3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); ini_set('display_errors', true); function by_ref(&$value) { echo "Call by ref value:\n"; var_dump($value); } function by_value($value) { echo "Call by value value:\n"; var_dump($value); } $thing = array(1,2); echo "Before call by ref:\n"; var_dump($thing); by_ref($thing[5][6]); echo "After call by ref:\n"; var_dump($thing); echo "Before call by value\n"; by_value($thing[7][8]); echo "After call by value:\n"; var_dump($thing); echo "Before call by ref again:\n"; by_ref($thing[7][8]); echo "After call by ref again:\n"; var_dump($thing); echo "isset:\n"; var_dump(isset($thing[9][10]));

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)
8.3.60.0170.00318.43
8.3.50.0080.00821.99
8.3.40.0110.00418.84
8.3.30.0140.00320.29
8.3.20.0090.00320.33
8.3.10.0080.00821.95
8.3.00.0080.00022.44
8.2.180.0070.01416.75
8.2.170.0100.01022.96
8.2.160.0100.01022.17
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0020.00526.16
8.2.120.0040.00420.75
8.2.110.0040.00422.17
8.2.100.0070.00417.81
8.2.90.0040.00419.36
8.2.80.0050.00319.28
8.2.70.0050.00317.73
8.2.60.0050.00317.93
8.2.50.0060.00318.07
8.2.40.0050.00518.18
8.2.30.0040.00419.36
8.2.20.0060.00317.83
8.2.10.0030.00617.69
8.2.00.0060.00317.69
8.1.280.0130.00325.92
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0030.00623.87
8.1.230.0040.00819.10
8.1.220.0000.00817.74
8.1.210.0000.00918.77
8.1.200.0000.01017.22
8.1.190.0080.00017.39
8.1.180.0060.00318.10
8.1.170.0060.00318.62
8.1.160.0000.00818.83
8.1.150.0040.00418.50
8.1.140.0000.00717.31
8.1.130.0000.00717.73
8.1.120.0000.00717.38
8.1.110.0040.00417.33
8.1.100.0030.00517.36
8.1.90.0040.00417.45
8.1.80.0030.00517.31
8.1.70.0030.00317.36
8.1.60.0000.00917.42
8.1.50.0000.00717.41
8.1.40.0040.00417.55
8.1.30.0000.00717.63
8.1.20.0040.00417.65
8.1.10.0060.00317.52
8.1.00.0000.00717.45
8.0.300.0070.00018.77
8.0.290.0070.00016.93
8.0.280.0030.00318.37
8.0.270.0030.00317.26
8.0.260.0030.00316.89
8.0.250.0000.00616.87
8.0.240.0040.00716.93
8.0.230.0030.00316.96
8.0.220.0030.00316.83
8.0.210.0000.00616.85
8.0.200.0040.00416.98
8.0.190.0000.00816.92
8.0.180.0040.00416.99
8.0.170.0080.00016.84
8.0.160.0040.00416.97
8.0.150.0080.00016.91
8.0.140.0060.00616.90
8.0.130.0030.00313.36
8.0.120.0000.00816.79
8.0.110.0080.00016.81
8.0.100.0050.00316.96
8.0.90.0040.00416.68
8.0.80.0100.00616.85
8.0.70.0040.00416.86
8.0.60.0080.00016.94
8.0.50.0040.00416.95
8.0.30.0140.00716.98
8.0.20.0070.01417.40
8.0.10.0000.00716.98
8.0.00.0110.01116.60
7.4.330.0030.00315.07
7.4.320.0000.00616.43
7.4.300.0030.00316.61
7.4.290.0000.00616.40
7.4.280.0000.00716.61
7.4.270.0030.00316.68
7.4.260.0030.00313.18
7.4.250.0000.00716.57
7.4.240.0040.00316.63
