3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $a['common'] = 123; $a['a1'] = array( 'common' => &$a['common'], 'elt1' => 11, 'elt2' => 12 ); $a['a2'] = array( 'common' => &$a['common'], 'elt1' => 21, 'elt2' => 22 ); $as = serialize($a); $a2 = unserialize($as); var_dump($a2['common']); var_dump($a2['a1']['common']); var_dump($a2['a2']['common']); var_dump($as); $a2['common'] = 456; var_dump($a2['a1']['common']); var_dump($a2['a2']['common']);

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)
8.3.60.0110.00718.43
8.3.50.0080.00821.99
8.3.40.0100.00318.67
8.3.30.0100.00320.35
8.3.20.0040.00420.34
8.3.10.0000.00821.95
8.3.00.0040.00422.52
8.2.180.0080.00816.38
8.2.170.0150.00018.91
8.2.160.0150.00922.96
8.2.150.0080.00024.18
8.2.140.0130.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00419.64
8.2.110.0110.00020.86
8.2.100.0090.00317.90
8.2.90.0050.00519.19
8.2.80.0050.00317.97
8.2.70.0050.00517.50
8.2.60.0000.00817.93
8.2.50.0040.00418.10
8.2.40.0000.00818.12
8.2.30.0030.00618.06
8.2.20.0020.00517.66
8.2.10.0000.00817.64
8.2.00.0000.00717.55
8.1.280.0090.00625.92
8.1.270.0070.00024.66
8.1.260.0000.00726.35
8.1.250.0050.00328.09
8.1.240.0130.00722.62
8.1.230.0070.00417.77
8.1.220.0040.00417.74
8.1.210.0030.00618.77
8.1.200.0060.00317.12
8.1.190.0050.00317.23
8.1.180.0080.00018.10
8.1.170.0030.00618.70
8.1.160.0000.00722.18
8.1.150.0040.00418.50
8.1.140.0000.00717.27
8.1.130.0030.00317.84
8.1.120.0000.00817.47
8.1.110.0000.00817.43
8.1.100.0070.00017.29
8.1.90.0070.00017.44
8.1.80.0050.00317.34
8.1.70.0000.00817.39
8.1.60.0050.00317.54
8.1.50.0070.00017.51
8.1.40.0050.00317.48
8.1.30.0000.00817.40
8.1.20.0060.00317.62
8.1.10.0050.00317.43
8.1.00.0000.00917.42
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0030.00618.45
8.0.270.0040.00417.20
8.0.260.0030.00616.82
8.0.250.0020.00516.96
8.0.240.0000.00716.82
8.0.230.0070.00016.95
8.0.220.0000.00716.96
8.0.210.0000.00716.83
8.0.200.0070.00016.82
8.0.190.0000.00716.95
8.0.180.0000.00716.93
8.0.170.0000.00716.81
8.0.160.0030.00316.87
8.0.150.0040.00416.83
8.0.140.0040.00416.89
8.0.130.0000.00513.31
8.0.120.0000.00816.76
8.0.110.0040.00416.82
8.0.100.0030.00516.80
8.0.90.0030.00316.90
8.0.80.0060.01316.90
8.0.70.0070.00016.86
8.0.60.0000.00816.96
8.0.50.0050.00216.71
8.0.30.0060.01417.03
8.0.20.0140.00617.40
8.0.10.0070.00016.97
8.0.00.0110.00716.77
7.4.330.0020.00215.00
7.4.320.0000.00716.52
7.4.300.0000.00616.61
7.4.290.0000.00716.44
7.4.280.0040.00416.59
7.4.270.0030.00316.47
7.4.260.0000.00716.57
