3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump([ $original_set = [ 'arrayobject' => new arrayobject( [3] ), 'reference?' => [5] ], $original_serialized = serialize( $original_set ), $original_unserialized = unserialize( $original_serialized ), $withreference_serialized = preg_replace( '/a:1:{i:0;i:5;}}/', 'R:4;}', $original_serialized ), $withreference_unserialized = unserialize( $withreference_serialized ), $withreference_unserialized['arrayobject'][9] = 8, $withreference_unserialized, $withreference_unserialized['arrayobject'][9] === $withreference_unserialized['reference'][9] ? 'looks like a reference' : 'does not look like a reference' , ]) ;

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)
8.3.60.0140.00718.43
8.3.50.0130.00621.20
8.3.40.0120.00318.97
8.3.30.0070.00718.81
8.3.20.0040.00420.29
8.3.10.0040.00421.85
8.3.00.0040.00420.17
8.2.180.0090.00918.29
8.2.170.0140.00322.96
8.2.160.0000.01419.51
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0050.00317.88
8.2.110.0040.00720.98
8.2.100.0040.00817.91
8.2.90.0060.00317.97
8.2.80.0060.00318.98
8.2.70.0080.00017.88
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0040.00419.34
8.2.30.0040.00422.36
8.2.20.0050.00317.88
8.2.10.0000.00718.14
8.2.00.0040.00418.04
8.1.280.0110.00425.92
8.1.270.0100.00323.76
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0100.00320.74
8.1.230.0080.00420.97
8.1.220.0030.00617.74
8.1.210.0080.00018.83
8.1.200.0000.00917.48
8.1.190.0050.00317.48
8.1.180.0040.00418.10
8.1.170.0040.00418.59
8.1.160.0030.00622.06
8.1.150.0050.00318.98
8.1.140.0000.00817.50
8.1.130.0000.00717.80
8.1.120.0020.00517.55
8.1.110.0040.00417.53
8.1.100.0040.00417.61
8.1.90.0000.00817.65
8.1.80.0030.00617.63
8.1.70.0030.00517.52
8.1.60.0000.00817.79
8.1.50.0040.00417.75
8.1.40.0040.00417.71
8.1.30.0000.00817.84
8.1.20.0060.00317.84
8.1.10.0000.00917.73
8.1.00.0050.00317.73
8.0.300.0080.00020.01
8.0.290.0030.00916.63
8.0.280.0080.00018.45
8.0.270.0030.00317.15
8.0.260.0040.00417.17
8.0.250.0000.00717.20
8.0.240.0030.00317.20
8.0.230.0040.00417.19
8.0.220.0030.00317.10
8.0.210.0040.00417.15
8.0.200.0040.00417.15
8.0.190.0000.00917.16
8.0.180.0000.00817.20
8.0.170.0000.00817.15
8.0.160.0060.00317.14
8.0.150.0080.00017.02
8.0.140.0040.00417.11
8.0.130.0060.00413.59
8.0.120.0040.00417.13
8.0.110.0030.00517.04
8.0.100.0040.00416.93
8.0.90.0040.00416.95
8.0.80.0150.00017.08
8.0.70.0050.00217.14
8.0.60.0040.00416.99
8.0.50.0040.00416.93
8.0.30.0100.00917.45
8.0.20.0110.00917.45
8.0.10.0050.00217.18
8.0.00.0100.00717.10
7.4.330.0050.00015.08
7.4.320.0000.00616.87
7.4.300.0060.00016.77
7.4.290.0070.00016.78
7.4.280.0050.00316.58
7.4.270.0070.00016.61
7.4.260.0000.00716.64
7.4.250.0000.00716.73
7.4.240.0020.00616.74
7.4.230.0000.00716.90
