3v4l.org

run code in 300+ PHP versions simultaneously
<?php function ref(&$a) {} function val($a) {} $b = []; $c = 'hi'; $a = $$c['a']['b']; $a =& $$c['a']['b']; val($$c['a']['b']); ref($$c['a']['b']); valn($b['a']['b']); $a = $b['a']['b']; $a =& $b['a']['b']; val($b['a']['b']); ref($b['a']['b']); valn($b['a']['b']);

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)
8.3.60.0100.01016.63
8.3.50.0070.00716.59
8.3.40.0040.01118.84
8.3.30.0140.00018.83
8.3.20.0050.00220.29
8.3.10.0080.00021.88
8.3.00.0110.00423.40
8.2.180.0060.01616.50
8.2.170.0080.00622.96
8.2.160.0070.00720.16
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00019.95
8.2.120.0140.00326.35
8.2.110.0140.00321.08
8.2.100.0080.00417.93
8.2.90.0000.00819.40
8.2.80.0080.00017.97
8.2.70.0060.00317.50
8.2.60.0040.00417.93
8.2.50.0080.00018.07
8.2.40.0050.00322.32
8.2.30.0040.00419.46
8.2.20.0040.00417.71
8.2.10.0040.00417.99
8.2.00.0040.00418.07
8.1.280.0180.00025.92
8.1.270.0110.00723.96
8.1.260.0080.00028.09
8.1.250.0080.00028.09
8.1.240.0090.00320.81
8.1.230.0080.00319.14
8.1.220.0080.00017.74
8.1.210.0060.00318.77
8.1.200.0060.00317.35
8.1.190.0040.00417.23
8.1.180.0050.00318.10
8.1.170.0000.00818.65
8.1.160.0040.00420.65
8.1.150.0050.00318.79
8.1.140.0000.00819.57
8.1.130.0030.00317.57
8.1.120.0000.00817.45
8.1.110.0030.00517.48
8.1.100.0040.00417.48
8.1.90.0040.00417.46
8.1.80.0000.00717.46
8.1.70.0000.00817.34
8.1.60.0040.00417.58
8.1.50.0000.00917.61
8.1.40.0050.00317.45
8.1.30.0040.00417.69
8.1.20.0080.00017.53
8.1.10.0000.00817.62
8.1.00.0000.00717.55
8.0.300.0050.00318.77
8.0.290.0050.00216.75
8.0.280.0030.00318.48
8.0.270.0080.00017.20
8.0.260.0040.00417.16
8.0.250.0000.00717.01
8.0.240.0030.00316.95
8.0.230.0030.00316.88
8.0.220.0030.00316.99
8.0.210.0000.00716.93
8.0.200.0040.00416.90
8.0.190.0080.00017.05
8.0.180.0030.00616.97
8.0.170.0080.00017.00
8.0.160.0000.00816.98
8.0.150.0000.00716.93
8.0.140.0050.00216.94
8.0.130.0000.00613.33
8.0.120.0030.00516.93
8.0.110.0080.00016.93
8.0.100.0080.00016.94
8.0.90.0040.00416.97
8.0.80.0090.01216.90
8.0.70.0050.00316.98
8.0.60.0000.00716.96
8.0.50.0030.00416.82
8.0.30.0100.00917.14
8.0.20.0110.01017.40
8.0.10.0020.00517.07
8.0.00.0080.01416.76
7.4.330.0000.00516.71
7.4.320.0000.00716.61
7.4.300.0050.00216.49
7.4.290.0000.00716.54
7.4.280.0000.00916.47
7.4.270.0040.00416.66
7.4.260.0000.00716.50
7.4.250.0050.00216.41
7.4.240.0020.00516.57
7.4.230.0030.00316.40
7.4.220.0030.01616.63
