3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = NULL; isset($var['test']['aa']); $var2 = array(); isset($var2['test']['aa']);

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)
8.3.60.0120.00916.63
8.3.50.0120.00921.98
8.3.40.0070.00718.58
8.3.30.0070.00718.63
8.3.20.0040.00420.33
8.3.10.0040.00420.43
8.3.00.0000.01021.60
8.2.180.0120.00916.36
8.2.170.0110.00322.96
8.2.160.0090.00922.25
8.2.150.0050.00324.18
8.2.140.0050.00324.66
8.2.130.0080.00020.87
8.2.120.0090.00026.35
8.2.110.0030.00619.39
8.2.100.0090.00317.93
8.2.90.0030.00619.28
8.2.80.0060.00317.97
8.2.70.0080.00017.60
8.2.60.0070.00017.80
8.2.50.0090.00318.09
8.2.40.0030.00522.32
8.2.30.0000.00719.37
8.2.20.0040.00417.59
8.2.10.0070.00017.97
8.2.00.0070.00017.92
8.1.280.0110.00425.92
8.1.270.0040.00422.14
8.1.260.0080.00028.09
8.1.250.0050.00228.09
8.1.240.0060.00322.53
8.1.230.0070.00317.89
8.1.220.0050.00217.74
8.1.210.0050.00318.77
8.1.200.0060.00317.13
8.1.190.0000.00818.86
8.1.180.0000.00818.10
8.1.170.0000.00818.61
8.1.160.0000.00720.68
8.1.150.0050.00218.86
8.1.140.0060.00319.50
8.1.130.0030.00517.63
8.1.120.0100.00017.32
8.1.110.0070.00017.27
8.1.100.0040.00417.29
8.1.90.0000.00817.41
8.1.80.0070.00017.31
8.1.70.0040.00417.36
8.1.60.0040.00417.49
8.1.50.0090.00017.41
8.1.40.0080.00017.50
8.1.30.0040.00417.55
8.1.20.0040.00417.49
8.1.10.0050.00217.60
8.1.00.0050.00217.50
8.0.300.0040.00418.77
8.0.290.0070.00016.58
8.0.280.0070.00018.37
8.0.270.0000.00717.14
8.0.260.0000.00718.41
8.0.250.0000.00716.90
8.0.240.0000.00916.83
8.0.230.0030.00316.87
8.0.220.0030.00316.77
8.0.210.0000.00716.86
8.0.200.0030.00516.94
8.0.190.0070.00016.88
8.0.180.0030.00616.86
8.0.170.0040.00416.86
8.0.160.0030.00816.95
8.0.150.0030.00616.84
8.0.140.0050.00516.77
8.0.130.0060.00013.29
8.0.120.0020.00516.82
8.0.110.0000.00716.73
8.0.100.0000.00816.65
8.0.90.0030.00316.93
8.0.80.0060.00916.88
8.0.70.0040.00416.60
8.0.60.0040.00416.82
8.0.50.0000.00816.82
8.0.30.0110.00817.14
8.0.20.0100.01117.40
8.0.10.0000.00816.98
8.0.00.0070.01116.74
7.4.330.0020.00216.70
7.4.320.0000.00616.47
7.4.300.0000.00616.43
7.4.290.0030.00316.40
7.4.280.0040.00416.44
7.4.270.0030.00616.54
7.4.260.0030.00316.46
7.4.250.0030.00516.41
7.4.240.0070.00016.33
7.4.230.0030.00316.55
7.4.220.0180.00016.36
7.4.210.0010.01216.47
7.4.200.0000.00716.38
7.4.160.0060.00916.38
7.4.150.0060.01117.40
7.4.140.0060.01117.86
7.4.130.0120.00716.50
7.4.120.0090.00816.41
