3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A{ public $null = null; } $a = new A; $item = 'null'; var_dump(isset($a->$item)); var_dump(array_key_exists($item, $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)
8.3.40.0040.01118.84
8.3.30.0070.00718.70
8.3.20.0040.00418.65
8.3.10.0050.00318.73
8.3.00.0040.00419.38
8.2.170.0070.00722.96
8.2.160.0040.01118.64
8.2.150.0090.00024.18
8.2.140.0130.00624.66
8.2.130.0000.00826.16
8.2.120.0080.00019.66
8.2.110.0140.00020.53
8.2.100.0080.00419.25
8.2.90.0080.00317.88
8.2.80.0030.00518.97
8.2.70.0030.00617.63
8.2.60.0030.00618.04
8.2.50.0030.00518.07
8.2.40.0030.00519.60
8.2.30.0000.00917.86
8.2.20.0030.00717.77
8.2.10.0000.00817.68
8.2.00.0070.00317.79
8.1.270.0050.00323.99
8.1.260.0030.00526.35
8.1.250.0000.00828.09
8.1.240.0120.00623.70
8.1.230.0070.00422.68
8.1.220.0080.00017.74
8.1.210.0030.00618.77
8.1.200.0000.00917.35
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0040.00418.79
8.1.160.0040.00419.11
8.1.150.0030.00618.50
8.1.140.0070.00017.42
8.1.130.0000.00719.30
8.1.120.0070.00017.50
8.1.110.0040.00417.42
8.1.100.0000.00717.44
8.1.90.0040.00417.36
8.1.80.0000.00717.42
8.1.70.0000.00717.44
8.1.60.0040.00417.52
8.1.50.0050.00217.46
8.1.40.0060.00317.46
8.1.30.0030.00617.65
8.1.20.0040.00817.64
8.1.10.0000.00717.50
8.1.00.0000.00817.41
8.0.300.0050.00318.77
8.0.290.0050.00216.75
8.0.280.0040.00418.60
8.0.270.0030.00317.25
8.0.260.0000.00716.88
8.0.250.0040.00416.91
8.0.240.0050.00217.00
8.0.230.0050.00316.89
8.0.220.0030.00316.84
8.0.210.0030.00316.84
8.0.200.0050.00316.96
8.0.190.0070.00016.89
8.0.180.0030.00916.87
8.0.170.0000.00817.00
8.0.160.0070.00016.96
8.0.150.0000.00816.93
8.0.140.0000.00816.80
8.0.130.0030.00313.33
8.0.120.0100.00016.84
8.0.110.0040.00416.82
8.0.100.0030.00517.04
8.0.90.0030.00316.89
8.0.80.0060.00816.91
8.0.70.0040.00417.06
8.0.60.0030.00516.74
8.0.50.0000.00916.94
8.0.30.0130.00816.95
8.0.20.0140.00617.20
8.0.10.0000.00717.09
8.0.00.0180.00416.74
7.4.330.0000.00513.00
7.4.320.0000.00716.60
7.4.300.0030.00316.40
7.4.290.0000.00916.50
7.4.280.0050.00316.34
7.4.270.0070.00016.59
7.4.260.0040.00413.37
7.4.250.0030.00616.59
7.4.240.0030.00316.43
7.4.230.0040.00416.23
7.4.220.0120.00616.38
7.4.210.0070.01416.53
7.4.200.0030.00316.38
7.4.190.0030.00516.73
7.4.160.0100.01316.65
7.4.150.0130.00616.52
7.4.140.0160.00017.86
7.4.130.0120.00616.48
7.4.120.0130.00316.56
7.4.110.0040.01716.59
7.4.100.0070.01016.68
7.4.90.0070.01216.48
7.4.80.0070.01019.39