7.4.220.0070.01116.72
7.4.210.0120.00316.90
7.4.200.0030.00316.61
7.4.160.0070.01116.85
7.4.150.0120.00617.40
7.4.140.0110.01017.86
7.4.130.0110.01016.80
7.4.120.0100.01416.72
7.4.110.0140.01016.94
7.4.100.0100.01316.69
7.4.90.0120.00616.58
7.4.80.0090.00919.39
7.4.70.0100.00616.64
7.4.60.0100.00716.71
7.4.50.0060.00316.87
7.4.40.0100.01116.88
7.4.30.0140.00416.80
7.4.00.0030.00815.27
7.3.330.0030.00313.24
7.3.320.0060.00013.34
7.3.310.0040.00416.45
7.3.300.0000.00716.56
7.3.290.0060.01016.52
7.3.280.0110.00916.59
7.3.270.0150.00717.40
7.3.260.0130.00716.56
7.3.250.0120.00616.73
7.3.240.0130.01016.81
7.3.230.0080.00916.80
7.3.210.0110.00816.54
7.3.200.0090.00916.68
7.3.190.0100.00716.64
7.3.180.0120.01116.71
7.3.170.0120.00916.70
7.3.160.0110.01116.49
7.2.330.0070.01416.75
7.2.320.0100.01016.73
7.2.310.0080.01116.81
7.2.300.0110.01816.84
7.2.290.0060.01816.65
7.2.60.0130.00316.91
7.2.00.0090.00319.54
7.1.200.0040.00815.86
7.1.100.0080.00618.35
7.1.70.0000.00717.28
7.1.60.0200.00319.14
7.1.50.0040.01517.31
7.1.00.0030.07722.36
7.0.200.0000.00816.66
7.0.60.0070.08020.01
7.0.50.0030.05017.87
7.0.40.0030.06719.85
7.0.30.0100.05319.77
7.0.20.0200.05319.82
7.0.10.0100.04719.82
7.0.00.0170.07319.89
5.6.280.0030.06021.12
5.6.210.0070.08320.73
5.6.200.0030.05318.22
5.6.190.0100.05720.60
5.6.180.0330.08020.77
5.6.170.0230.07720.33
5.6.160.0030.04720.63
5.6.150.0000.08018.20
5.6.140.0030.04018.21
5.6.130.0030.05718.11
5.6.120.0100.07021.08
5.6.110.0170.07321.01
5.6.100.0030.05021.08
5.6.90.0130.08321.07
5.6.80.0070.07020.37
5.5.350.0070.07720.52
5.5.340.0070.07718.01
5.5.330.0130.07720.19
5.5.320.3900.03720.22
5.5.310.0200.03720.29
5.5.300.0100.06717.97
5.5.290.0030.08318.01
5.5.280.0130.08020.89
5.5.270.0030.07020.75
5.5.260.0070.08020.75
5.5.250.0000.04320.79
5.5.240.0100.07020.36
5.4.450.0830.04719.11
5.4.440.0770.05719.57
5.4.430.0830.05019.12
5.4.420.0830.05019.54
5.4.410.0770.05319.00
5.4.400.0800.04719.09
5.4.390.0700.05719.20
5.4.380.0800.04318.94
5.4.370.0730.05018.94
5.4.360.0670.05719.20
5.4.350.0700.05319.04
5.4.340.0830.04719.22
5.4.320.0800.05319.07
5.4.310.0900.06319.17
5.4.300.0700.05719.02
5.4.290.0800.04319.09
5.4.280.0630.06018.84
5.4.270.0870.04019.02
5.4.260.0800.04718.94
5.4.250.0800.04319.25
5.4.240.0730.05319.19
5.4.230.0830.06019.14
5.4.220.0770.05718.98
5.4.210.0670.06018.75
5.4.200.0830.04318.93
5.4.190.0830.06719.08
5.4.180.0830.04719.09
5.4.170.0730.05019.23
5.4.160.0670.06019.20
5.4.150.0800.04718.78
5.4.140.0870.04016.44
5.4.130.0670.05016.46
5.4.120.0730.05016.27
5.4.110.0770.04716.44
5.4.100.0830.04316.41
5.4.90.0770.05016.31
5.4.80.0800.04016.39
5.4.70.0300.05716.46
5.4.60.0030.05716.41
5.4.50.0000.04016.42
5.4.40.0230.06316.32
5.4.30.0270.05016.43
5.4.20.0270.05016.31

preferences:
55.85 ms | 401 KiB | 5 Q