3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'this is a string'; var_dump($string['check']); var_dump(isset($string['check'])); var_dump(isset($string['check'][0]));

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)
8.3.60.0100.00618.32
8.3.50.0100.00521.08
8.3.40.0160.00018.84
8.3.30.0070.00718.71
8.3.20.0040.00418.73
8.3.10.0050.00320.33
8.3.00.0000.00823.48
8.2.180.0100.01016.71
8.2.170.0000.01422.96
8.2.160.0070.00720.38
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0000.00819.36
8.2.110.0050.00520.95
8.2.100.0090.00317.78
8.2.90.0080.00017.84
8.2.80.0070.00018.09
8.2.70.0040.00417.75
8.2.60.0030.00617.92
8.2.50.0000.00818.10
8.2.40.0060.00322.32
8.2.30.0070.00017.93
8.2.20.0040.00417.69
8.2.10.0000.00717.61
8.2.00.0000.00817.65
8.1.280.0040.01125.92
8.1.270.0040.00422.19
8.1.260.0150.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00319.15
8.1.230.0100.00017.77
8.1.220.0080.00017.76
8.1.210.0050.00318.84
8.1.200.0040.00417.35
8.1.190.0040.00417.13
8.1.180.0040.00418.10
8.1.170.0080.00018.65
8.1.160.0000.00718.89
8.1.150.0040.00418.78
8.1.140.0040.00417.32
8.1.130.0040.00417.82
8.1.120.0000.00717.30
8.1.110.0000.00817.34
8.1.100.0040.00417.23
8.1.90.0050.00217.32
8.1.80.0080.00017.43
8.1.70.0000.00717.36
8.1.60.0060.00317.45
8.1.50.0040.00417.43
8.1.40.0060.00317.39
8.1.30.0040.00417.60
8.1.20.0060.00317.53
8.1.10.0000.00817.57
8.1.00.0000.00817.57
8.0.300.0080.00019.98
8.0.290.0040.00416.75
8.0.280.0030.00318.27
8.0.270.0000.00717.23
8.0.260.0060.00016.75
8.0.250.0080.00016.91
8.0.240.0000.00716.93
8.0.230.0000.00716.93
8.0.220.0030.00316.95
8.0.210.0040.00416.85
8.0.200.0000.00716.98
8.0.190.0040.00416.89
8.0.180.0000.00816.96
8.0.170.0030.00616.87
8.0.160.0000.00716.91
8.0.150.0070.00316.75
8.0.140.0080.00016.80
8.0.130.0030.00313.29
8.0.120.0080.00016.88
8.0.110.0050.00216.83
8.0.100.0000.00816.89
8.0.90.0000.00716.79
8.0.80.0110.00416.87
8.0.70.0000.00716.88
8.0.60.0000.00716.90
8.0.50.0000.00816.90
8.0.30.0120.00917.02
8.0.20.0120.00617.40
8.0.10.0040.00416.84
8.0.00.0130.00516.74
7.4.330.0030.00314.65
7.4.320.0000.00616.45
7.4.300.0030.00316.37
7.4.290.0040.00416.43
7.4.280.0080.00016.56
7.4.270.0080.00016.39
7.4.260.0000.00613.14
7.4.250.0050.00316.32
7.4.240.0030.00716.48
7.4.230.0070.00016.43
7.4.220.0030.01316.32
7.4.210.0090.00616.42
7.4.200.0070.00016.34
7.4.190.0000.00716.69
7.4.160.0100.00616.32
7.4.150.0120.00617.40
7.4.140.0070.00917.86
7.4.130.0110.00516.43
7.4.120.0110.00916.49
7.4.110.0120.00416.48
7.4.100.0090.00916.36