7.4.210.0060.01016.58
7.4.200.0000.00716.44
7.4.160.0130.00316.54
7.4.150.0040.01817.40
7.4.140.0180.00317.86
7.4.130.0100.00716.32
7.4.120.0070.01016.58
7.4.110.0070.01016.52
7.4.100.0130.01016.47
7.4.90.0100.00716.64
7.4.80.0100.01319.39
7.4.70.0160.00016.78
7.4.60.0120.00616.48
7.4.50.0030.01016.45
7.4.40.0100.01016.50
7.4.30.0110.01116.58
7.4.00.0070.00914.93
7.3.330.0020.00313.31
7.3.320.0030.00313.36
7.3.310.0000.00716.23
7.3.300.0030.00316.37
7.3.290.0030.00316.22
7.3.280.0080.01016.36
7.3.270.0030.01317.40
7.3.260.0040.01216.52
7.3.240.0080.00816.35
7.3.230.0100.01116.39
7.3.210.0000.01716.29
7.3.200.0100.01019.39
7.3.190.0170.00016.50
7.3.180.0080.01116.66
7.3.170.0060.01316.36
7.3.160.0070.01116.48
7.3.120.0100.00715.03
7.3.110.0170.00314.96
7.3.100.0110.00715.13
7.3.90.0100.00314.90
7.3.80.0040.00814.75
7.3.70.0060.00914.82
7.3.60.0030.00614.48
7.3.50.0120.00414.70
7.3.40.0060.00314.93
7.3.30.0040.00714.88
7.3.20.0080.00816.66
7.3.10.0000.01416.62
7.3.00.0090.00316.80
7.2.330.0140.00316.77
7.2.320.0070.01316.42
7.2.310.0070.01016.77
7.2.300.0140.00716.42
7.2.290.0100.00716.50
7.2.250.0110.00314.88
7.2.240.0110.00715.04
7.2.230.0130.00314.97
7.2.220.0030.01215.14
7.2.210.0090.00314.92
7.2.200.0060.00614.88
7.2.190.0030.01215.02
7.2.180.0060.01015.09
7.2.170.0070.00715.03
7.2.160.0070.00714.84
7.2.150.0100.00716.88
7.2.140.0030.01316.77
7.2.130.0040.01116.73
7.2.120.0100.00716.88
7.2.110.0060.00316.98
7.2.100.0060.00616.77
7.2.90.0060.01216.91
7.2.80.0060.00716.79
7.2.70.0060.00916.82
7.2.60.0050.01316.80
7.2.50.0000.01116.98
7.2.40.0060.01116.96
7.2.30.0060.00916.77
7.2.20.0000.00916.79
7.2.10.0000.01616.79
7.2.00.0050.01018.00
7.1.330.0100.00715.75
7.1.320.0050.00515.57
7.1.310.0070.00715.71
7.1.300.0090.00615.48
7.1.290.0070.00315.86
7.1.280.0000.01415.81
7.1.270.0110.00415.67
7.1.260.0060.00815.58
7.1.250.0130.00315.71
7.1.240.0140.00015.54
7.1.230.0060.00615.80
7.1.220.0060.00615.85
7.1.210.0060.00815.79
7.1.200.0050.00915.72
7.1.190.0040.01215.46
7.1.180.0030.00615.75
7.1.170.0090.00615.81
7.1.160.0090.00015.58
7.1.150.0070.00315.84
7.1.140.0070.00715.67
7.1.130.0030.01015.75
7.1.120.0000.01515.80
7.1.110.0000.01315.64
7.1.100.0100.00316.75
7.1.90.0070.00715.66
7.1.80.0110.00315.76
7.1.70.0050.00816.44
7.1.60.0020.01617.34
7.1.50.0110.00316.37
7.1.40.0040.00415.57
7.1.30.0060.00315.79
7.1.20.0040.00715.58
7.1.10.0090.00315.73
7.1.00.0000.04719.07
7.0.330.0060.00315.45
7.0.320.0140.00015.30
7.0.310.0130.00315.05