7.4.70.0170.00516.56
7.4.60.0100.00716.35
7.4.50.0030.00316.61
7.4.40.0060.01216.30
7.4.30.0120.00616.67
7.4.00.0110.00414.99
7.3.330.0000.00713.06
7.3.320.0050.00213.01
7.3.310.0030.00516.26
7.3.300.0040.00416.12
7.3.290.0070.00916.26
7.3.280.0100.01016.15
7.3.270.0100.00716.29
7.3.260.0080.00816.72
7.3.240.0200.00316.52
7.3.230.0110.00716.48
7.3.210.0030.01316.43
7.3.200.0100.00716.39
7.3.190.0170.00716.59
7.3.180.0060.01216.46
7.3.170.0120.00616.49
7.3.160.0100.01316.61
7.3.120.0060.00914.66
7.3.110.0130.00614.84
7.3.100.0040.01514.98
7.3.90.0030.01314.94
7.3.80.0090.00614.86
7.3.70.0100.00014.81
7.3.60.0060.00614.68
7.3.50.0040.01114.71
7.3.40.0060.00314.81
7.3.30.0070.00714.67
7.3.20.0000.01116.59
7.3.10.0000.01416.64
7.3.00.0000.01416.48
7.2.330.0110.00716.32
7.2.320.0060.01616.54
7.2.310.0120.00916.39
7.2.300.0070.01016.37
7.2.290.0110.00916.48
7.2.250.0000.01714.82
7.2.240.0100.00714.90
7.2.230.0030.01215.14
7.2.220.0110.00314.71
7.2.210.0000.00914.66
7.2.200.0060.00614.93
7.2.190.0050.00514.66
7.2.180.0040.00415.11
7.2.170.0070.00714.99
7.2.160.0000.00914.83
7.2.150.0040.00816.89
7.2.140.0000.01516.61
7.2.130.0100.00716.94
7.2.120.0070.00717.02
7.2.110.0040.01116.58
7.2.100.0080.00316.90
7.2.90.0100.01016.98
7.2.80.0050.01016.70
7.2.70.0130.00316.59
7.2.60.0060.00617.00
7.2.50.0000.01616.90
7.2.40.0040.00716.84
7.2.30.0070.01016.73
7.2.20.0090.00616.95
7.2.10.0070.01116.83
7.2.00.0060.00618.16
7.1.330.0130.00315.71
7.1.320.0060.01015.77
7.1.310.0060.00615.69
7.1.300.0100.00315.89
7.1.290.0100.00315.78
7.1.280.0060.00915.46
7.1.270.0100.00315.75
7.1.260.0030.00715.59
7.1.250.0080.00315.83
7.1.240.0030.01315.55
7.1.230.0100.00315.91
7.1.220.0060.00915.90
7.1.210.0140.00015.69
7.1.200.0080.00415.74
7.1.190.0130.00015.42
7.1.180.0060.00915.71
7.1.170.0100.00715.78
7.1.160.0030.01415.74
7.1.150.0080.00815.74
7.1.140.0080.00615.73
7.1.130.0000.01215.89
7.1.120.0000.01415.85
7.1.110.0040.01115.65
7.1.100.0000.01415.45
7.1.90.0070.00315.62
7.1.80.0080.00815.81
7.1.70.0050.01016.56
7.1.60.0080.01017.50
7.1.50.0070.01116.21
7.1.40.0060.00915.65
7.1.30.0000.01515.63
7.1.20.0030.01015.52
7.1.10.0030.00615.73
7.1.00.0040.02219.12
7.0.330.0000.01715.28
7.0.320.0110.00415.45
7.0.310.0040.00415.33
7.0.300.0100.00715.32
7.0.290.0070.00315.29
7.0.280.0070.01015.46
7.0.270.0110.00315.36
7.0.260.0110.00415.15
7.0.250.0130.00615.48
7.0.240.0090.00615.61
7.0.230.0030.00715.24
7.0.220.0070.00715.07
7.0.210.0030.01015.13
7.0.200.0050.00515.79