7.4.90.0060.01716.46
7.4.80.0030.01319.04
7.4.70.0120.00616.35
7.4.60.0070.01016.38
7.4.50.0030.00616.39
7.4.40.0040.00822.27
7.4.30.0130.01016.66
7.4.10.0000.02014.74
7.4.00.0090.00914.94
7.3.330.0000.00513.11
7.3.320.0030.00313.09
7.3.310.0030.00516.16
7.3.300.0030.00316.32
7.3.290.0060.00816.46
7.3.280.0100.00516.43
7.3.270.0100.00617.40
7.3.260.0090.01318.24
7.3.250.0110.00816.34
7.3.240.0090.00616.64
7.3.230.0060.01216.39
7.3.210.0060.00916.41
7.3.200.0130.00419.39
7.3.190.0120.00616.31
7.3.180.0100.01016.19
7.3.170.0060.00916.29
7.3.160.0050.01616.57
7.3.130.0060.00914.78
7.3.120.0030.01014.75
7.3.110.0070.01314.73
7.3.100.0000.01514.77
7.3.90.0070.00315.05
7.3.80.0070.00714.71
7.3.70.0090.00614.67
7.3.60.0080.00414.80
7.3.50.0070.00714.69
7.3.40.0070.00414.57
7.3.30.0080.00414.84
7.3.20.0090.00616.59
7.3.10.0090.00316.83
7.3.00.0060.00616.64
7.2.330.0090.00916.25
7.2.320.0130.00316.48
7.2.310.0100.01316.32
7.2.300.0030.01316.30
7.2.290.0100.01316.38
7.2.260.0060.01214.97
7.2.250.0070.01115.18
7.2.240.0030.01014.84
7.2.230.0100.01015.19
7.2.220.0060.00915.12
7.2.210.0060.00314.92
7.2.200.0040.01214.87
7.2.190.0000.01415.00
7.2.180.0070.00314.89
7.2.170.0070.00314.95
7.2.160.0030.01414.73
7.2.150.0100.00716.76
7.2.140.0110.00016.85
7.2.130.0070.00716.77
7.2.120.0030.01016.67
7.2.110.0100.00716.61
7.2.100.0030.00716.74
7.2.90.0000.01216.54
7.2.80.0100.01016.95
7.2.70.0080.00816.73
7.2.60.0060.00916.90
7.2.50.0110.00316.77
7.2.40.0120.00316.76
7.2.30.0060.00616.73
7.2.20.0000.01116.97
7.2.10.0120.00616.85
7.2.00.0030.00918.15
7.1.330.0090.00615.65
7.1.320.0040.01215.87
7.1.310.0060.00615.90
7.1.300.0070.00715.80
7.1.290.0060.00315.80
7.1.280.0000.01415.73
7.1.270.0040.01215.72
7.1.260.0030.00615.55
7.1.250.0140.00015.89
7.1.240.0060.00615.78
7.1.230.0070.01115.74
7.1.220.0060.00315.70
7.1.210.0070.00415.74
7.1.200.0060.00615.72
7.1.190.0080.00915.91
7.1.180.0000.01915.62
7.1.170.0000.01415.93
7.1.160.0070.00715.54
7.1.150.0100.00615.93
7.1.140.0000.00915.59
7.1.130.0070.00715.66
7.1.120.0000.00815.83
7.1.110.0070.00715.98
7.1.100.0080.00516.82
7.1.90.0060.00615.92
7.1.80.0090.00915.93
7.1.70.0060.00716.38
7.1.60.0030.01417.52
7.1.50.0070.00916.45
7.1.40.0110.00415.80
7.1.30.0000.01315.94
7.1.20.0030.01715.70
7.1.10.0070.00715.92
7.1.00.0050.02719.12
7.0.330.0000.00915.46
7.0.320.0060.00315.30
7.0.310.0000.00815.05
7.0.300.0120.00015.12
7.0.290.0000.01215.30
7.0.280.0100.00315.58
7.0.270.0090.00615.32
7.0.260.0060.00615.32
7.0.250.0060.00615.50
7.0.240.0060.00915.40
7.0.230.0030.00815.28