7.0.300.0040.01115.14
7.0.290.0160.00015.21
7.0.280.0070.00715.33
7.0.270.0100.00715.22
7.0.260.0030.01315.07
7.0.250.0070.00415.36
7.0.240.0080.00415.20
7.0.230.0080.00415.46
7.0.220.0030.01015.41
7.0.210.0000.01515.55
7.0.200.0150.00715.85
7.0.190.0060.00915.18
7.0.180.0060.00615.40
7.0.170.0070.00315.50
7.0.160.0000.01315.36
7.0.150.0040.00415.38
7.0.140.0060.00615.25
7.0.130.0090.00615.47
7.0.120.0040.00415.42
7.0.110.0000.00715.36
7.0.100.0030.00915.39
7.0.90.0080.00515.42
7.0.80.0000.01415.21
7.0.70.0000.00815.15
7.0.60.0100.03518.49
7.0.50.0060.02216.61
7.0.40.0030.03216.69
7.0.30.0150.02016.69
7.0.20.0250.02616.89
7.0.10.0030.05016.79
7.0.00.0100.04016.91
5.6.400.0100.00314.43
5.6.390.0030.01014.36
5.6.380.0080.00814.48
5.6.370.0070.01114.46
5.6.360.0070.00714.48
5.6.350.0060.00614.50
5.6.340.0070.00714.59
5.6.330.0060.01014.31
5.6.320.0060.00314.54
5.6.310.0030.00714.17
5.6.300.0000.00914.50
5.6.290.0080.00814.45
5.6.280.0070.01717.70
5.6.270.0040.00714.13
5.6.260.0060.00814.50
5.6.250.0000.01114.25
5.6.240.0070.00714.41
5.6.230.0030.00714.24
5.6.220.0000.01214.23
5.6.210.0080.04017.63
5.6.200.0050.02316.18
5.6.190.0070.03317.32
5.6.180.0300.03717.29
5.6.170.0150.02517.38
5.6.160.0030.05017.43
5.6.150.0100.03916.21
5.6.140.0050.02316.16
5.6.130.0020.02816.04
5.6.120.0080.03417.68
5.6.110.0030.04717.62
5.6.100.0080.02817.66
5.6.90.0070.04717.83
5.6.80.0070.03917.25
5.6.70.0030.00914.32
5.6.60.0080.00414.11
5.6.50.0060.00614.32
5.6.40.0030.00914.40
5.6.30.0000.01614.46
5.6.20.0000.01014.01
5.6.10.0030.00514.00
5.6.00.0070.00713.93
5.5.380.0030.01014.28
5.5.370.0030.01014.16
5.5.360.0070.00714.07
5.5.350.0200.04317.46
5.5.340.0050.04716.01
5.5.330.0070.02917.13
5.5.320.0150.04317.21
5.5.310.0150.04417.17
5.5.300.0110.03915.97
5.5.290.0050.03916.19
5.5.280.0090.02017.62
5.5.270.0050.04317.49
5.5.260.0050.02317.44
5.5.250.0030.02717.38
5.5.240.0110.04017.04
5.5.230.0000.00814.04
5.5.220.0030.00613.91
5.5.210.0000.01513.93
5.5.200.0030.01014.09
5.5.190.0060.00614.29
5.5.180.0120.00414.01
5.5.170.0070.00713.92
5.5.160.0040.00714.17
5.5.150.0000.01314.37
5.5.140.0040.01114.24
5.5.130.0080.00414.06
5.5.120.0080.00314.04
5.5.110.0060.00313.98
5.5.100.0030.01014.02
5.5.90.0060.00914.16
5.5.80.0080.00014.02
5.5.70.0100.00314.16
5.5.60.0040.01214.14
5.5.50.0060.00614.11
5.5.40.0030.01313.96
5.5.30.0030.01414.27
5.5.20.0030.00914.03
5.5.10.0000.01113.96
5.5.00.0030.00714.09

preferences:
49.58 ms | 400 KiB | 5 Q