7.4.110.0130.00316.46
7.4.100.0070.01016.35
7.4.90.0130.00316.42
7.4.80.0090.00919.39
7.4.70.0090.01216.54
7.4.60.0100.01316.29
7.4.50.0090.00316.47
7.4.40.0070.01316.54
7.4.30.0060.01216.54
7.4.10.0000.01815.14
7.4.00.0090.00814.78
7.3.330.0050.00013.00
7.3.320.0050.00013.17
7.3.310.0070.00016.40
7.3.300.0070.00016.28
7.3.290.0060.00016.24
7.3.280.0070.01216.23
7.3.270.0070.01017.40
7.3.260.0100.01016.54
7.3.250.0110.01116.40
7.3.240.0100.00616.27
7.3.230.0130.00316.39
7.3.210.0100.00716.25
7.3.200.0060.01216.31
7.3.190.0120.00716.25
7.3.180.0090.00616.27
7.3.170.0100.00616.25
7.3.160.0030.01316.42
7.3.130.0070.00714.79
7.3.120.0070.01114.89
7.3.110.0050.01214.88
7.3.100.0060.00814.92
7.3.90.0080.00314.66
7.3.80.0010.00714.69
7.3.70.0030.00814.83
7.3.60.0060.00914.86
7.3.50.0050.00814.58
7.3.40.0050.01014.76
7.3.30.0030.00914.69
7.3.20.0050.01116.37
7.3.10.0070.00816.61
7.3.00.0070.01116.42
7.2.330.0060.01116.41
7.2.320.0130.00316.46
7.2.310.0030.01316.24
7.2.300.0000.01816.48
7.2.290.0110.00816.64
7.2.260.0070.01014.52
7.2.250.0080.00514.86
7.2.240.0090.00914.67
7.2.230.0110.00314.66
7.2.220.0040.00814.78
7.2.210.0040.00715.03
7.2.200.0090.00514.91
7.2.190.0090.00514.76
7.2.180.0030.01214.88
7.2.170.0090.00914.77
7.2.160.0090.00414.69
7.2.150.0060.00516.68
7.2.140.0070.00616.63
7.2.130.0080.00816.65
7.2.120.0050.01016.48
7.2.110.0070.00916.60
7.2.100.0080.00916.61
7.2.90.0120.00716.55
7.2.80.0100.00916.40
7.2.70.0050.01016.61
7.2.60.0080.00716.54
7.2.50.0110.00416.77
7.2.40.0070.01016.61
7.2.30.0050.00916.57
7.2.20.0100.00716.65
7.2.10.0100.00716.59
7.2.00.0070.01017.19
7.1.330.0060.00915.76
7.1.320.0140.00315.68
7.1.310.0030.00715.76
7.1.300.0030.00915.73
7.1.290.0000.01315.75
7.1.280.0110.00515.63
7.1.270.0080.00715.63
7.1.260.0070.00815.66
7.1.250.0070.00615.65
7.1.240.0030.00915.63
7.1.230.0080.00615.72
7.1.220.0070.00815.69
7.1.210.0050.00815.57
7.1.200.0020.01015.71
7.1.190.0060.00715.67
7.1.180.0050.00615.72
7.1.170.0050.00815.61
7.1.160.0050.00615.73
7.1.150.0060.00615.71
7.1.140.0030.01115.74
7.1.130.0060.00615.85
7.1.120.0050.00915.79
7.1.110.0040.00815.61
7.1.100.0080.00516.34
7.1.90.0030.00915.76
7.1.80.0080.00415.83
7.1.70.0050.00716.07
7.1.60.0060.00615.96
7.1.50.0080.00815.94
7.1.40.0030.01015.60
7.1.30.0050.00815.59
7.1.20.0080.00715.71
7.1.10.0080.00615.50
7.1.00.0070.02217.33
7.0.330.0070.00815.05
7.0.320.0040.00915.27
7.0.310.0080.00515.11
7.0.300.0070.00615.38