7.0.220.0100.00315.31
7.0.210.0040.00815.36
7.0.200.0040.00715.97
7.0.190.0100.00315.28
7.0.180.0100.00015.48
7.0.170.0030.00615.25
7.0.160.0100.00915.36
7.0.150.0030.01015.28
7.0.140.0030.04018.65
7.0.130.0150.00015.52
7.0.120.0030.01015.14
7.0.110.0030.00615.41
7.0.100.0090.00615.07
7.0.90.0060.00615.18
7.0.80.0030.01015.39
7.0.70.0020.04818.28
7.0.60.0020.04418.54
7.0.50.0030.03818.76
7.0.40.0020.03816.76
7.0.30.0030.04716.82
7.0.20.0090.04016.69
7.0.10.0070.04216.85
7.0.00.0020.03916.63
5.6.400.0000.01114.40
5.6.390.0030.00914.23
5.6.380.0030.00614.08
5.6.370.0040.00414.33
5.6.360.0060.00614.25
5.6.350.0070.00714.46
5.6.340.0040.00714.09
5.6.330.0030.01314.55
5.6.320.0060.00914.28
5.6.310.0060.00613.89
5.6.300.0060.00914.49
5.6.290.0060.00614.05
5.6.280.0100.03717.75
5.6.270.0000.01314.32
5.6.260.0100.00614.30
5.6.250.0120.00014.38
5.6.240.0000.01514.18
5.6.230.0080.00514.32
5.6.220.0050.03517.46
5.6.210.0050.04517.38
5.6.200.0060.02617.78
5.6.190.0070.02317.64
5.6.180.0060.04317.72
5.6.170.0090.02817.56
5.6.160.0050.03717.59
5.6.150.0110.03717.52
5.6.140.0100.04117.68
5.6.130.0070.04517.62
5.6.120.0060.02917.64
5.6.110.0050.04917.62
5.6.100.0030.03617.70
5.6.90.0020.04717.56
5.6.80.0030.03317.20
5.6.70.0070.03917.36
5.6.60.0070.02817.26
5.6.50.0020.04817.40
5.6.40.0110.03317.30
5.6.30.0030.02817.27
5.6.20.0030.04117.33
5.6.10.0030.04317.38
5.6.00.0080.04317.23
5.5.380.0100.00314.27
5.5.370.0040.00413.83
5.5.360.0050.04517.16
5.5.350.0060.04617.07
5.5.340.0060.02217.63
5.5.330.0020.02917.58
5.5.320.0050.04417.63
5.5.310.0100.03517.40
5.5.300.0050.04417.42
5.5.290.0060.04017.51
5.5.280.0070.04617.46
5.5.270.0050.03617.52
5.5.260.0050.03617.57
5.5.250.0070.02317.35
5.5.240.0080.01917.12
5.5.230.0030.02317.21
5.5.220.0040.02217.27
5.5.210.0010.03917.06
5.5.200.0020.04617.04
5.5.190.0000.03217.09
5.5.180.0000.04217.10
5.5.170.0030.00913.93
5.5.160.0040.02317.16
5.5.150.0020.04517.25
5.5.140.0050.03517.16
5.5.130.0000.03817.21
5.5.120.0090.03716.91
5.5.110.0070.02717.16
5.5.100.0100.04017.04
5.5.90.0020.04317.11
5.5.80.0020.03517.06
5.5.70.0060.03417.04
5.5.60.0050.04217.19
5.5.50.0040.03616.93
5.5.40.0040.03317.21
5.5.30.0030.03717.16
5.5.20.0020.04716.97
5.5.10.0100.03817.09
5.5.00.0070.04216.94
5.4.450.0050.03815.08
5.4.440.0070.04215.15
5.4.430.0070.02415.18
5.4.420.0040.02815.14
5.4.410.0020.02215.05
5.4.400.0040.01814.99
5.4.390.0020.02214.89
5.4.380.0050.01914.89
5.4.370.0060.02315.01
5.4.360.0020.03914.91
5.4.350.0050.02214.73
5.4.340.0120.03315.13
5.4.330.0030.00710.88