7.4.250.0040.00416.48
7.4.240.0040.00416.45
7.4.230.0070.00016.62
7.4.220.0180.00616.48
7.4.210.0080.00616.43
7.4.200.0030.00316.63
7.4.190.0000.00716.46
7.4.160.0080.00816.27
7.4.150.0060.01017.40
7.4.140.0100.01117.86
7.4.130.0120.00516.49
7.4.120.0180.00216.45
7.4.110.0060.01116.63
7.4.100.0080.00816.74
7.4.90.0110.00616.27
7.4.80.0080.00819.39
7.4.70.0040.01716.41
7.4.60.0030.01516.46
7.4.50.0000.00916.27
7.4.40.0040.01122.77
7.4.30.0030.01316.48
7.4.00.0110.00714.63
7.3.330.0030.00313.12
7.3.320.0020.00213.21
7.3.310.0000.00716.35
7.3.300.0030.00316.19
7.3.290.0090.01016.27
7.3.280.0080.00816.33
7.3.270.0150.00317.40
7.3.260.0060.01216.29
7.3.250.0100.00916.51
7.3.240.0030.01516.38
7.3.230.0040.01416.39
7.3.210.0030.01316.28
7.3.200.0120.00919.39
7.3.190.0150.00716.40
7.3.180.0170.00316.71
7.3.170.0060.01016.41
7.3.160.0060.01716.36
7.3.120.0060.00614.85
7.3.10.0040.01116.68
7.3.00.0040.00716.65
7.2.330.0120.00616.69
7.2.320.0040.01816.69
7.2.310.0100.00716.74
7.2.300.0070.01016.49
7.2.290.0090.00916.35
7.2.130.0030.01016.93
7.2.120.0090.00616.76
7.2.110.0030.00916.89
7.2.100.0090.00616.80
7.2.90.0030.00916.93
7.2.80.0040.01116.87
7.2.70.0040.01416.94
7.2.60.0060.00616.97
7.2.50.0070.00716.95
7.2.40.0110.00716.77
7.2.30.0080.00417.03
7.2.20.0090.00616.69
7.2.10.0100.00716.76
7.2.00.0040.00716.97
7.1.250.0000.01215.72
7.1.200.0030.00915.88
7.1.70.0050.00316.95
7.1.60.0040.01619.29
7.1.50.0160.01016.79
7.1.00.0070.05022.35
7.0.200.0220.00614.91
7.0.140.0100.06322.00
7.0.60.0100.08319.89
7.0.50.0030.04317.95
7.0.40.0130.07719.98
7.0.30.0200.04320.15
7.0.20.0230.04720.18
7.0.10.0230.06720.19
7.0.00.0030.04720.29
5.6.280.0070.07320.90
5.6.210.0130.05020.50
5.6.200.0170.07718.17
5.6.190.0170.07020.66
5.6.180.0300.04720.27
5.6.170.0300.08020.50
5.6.160.0070.04020.51
5.6.150.0100.08018.23
5.6.140.0070.03718.18
5.6.130.0030.05718.16
5.6.120.0130.05721.10
5.6.110.0070.08320.99
5.6.100.0030.04021.13
5.6.90.0070.07321.09
5.6.80.0000.04320.36
5.6.70.0200.07320.39
5.5.350.0200.07320.40
5.5.340.0170.05017.89
5.5.330.0100.03720.56
5.5.320.0300.08320.29
5.5.310.0270.07020.28
5.5.300.0000.08318.01
5.5.290.0130.07317.95
5.5.280.0130.05020.87
5.5.270.0130.08020.79
5.5.260.0070.08320.86
5.5.250.0130.07720.54
5.5.240.0070.05020.15
5.4.450.0830.06019.64
5.4.440.0930.05019.47
5.4.430.0870.05719.54
5.4.420.0230.07019.60
5.4.410.0830.07019.02
5.4.400.1730.05318.75
5.4.390.1430.06018.46
5.4.380.0200.06318.52
5.4.370.0200.04718.52
5.4.360.0130.05018.73
5.4.350.0080.03611.98