7.4.230.0070.00016.70
7.4.220.0030.01616.46
7.4.210.0100.00616.50
7.4.200.0030.00516.63
7.4.190.0030.00316.64
7.4.160.0070.01016.55
7.4.150.0140.01017.40
7.4.140.0070.01317.86
7.4.130.0060.01116.57
7.4.120.0100.00816.59
7.4.110.0030.01416.67
7.4.100.0140.00416.64
7.4.90.0110.00616.54
7.4.80.0100.01319.39
7.4.70.0060.00916.57
7.4.60.0090.00916.57
7.4.50.0030.00616.32
7.4.40.0030.01022.77
7.4.30.0030.01316.30
7.4.00.0090.00915.17
7.3.330.0050.00013.35
7.3.320.0000.00513.41
7.3.310.0040.00416.40
7.3.300.0070.00016.35
7.3.290.0070.00716.34
7.3.280.0110.00916.41
7.3.270.0110.00617.40
7.3.260.0170.00316.45
7.3.250.0080.01316.50
7.3.240.0060.01216.38
7.3.230.0170.00016.43
7.3.210.0080.01216.59
7.3.200.0100.01319.39
7.3.190.0100.01316.47
7.3.180.0000.01816.51
7.3.170.0110.00516.64
7.3.160.0080.00816.51
7.3.120.0110.00315.00
7.2.330.0090.00916.46
7.2.320.0130.01016.42
7.2.310.0070.01416.50
7.2.300.0120.00616.70
7.2.290.0080.00916.73
7.2.00.0090.00319.57
7.1.100.0100.01018.28
7.1.70.0000.00917.27
7.1.60.0110.01419.21
7.1.50.0090.00616.83
7.1.00.0000.06322.54
7.0.200.0040.00416.35
7.0.140.0070.06722.00
7.0.80.0200.05319.90
7.0.70.0130.07720.15
7.0.60.0070.09020.00
7.0.50.0130.08320.38
7.0.40.0100.08020.10
7.0.30.0000.07320.08
7.0.20.0000.09320.14
7.0.10.0100.07720.10
7.0.00.0030.05320.10
5.6.280.0000.07720.91
5.6.230.0100.06020.57
5.6.220.0070.07720.59
5.6.210.0100.07720.57
5.6.200.0200.06720.96
5.6.190.0070.08020.93
5.6.180.0030.04721.11
5.6.170.0030.05020.95
5.6.160.0030.05320.96
5.6.150.0100.08021.02
5.6.140.0100.03721.07
5.6.130.0100.08321.09
5.6.120.0070.08321.11
5.6.110.0070.05021.07
5.6.100.0170.07320.95
5.6.90.0200.07021.10
5.6.80.0070.06720.49
5.6.70.0030.08020.40
5.6.60.0130.07320.51
5.6.50.0100.07720.50
5.6.40.0170.06720.42
5.6.30.0130.07320.28
5.6.20.0100.05320.44
5.6.10.0100.07320.40
5.6.00.0130.07720.29
5.5.370.0100.07320.57
5.5.360.0130.07320.36
5.5.350.0070.05720.34
5.5.340.0100.05020.84
5.5.330.0070.08020.74
5.5.320.0130.07320.82
5.5.310.0000.06320.91
5.5.300.0000.05020.91
5.5.290.0100.06020.87
5.5.280.0070.05720.86
5.5.270.0030.06020.86
5.5.260.0100.05020.80
5.5.250.0070.06720.74
5.5.240.0000.05020.03
5.5.230.0030.08020.30
5.5.220.0030.05320.30
5.5.210.0100.05720.21
5.5.200.0030.05020.29
5.5.190.0030.08320.27
5.5.180.0030.05720.27
5.5.160.0170.07320.15
5.5.150.0070.05020.11
5.5.140.0070.08020.21
5.5.130.0130.07320.15
5.5.120.0300.05720.08
5.5.110.0000.08720.21
5.5.100.0130.06720.14
5.5.90.0070.06020.07
5.5.80.0030.07720.17
5.5.70.0000.08020.07
5.5.60.0130.07720.11
5.5.50.0070.06720.06
5.5.40.0070.06020.16
5.5.30.0030.04320.06
5.5.20.0030.08020.04
5.5.10.0030.08720.14
5.5.00.0030.08720.13
5.4.450.0200.04319.38
5.4.440.0030.08319.54
5.4.430.0130.06019.35