7.0.190.0060.00315.43
7.0.180.0130.00315.46
7.0.170.0070.01115.46
7.0.160.0040.00715.36
7.0.150.0110.00015.34
7.0.140.0060.03818.57
7.0.130.0040.00715.14
7.0.120.0050.02218.65
7.0.110.0060.00315.34
7.0.100.0000.01515.29
7.0.90.0070.00415.43
7.0.80.0080.00015.44
7.0.70.0030.01015.25
7.0.60.0130.04517.70
7.0.50.0080.03616.56
7.0.40.0030.03616.80
7.0.30.0110.04216.73
7.0.20.0080.03516.86
7.0.10.0020.05416.86
7.0.00.0050.02516.67
5.6.400.0080.00814.50
5.6.390.0030.01314.34
5.6.380.0060.01214.48
5.6.370.0060.00614.57
5.6.360.0090.00614.35
5.6.350.0070.00714.38
5.6.340.0060.01314.51
5.6.330.0030.01114.55
5.6.320.0000.01914.15
5.6.310.0030.01314.66
5.6.300.0030.01414.50
5.6.290.0070.00714.03
5.6.280.0060.03817.54
5.6.270.0070.01014.07
5.6.260.0080.00414.30
5.6.250.0100.00714.25
5.6.240.0060.00914.45
5.6.230.0040.01114.24
5.6.220.0040.00714.25
5.6.210.0090.03417.56
5.6.200.0060.04616.30
5.6.190.0080.04017.37
5.6.180.0050.04717.42
5.6.170.0050.03817.53
5.6.160.0080.03417.52
5.6.150.0120.04117.17
5.6.140.0050.04017.38
5.6.130.0070.02317.19
5.6.120.0050.02817.16
5.6.110.0070.02417.35
5.6.100.0050.03317.38
5.6.90.0060.04517.39
5.6.80.0080.04617.09
5.6.70.0120.03717.07
5.6.60.0080.04017.05
5.6.50.0050.02417.02
5.6.40.0030.04216.87
5.6.30.0030.02716.90
5.6.20.0090.03617.00
5.6.10.0050.04216.94
5.6.00.0100.02516.97
5.5.380.0070.01013.83
5.5.370.0070.00714.40
5.5.360.0000.01414.07
5.5.350.0160.04517.17
5.5.340.0020.02415.90
5.5.330.0080.04517.26
5.5.320.0060.02517.23
5.5.310.0050.04717.05
5.5.300.0090.02817.19
5.5.290.0020.02817.06
5.5.280.0080.03316.94
5.5.270.0060.02817.26
5.5.260.0020.03416.97
5.5.250.0100.04416.97
5.5.240.0000.03716.75
5.5.230.0030.03316.91
5.5.220.0100.04016.91
5.5.210.0000.03116.82
5.5.200.0050.04516.71
5.5.190.0030.02716.66
5.5.180.0090.03516.75
5.5.170.0070.00414.04
5.5.160.0030.02516.72
5.5.150.0080.02216.97
5.5.140.0080.03816.99
5.5.130.0080.04016.79
5.5.120.0090.04616.92
5.5.110.0030.04516.79
5.5.100.0060.04116.73
5.5.90.0060.03516.72
5.5.80.0090.03416.84
5.5.70.0070.03217.02
5.5.60.0050.04416.62
5.5.50.0070.03516.80
5.5.40.0030.04316.62
5.5.30.0090.02316.63
5.5.20.0050.02516.66
5.5.10.0040.02616.55
5.5.00.0080.03316.66
5.4.450.0060.03016.05
5.4.440.0100.03715.86
5.4.430.0090.02515.92
5.4.420.0080.03815.99
5.4.410.0020.02415.94
5.4.400.0030.04015.89
5.4.390.0080.04115.89
5.4.380.0080.02315.88
5.4.370.0080.04015.80
5.4.360.0060.04515.89
5.4.350.0070.03015.89
5.4.340.0020.02515.71
5.4.330.0030.00712.54
5.4.320.0030.02315.71