5.4.320.0030.02715.00
5.4.310.0020.04115.01
5.4.300.0000.02814.99
5.4.290.0020.03315.06
5.4.280.0060.03515.04
5.4.270.0040.02615.00
5.4.260.0050.04115.10
5.4.250.0000.04515.02
5.4.240.0080.03614.99
5.4.230.0050.03415.06
5.4.220.0080.04114.88
5.4.210.0020.04515.09
5.4.200.0070.03914.79
5.4.190.0030.03714.88
5.4.180.0090.03514.80
5.4.170.0020.03514.90
5.4.160.0070.03514.90
5.4.150.0070.04114.80
5.4.140.0070.03713.56
5.4.130.0040.03913.57
5.4.120.0030.04213.44
5.4.110.0050.03813.65
5.4.100.0050.03913.42
5.4.90.0020.03913.70
5.4.80.0060.03813.53
5.4.70.0050.03813.69
5.4.60.0030.03713.40
5.4.50.0000.04213.60
5.4.40.0050.03913.63
5.4.30.0050.03013.54
5.4.20.0050.03713.52
5.4.10.0040.03713.64
5.4.00.0080.03113.33
5.3.290.0020.03912.58
5.3.280.0070.03612.39
5.3.270.0040.03312.41
5.3.260.0080.03712.49
5.3.250.0050.03212.52
5.3.240.0020.04212.34
5.3.230.0030.02812.38
5.3.220.0070.03812.35
5.3.210.0060.04312.40
5.3.200.0020.03912.25
5.3.190.0060.03812.38
5.3.180.0020.03712.47
5.3.170.0030.03712.56
5.3.160.0070.03612.37
5.3.150.0010.03812.43
5.3.140.0060.04012.48
5.3.130.0050.03512.48
5.3.120.0030.03812.48
5.3.110.0030.03512.48
5.3.100.0050.03712.20
5.3.90.0030.03912.20
5.3.80.0080.03511.99
5.3.70.0080.03312.16
5.3.60.0080.03512.13
5.3.50.0080.03312.18
5.3.40.0030.02812.08
5.3.30.0030.03712.17
5.3.20.0060.02811.99
5.3.10.0030.04111.85
5.3.00.0030.04011.80
5.2.170.0030.06012.35
5.2.160.0070.05312.35
5.2.150.0000.05712.35
5.2.140.0030.05712.35
5.2.130.0100.05312.35
5.2.120.0000.06312.35
5.2.110.0030.05012.35
5.2.100.0070.05312.35
5.2.90.0030.05712.35
5.2.80.0030.05312.35
5.2.70.0100.05712.35
5.2.60.0000.06312.35
5.2.50.0070.05312.35
5.2.40.0030.05712.35
5.2.30.0100.05312.35
5.2.20.0030.05012.35
5.2.10.0070.05312.35
5.2.00.0030.06012.35
5.1.60.0030.05312.35
5.1.50.0000.04712.35
5.1.40.0030.04312.35
5.1.30.0030.06012.35
5.1.20.0030.06012.35
5.1.10.0070.05012.35
5.1.00.0070.04712.35
5.0.50.0030.04312.35
5.0.40.0030.03012.35
5.0.30.0000.06712.35
5.0.20.0000.04012.35
5.0.10.0070.04312.35
5.0.00.0000.06312.35
4.4.90.0070.03012.35
4.4.80.0030.02712.35
4.4.70.0000.03712.35
4.4.60.0030.03312.35
4.4.50.0030.03312.35
4.4.40.0000.05312.35
4.4.30.0030.03312.35
4.4.20.0070.03012.35
4.4.10.0030.03312.35
4.4.00.0000.05312.35
4.3.110.0000.03012.35
4.3.100.0030.03312.35
4.3.90.0070.02712.35
4.3.80.0000.05312.35
4.3.70.0000.03012.35
4.3.60.0030.03012.35
4.3.50.0070.03312.35
4.3.40.0000.05312.35
4.3.30.0030.03312.35
4.3.20.0000.04012.35
4.3.10.0000.03312.35
4.3.00.0000.01712.35

preferences:
46.01 ms | 401 KiB | 5 Q