5.4.420.0100.08019.36
5.4.410.0000.04719.32
5.4.400.0170.07319.04
5.4.390.0100.07719.05
5.4.380.0070.07319.16
5.4.370.0070.07318.85
5.4.360.0000.05319.03
5.4.350.0130.07318.88
5.4.340.0070.04019.23
5.4.320.0100.07319.16
5.4.310.0000.08319.12
5.4.300.0100.06719.04
5.4.290.0070.07719.09
5.4.280.0100.03719.04
5.4.270.0070.08018.90
5.4.260.0130.07319.14
5.4.250.0030.07019.16
5.4.240.0000.05019.02
5.4.230.0100.06319.09
5.4.220.0100.06719.16
5.4.210.0100.07319.17
5.4.200.0000.08019.15
5.4.190.0100.06319.11
5.4.180.0170.06018.86
5.4.170.0030.07719.04
5.4.160.0070.08019.03
5.4.150.0100.07318.83
5.4.140.0130.07316.52
5.4.130.0100.07316.48
5.4.120.0100.06716.54
5.4.110.0000.04716.32
5.4.100.0030.04316.48
5.4.90.0070.05316.40
5.4.80.0070.07016.31
5.4.70.0070.07316.54
5.4.60.0100.07016.32
5.4.50.0030.07716.35
5.4.40.0030.06316.49
5.4.30.0070.07316.31
5.4.20.0030.05716.40
5.4.10.0030.07316.41
5.4.00.0200.05015.86
5.3.290.0230.06314.78
5.3.280.0100.07314.56
5.3.270.0070.06314.70
5.3.260.0170.07314.68
5.3.250.0070.07714.67
5.3.240.0070.07714.66
5.3.230.0070.06014.61
5.3.220.0070.04314.70
5.3.210.0200.06314.49
5.3.200.0070.04714.68
5.3.190.0070.06714.57
5.3.180.0100.04714.67
5.3.170.0130.06314.57
5.3.160.0030.08014.54
5.3.150.0030.06314.68
5.3.140.0030.08314.52
5.3.130.0130.06314.57
5.3.120.0070.07714.60
5.3.110.0000.08314.68
5.3.100.0100.04314.17
5.3.90.0130.06314.14
5.3.80.0000.04314.05
5.3.70.0070.03314.00
5.3.60.0130.02713.93
5.3.50.0030.08014.07
5.3.40.0070.07014.02
5.3.30.0070.07713.99
5.3.20.0070.07013.80
5.3.10.0100.06713.72
5.3.00.0030.06713.70
5.2.170.0030.04311.68
5.2.160.0030.05311.68
5.2.150.0030.04711.68
5.2.140.0170.05311.68
5.2.130.0100.03711.68
5.2.120.0070.06311.68
5.2.110.0130.04711.68
5.2.100.0030.06011.68
5.2.90.0070.04311.68
5.2.80.0030.06311.68
5.2.70.0070.04011.68
5.2.60.0070.04711.68
5.2.50.0100.05711.68
5.2.40.0070.06311.68
5.2.30.0070.05311.68
5.2.20.0070.06011.68
5.2.10.0030.06011.68
5.2.00.0100.05011.68
5.1.60.0000.03011.68
5.1.50.0000.03011.68
5.1.40.0000.02711.68
5.1.30.0030.02711.68
5.1.20.0070.02311.68
5.1.10.0000.02711.68
5.1.00.0030.02311.68
5.0.50.0100.02011.68
5.0.40.0000.02311.68
5.0.30.0100.02011.68
5.0.20.0000.02011.68
5.0.10.0000.02011.68
5.0.00.0030.03011.68
4.4.90.0030.03311.68
4.4.80.0100.01011.68
4.4.70.0000.03711.68
4.4.60.0070.03311.68
4.4.50.0070.03311.68
4.4.40.0000.03311.68
4.4.30.0000.02311.68
4.4.20.0030.01311.68
4.4.10.0000.01711.68
4.4.00.0030.02711.68
4.3.110.0030.01311.68
4.3.100.0000.02011.68
4.3.90.0030.01311.68
4.3.80.0000.02311.68
4.3.70.0000.02011.68
4.3.60.0030.01311.68
4.3.50.0000.01711.68
4.3.40.0000.02311.68
4.3.30.0030.01711.68
4.3.20.0000.01711.68
4.3.10.0030.01311.68
4.3.00.0000.01311.68

preferences:
39.46 ms | 400 KiB | 5 Q