7.0.290.0050.00815.16
7.0.280.0040.00915.33
7.0.270.0020.00815.31
7.0.260.0030.01015.42
7.0.250.0100.00615.18
7.0.240.0050.00615.29
7.0.230.0050.00815.30
7.0.220.0050.00615.17
7.0.210.0040.00715.27
7.0.200.0050.01015.61
7.0.190.0060.00615.31
7.0.180.0070.00615.27
7.0.170.0070.00415.49
7.0.160.0060.00615.28
7.0.150.0050.00715.24
7.0.140.0030.00815.25
7.0.130.0060.00715.33
7.0.120.0070.00715.44
7.0.110.0090.00315.32
7.0.100.0050.02016.46
7.0.90.0130.01916.52
7.0.80.0030.02216.40
7.0.70.0060.01516.31
7.0.60.0050.02416.45
7.0.50.0090.02016.53
7.0.40.0070.01915.11
7.0.30.0050.01915.05
7.0.20.0060.02115.09
7.0.10.0040.01715.02
7.0.00.0060.01915.04
5.6.400.0000.01514.29
5.6.390.0050.01014.46
5.6.380.0050.00814.31
5.6.370.0060.00514.33
5.6.360.0060.00714.20
5.6.350.0080.00514.37
5.6.340.0070.00714.38
5.6.330.0070.00614.11
5.6.320.0070.00714.14
5.6.310.0030.01214.32
5.6.300.0050.01014.22
5.6.290.0040.00914.34
5.6.280.0030.02416.00
5.6.270.0040.00814.26
5.6.260.0030.01014.43
5.6.250.0070.01315.90
5.6.240.0070.02615.83
5.6.230.0060.01815.90
5.6.220.0060.03316.01
5.6.210.0110.02015.85
5.6.200.0070.02615.85
5.6.190.0070.01816.02
5.6.180.0060.01715.98
5.6.170.0060.02516.03
5.6.160.0080.02215.91
5.6.150.0060.02016.01
5.6.140.0070.02215.90
5.6.130.0060.02515.88
5.6.120.0030.02815.88
5.6.110.0070.02715.90
5.6.100.0090.02115.90
5.6.90.0050.01416.01
5.6.80.0080.01515.70
5.6.70.0060.01415.69
5.6.60.0050.01515.78
5.6.50.0030.01715.75
5.6.40.0040.01515.68
5.6.30.0050.01415.79
5.6.20.0040.01615.73
5.6.10.0090.00915.74
5.6.00.0060.01515.74
5.5.380.0060.01414.92
5.5.370.0070.02415.08
5.5.360.0040.02314.92
5.5.350.0070.02715.07
5.5.340.0070.02215.02
5.5.330.0060.02615.01
5.5.320.0020.01715.08
5.5.310.0100.02515.03
5.5.300.0080.02015.08
5.5.290.0100.02015.02
5.5.280.0040.01815.04
5.5.270.0040.02715.06
5.5.260.0070.01915.06
5.5.250.0050.01215.00
5.5.240.0080.01614.84
5.5.230.0050.01314.97
5.5.220.0010.02015.08
5.5.210.0050.01514.97
5.5.200.0070.01214.93
5.5.190.0030.01514.98
5.5.180.0020.01414.91
5.5.170.0060.00614.05
5.5.160.0070.01215.03
5.5.150.0020.01314.89
5.5.140.0060.01114.92
5.5.130.0070.01514.90
5.5.120.0080.01314.97
5.5.110.0060.01115.00
5.5.100.0080.01014.92
5.5.90.0040.01414.94
5.5.80.0030.01814.72
5.5.70.0020.02014.88
5.5.60.0070.01714.90
5.5.50.0060.02614.92
5.5.40.0070.01114.84
5.5.30.0050.01214.82
5.5.20.0040.02214.92
5.5.10.0020.01914.99
5.5.00.0070.01614.86

preferences:
30.95 ms | 401 KiB | 5 Q