5.5.340.0080.04014.59
5.5.330.0130.02315.65
5.5.320.0230.03315.74
5.5.310.0100.02715.74
5.5.300.0050.03814.55
5.5.290.0020.03414.56
5.5.280.0100.02515.95
5.5.270.0040.03416.06
5.5.260.0070.04315.96
5.5.250.0060.04015.83
5.5.240.0050.03615.60
5.5.230.0040.00711.18
5.5.220.0020.00511.18
5.5.210.0060.00311.18
5.5.200.0030.00911.18
5.5.190.0070.00311.18
5.5.180.0000.00911.18
5.5.170.0000.00711.18
5.5.160.0070.00311.18
5.5.150.0030.00611.18
5.5.140.0000.01011.18
5.5.130.0030.01011.18
5.5.120.0060.00611.18
5.5.110.0030.00311.18
5.5.100.0040.00811.18
5.5.90.0080.00311.18
5.5.80.0040.01111.18
5.5.70.0070.00411.18
5.5.60.0090.00011.18
5.5.50.0040.00811.18
5.5.40.0040.00711.18
5.5.30.0070.00011.18
5.5.20.0090.00311.18
5.5.10.0000.00611.18
5.5.00.0000.00911.18
5.4.450.0230.02815.23
5.4.440.0480.03615.40
5.4.430.0370.03215.33
5.4.420.0420.02515.32
5.4.410.0530.03115.33
5.4.400.0390.03015.21
5.4.390.0430.03515.00
5.4.380.0150.02814.91
5.4.370.0050.02014.86
5.4.360.0030.02214.87
5.4.350.0040.02511.57
5.4.340.0040.02611.57
5.4.330.0030.00311.18
5.4.320.0060.02011.81
5.4.310.0050.02211.81
5.4.300.0070.02711.81
5.4.290.0060.02111.81
5.4.280.0090.01811.76
5.4.270.0070.02811.76
5.4.260.0050.03311.76
5.4.250.0100.03014.91
5.4.240.0070.02714.90
5.4.230.0080.02515.08
5.4.220.0050.03015.10
5.4.210.0080.03014.94
5.4.200.0070.03214.95
5.4.190.0050.03215.00
5.4.180.0100.02215.02
5.4.170.0030.03215.08
5.4.160.0080.02914.93
5.4.150.0130.02315.00
5.4.140.0040.03113.72
5.4.130.0060.02613.72
5.4.120.0060.03013.80
5.4.110.0030.03013.76
5.4.100.0070.03013.73
5.4.90.0050.02713.83
5.4.80.0130.02613.83
5.4.70.0040.03213.78
5.4.60.0090.02713.77
5.4.50.0050.02513.67
5.4.40.0070.02813.70
5.4.30.0090.02413.74
5.4.20.0080.02513.81
5.4.10.0030.03013.76
5.4.00.0080.02513.51
5.3.290.0060.02311.99
5.3.280.0040.02712.88
5.3.270.0060.02812.89
5.3.260.0050.02812.93
5.3.250.0080.02512.89
5.3.240.0110.02412.84
5.3.230.0030.03012.81
5.3.220.0050.02912.95
5.3.210.0080.02712.87
5.3.200.0030.03112.72
5.3.190.0040.03412.87
5.3.180.0050.02912.94
5.3.170.0080.02312.82
5.3.160.0070.02712.88
5.3.150.0080.02712.71
5.3.140.0090.02512.80
5.3.130.0020.03212.74
5.3.120.0070.03812.86
5.3.110.0140.02012.82
5.3.100.0070.03712.49
5.3.90.0010.03112.59
5.3.80.0070.02512.48
5.3.70.0120.03112.48
5.3.60.0100.02512.47
5.3.50.0040.02912.53
5.3.40.0040.02912.49
5.3.30.0020.03112.47
5.3.20.0110.02312.46
5.3.10.0000.03212.34
5.3.00.0020.03112.34
5.2.170.0050.02111.17
5.2.160.0090.01811.21
5.2.150.0050.02311.17
5.2.140.0060.02111.12
5.2.130.0080.02711.08
5.2.120.0060.02011.21
5.2.110.0030.02511.14
5.2.100.0030.02211.09
5.2.90.0060.02011.08
5.2.80.0030.02511.14
5.2.70.0050.02111.10
5.2.60.0060.02711.06
5.2.50.0050.02311.04
5.2.40.0050.02211.09
5.2.30.0030.03011.04
5.2.20.0000.02611.14
5.2.10.0020.02511.09
5.2.00.0010.02510.97
5.1.60.0030.02510.61
5.1.50.0020.02110.54
5.1.40.0090.01310.60
5.1.30.0000.02210.78
5.1.20.0000.02210.79
5.1.10.0090.01510.64
5.1.00.0030.02610.54
5.0.50.0020.0229.78
5.0.40.0020.0189.82
5.0.30.0050.0239.77
5.0.20.0030.0139.77
5.0.10.0030.0169.75
5.0.00.0040.0249.64
4.4.90.0080.0089.29
4.4.80.0010.0139.29
4.4.70.0050.0109.29
4.4.60.0040.0109.29
4.4.50.0020.0139.29
4.4.40.0050.0179.29
4.4.30.0000.0159.29
4.4.20.0020.0139.29
4.4.10.0000.0189.29
4.4.00.0020.0229.29
4.3.110.0030.0109.29
4.3.100.0020.0209.29
4.3.90.0000.0149.29
4.3.80.0000.0219.29
4.3.70.0010.0139.29
4.3.60.0030.0129.29
4.3.50.0030.0139.29
4.3.40.0050.0209.29
4.3.30.0020.0129.29
4.3.20.0050.0109.29
4.3.10.0010.0139.29
4.3.00.0020.0139.16

preferences:
43.35 ms | 401 KiB | 5 Q