5.4.340.0080.04611.97
5.4.320.0040.03712.46
5.4.310.0030.04112.46
5.4.300.0040.03712.46
5.4.290.0070.03912.46
5.4.280.0090.04112.36
5.4.270.0020.04012.35
5.4.260.0050.04512.35
5.4.250.0130.07018.71
5.4.240.0170.04318.66
5.4.230.0130.06318.90
5.4.220.0100.05318.86
5.4.210.0070.05318.85
5.4.200.0130.04318.90
5.4.190.0070.05718.99
5.4.180.0170.04319.00
5.4.170.0100.04718.69
5.4.160.0200.04018.86
5.4.150.0100.06318.86
5.4.140.0170.04016.26
5.4.130.0070.04716.30
5.4.120.0100.06016.29
5.4.110.0030.05316.40
5.4.100.0070.07016.20
5.4.90.0100.04316.20
5.4.80.0070.04716.45
5.4.70.0070.05316.44
5.4.60.0130.04316.29
5.4.50.0130.04316.23
5.4.40.0100.04316.50
5.4.30.0030.05316.31
5.4.20.0030.05316.16
5.4.10.0070.05316.43
5.4.00.0170.05315.75
5.3.290.0110.04112.80
5.3.280.0030.07014.54
5.3.270.0100.05014.50
5.3.260.0100.04714.46
5.3.250.0070.07714.48
5.3.240.0130.04314.70
5.3.230.0100.04714.61
5.3.220.0070.08014.59
5.3.210.0070.05014.58
5.3.200.0100.04714.56
5.3.190.0070.05014.27
5.3.180.0070.07714.57
5.3.170.0070.05014.59
5.3.160.0070.05014.72
5.3.150.0100.04314.45
5.3.140.0070.07714.56
5.3.130.0100.05014.55
5.3.120.0100.06314.25
5.3.110.0130.04714.56
5.3.100.0070.05014.06
5.3.90.0100.04314.04
5.3.80.0070.05013.96
5.3.70.0070.05313.90
5.3.60.0100.04314.02
5.3.50.0170.03713.80
5.3.40.0070.05013.97
5.3.30.0130.04013.77
5.3.20.0100.04313.71
5.3.10.0100.04313.67
5.3.00.0070.05013.64
5.2.170.0030.04011.30
5.2.160.0070.03711.08
5.2.150.0030.04311.24
5.2.140.0070.03710.91
5.2.130.0070.04011.02
5.2.120.0030.04011.12
5.2.110.0070.04011.02
5.2.100.0070.03711.21
5.2.90.0070.04011.25
5.2.80.0070.04010.93
5.2.70.0030.04310.98
5.2.60.0030.04310.97
5.2.50.0000.04710.92
5.2.40.0000.04311.14
5.2.30.0000.05010.98
5.2.20.0100.03710.96
5.2.10.0100.03310.87
5.2.00.0000.04310.80
5.1.60.0100.02710.02
5.1.50.0030.0379.85
5.1.40.0100.0309.89
5.1.30.0100.03710.32
5.1.20.0000.04010.36
5.1.10.0100.04710.30
5.1.00.0130.0279.98
5.0.50.0000.0308.52
5.0.40.0070.0378.26
5.0.30.0100.0438.16
5.0.20.0070.0238.11
5.0.10.0030.0278.09
5.0.00.0030.0408.21
4.4.90.0000.0237.36
4.4.80.0000.0237.36
4.4.70.0030.0207.36
4.4.60.0000.0237.36
4.4.50.0000.0237.36
4.4.40.0030.0337.36
4.4.30.0000.0237.36
4.4.20.0030.0207.36
4.4.10.0000.0237.36
4.4.00.0030.0407.36
4.3.110.0030.0207.36
4.3.100.0070.0237.36
4.3.90.0030.0207.36
4.3.80.0070.0307.36
4.3.70.0000.0237.36
4.3.60.0030.0207.36
4.3.50.0030.0307.36
4.3.40.0030.0307.36
4.3.30.0000.0237.36
4.3.20.0000.0307.36
4.3.10.0000.0237.36
4.3.00.0230.0236.71

preferences:
41.38 ms | 401 KiB | 5 Q