5.4.310.0040.02115.84
5.4.300.0020.04715.89
5.4.290.0060.02315.80
5.4.280.0070.04115.89
5.4.270.0030.03515.70
5.4.260.0030.03615.87
5.4.250.0060.03915.88
5.4.240.0030.04515.80
5.4.230.0030.04215.84
5.4.220.0030.04015.69
5.4.210.0020.02815.86
5.4.200.0070.03715.84
5.4.190.0110.03915.83
5.4.180.0100.04015.75
5.4.170.0090.03915.69
5.4.160.0080.03015.79
5.4.150.0030.02515.83
5.4.140.0040.02814.52
5.4.130.0120.02314.39
5.4.120.0050.02714.51
5.4.110.0080.02814.46
5.4.100.0030.03214.52
5.4.90.0060.03314.48
5.4.80.0000.04514.40
5.4.70.0080.03814.47
5.4.60.0100.03214.46
5.4.50.0050.02014.45
5.4.40.0020.02514.47
5.4.30.0050.02714.55
5.4.20.0070.01714.40
5.4.10.0070.01714.40
5.4.00.0050.02114.22
5.3.290.0030.02213.61
5.3.280.0080.04113.57
5.3.270.0050.03013.64
5.3.260.0050.02713.56
5.3.250.0070.01813.61
5.3.240.0050.04313.53
5.3.230.0050.04113.58
5.3.220.0050.04613.55
5.3.210.0030.03513.57
5.3.200.0050.03113.56
5.3.190.0020.04113.55
5.3.180.0070.03813.55
5.3.170.0030.03213.54
5.3.160.0020.03713.55
5.3.150.0020.04013.54
5.3.140.0020.02413.58
5.3.130.0040.02613.56
5.3.120.0020.02713.56
5.3.110.0070.03713.54
5.3.100.0100.03413.29
5.3.90.0080.03513.27
5.3.80.0130.03013.31
5.3.70.0080.02813.28
5.3.60.0050.03613.28
5.3.50.0050.03813.27
5.3.40.0070.03813.27
5.3.30.0030.02213.24
5.3.20.0100.03113.07
5.3.10.0030.02713.07
5.3.00.0020.02913.16
5.2.170.0030.06711.30
5.2.160.0070.06311.10
5.2.150.0130.03711.10
5.2.140.0070.06011.13
5.2.130.0070.03311.02
5.2.120.0030.06311.08
5.2.110.0000.03711.09
5.2.100.0000.03311.25
5.2.90.0130.04311.17
5.2.80.0000.04010.97
5.2.70.0030.03311.05
5.2.60.0070.03311.04
5.2.50.0070.05711.19
5.2.40.0070.06011.00
5.2.30.0070.05011.02
5.2.20.0030.04010.92
5.2.10.0000.04710.89
5.2.00.0030.05710.85
5.1.60.0100.04710.05
5.1.50.0130.0409.90
5.1.40.0000.03010.11
5.1.30.0030.03010.25
5.1.20.0070.02310.35
5.1.10.0130.04710.13
5.1.00.0130.03010.09
5.0.50.0000.0378.46
5.0.40.0030.0438.45
5.0.30.0000.0578.17
5.0.20.0030.0438.10
5.0.10.0000.0278.07
5.0.00.0000.0608.31
4.4.90.0030.0337.27
4.4.80.0070.0137.27
4.4.70.0070.0107.27
4.4.60.0030.0207.27
4.4.50.0000.0277.27
4.4.40.0100.0477.27
4.4.30.0000.0337.27
4.4.20.0000.0407.27
4.4.10.0000.0207.27
4.4.00.0000.0307.27
4.3.110.0030.0277.27
4.3.100.0000.0337.27
4.3.90.0000.0307.27
4.3.80.0030.0377.27
4.3.70.0000.0407.27
4.3.60.0000.0337.27
4.3.50.0000.0407.27
4.3.40.0070.0507.27
4.3.30.0070.0337.27
4.3.20.0000.0377.27
4.3.10.0030.0237.27
4.3.00.0030.0307.27

preferences:
52.7 ms | 400 KiB | 5 Q