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)
8.3.60.0120.00618.56
8.3.50.0130.01321.21
8.3.40.0110.01119.04
8.3.30.0070.00719.10
8.3.20.0030.00520.16
8.3.10.0030.00521.86
8.3.00.0040.00420.35
8.2.180.0150.00316.88
8.2.170.0090.00622.96
8.2.160.0060.00920.22
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00417.75
8.2.110.0030.00722.13
8.2.100.0120.00017.80
8.2.90.0000.00819.26
8.2.80.0050.00317.97
8.2.70.0000.00917.88
8.2.60.0000.00818.04
8.2.50.0050.00318.07
8.2.40.0080.00019.34
8.2.30.0070.00022.50
8.2.20.0080.00018.00
8.2.10.0070.00018.16
8.2.00.0040.00418.07
8.1.280.0110.00325.92
8.1.270.0080.00023.91
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00322.66
8.1.230.0030.00917.64
8.1.220.0040.00417.79
8.1.210.0000.00918.77
8.1.200.0090.00017.48
8.1.190.0060.00317.48
8.1.180.0030.00618.10
8.1.170.0030.00618.66
8.1.160.0000.00722.00
8.1.150.0000.00718.89
8.1.140.0080.00017.57
8.1.130.0040.00417.79
8.1.120.0040.00417.54
8.1.110.0000.00717.63
8.1.100.0060.00317.63
8.1.90.0080.00017.68
8.1.80.0050.00317.66
8.1.70.0030.00317.69
8.1.60.0000.00817.66
8.1.50.0050.00317.65
8.1.40.0030.00517.59
8.1.30.0000.00817.91
8.1.20.0000.00817.74
8.1.10.0080.00017.80
8.1.00.0070.00317.70
8.0.300.0070.00018.77
8.0.290.0040.00417.00
8.0.280.0030.00318.49
8.0.270.0070.00017.29
8.0.260.0000.00617.29
8.0.250.0000.00717.09
8.0.240.0050.00217.07
8.0.230.0000.00717.22
8.0.220.0000.00717.14
8.0.210.0040.00417.05
8.0.200.0070.00017.24
8.0.190.0050.00617.23
8.0.180.0000.00717.04
8.0.170.0040.00417.17
8.0.160.0000.00717.02
8.0.150.0070.00017.07
8.0.140.0000.00717.11
8.0.130.0060.00313.55
8.0.120.0040.00416.96
8.0.110.0000.00717.09
8.0.100.0000.00716.98
8.0.90.0000.00717.18
8.0.80.0000.01517.04
8.0.70.0000.00717.05
8.0.60.0040.00417.13
8.0.50.0000.00716.89
8.0.30.0130.00417.44
8.0.20.0140.00517.40
8.0.10.0000.00717.06
8.0.00.0070.01016.97
7.4.330.0000.00515.12
7.4.320.0040.00416.83
7.4.300.0000.00616.73
7.4.290.0040.00416.74
7.4.280.0060.00316.73
7.4.270.0050.00316.74
7.4.260.0040.00416.69
7.4.250.0040.00416.66
7.4.240.0030.00416.79
7.4.230.0080.00016.73
7.4.220.0120.01516.77
7.4.210.0090.00616.67
7.4.200.0040.00416.76
7.4.160.0060.01616.65
7.4.150.0000.01817.40
7.4.140.0120.01017.86
7.4.130.0120.00916.81
7.4.120.0120.00916.86
7.4.110.0100.01016.72
7.4.100.0140.00716.81
7.4.90.0070.01116.75
7.4.80.0120.00919.39
7.4.70.0100.00716.86
7.4.60.0130.00316.86
7.4.50.0080.00316.54
7.4.40.0180.00316.75
7.4.30.0100.00716.79
7.4.00.0060.00615.13
7.3.330.0060.00013.22
7.3.320.0000.00713.32
7.3.310.0050.00216.15
7.3.300.0040.00416.39
7.3.290.0110.00716.35
7.3.280.0090.00916.36
7.3.270.0180.00217.40
7.3.260.0100.01416.59
7.3.250.0050.01516.41
7.3.240.0110.00916.54
7.3.230.0070.01016.56
7.3.210.0130.00916.68
7.3.200.0040.01416.48
7.3.190.0080.00816.36
7.3.180.0090.00916.42
7.3.170.0090.01516.60
7.3.160.0060.01016.48
7.2.330.0140.00716.85
7.2.320.0150.00416.85
7.2.310.0030.01616.83
7.2.300.0050.01916.75
7.2.290.0090.00916.68
7.2.60.0000.01216.81
7.2.00.0340.00419.37
7.1.200.0070.00715.88
7.1.100.0000.01216.39
7.1.70.0030.01017.30
7.1.60.0100.01419.14
7.1.50.0060.01617.08
7.1.00.0070.07322.28
7.0.200.0000.01116.84
7.0.100.0230.07019.94
7.0.90.0070.08719.85
7.0.80.0100.08019.86
7.0.70.0100.05020.12
7.0.60.0000.07019.77
7.0.50.0230.08720.24
7.0.40.0070.06320.19
7.0.30.0070.07720.10
7.0.20.0070.08020.12
7.0.10.0130.08020.09
7.0.00.0030.05720.13
5.6.280.0070.05021.12
5.6.250.0070.05020.62
5.6.240.0070.08720.69
5.6.230.0130.07320.68
5.6.220.0070.07720.48
5.6.210.0230.06720.74
5.6.200.0130.07321.05
5.6.190.0030.05321.02
5.6.180.0030.04321.05
5.6.170.0100.04321.11
5.6.160.0030.07721.10
5.6.150.0130.04320.95
5.6.140.0070.06721.04
5.6.130.0100.05020.92
5.6.120.0070.08321.10
5.6.110.0130.06321.09
5.6.100.0200.07021.02
5.6.90.0170.07321.07
5.6.80.0100.08020.44
5.6.70.0100.06020.50
5.6.60.0170.07720.44
5.6.50.0000.06020.44
5.6.40.0130.07020.32
5.6.30.0100.06320.30
5.6.20.0100.04720.39
5.6.10.0070.07720.52
5.6.00.0070.06720.37
5.5.380.0030.07020.38
5.5.370.0170.03720.49
5.5.360.0030.08320.42
5.5.350.0100.04720.33
5.5.340.0070.07320.88
5.5.330.0030.08320.79
5.5.320.0030.04020.87
5.5.310.0070.07020.77
5.5.300.0070.06020.77
5.5.290.0100.08320.89
5.5.280.0030.09020.86
5.5.270.0030.09020.88
5.5.260.0070.05020.81
5.5.250.0070.08020.68
5.5.240.0200.06320.30
5.5.230.0070.08020.16
5.5.220.0070.07720.24
5.5.210.0100.07720.29
5.5.200.0170.06720.10
5.5.190.0130.07020.21
5.5.180.0070.07720.25
5.5.160.0100.07020.25
5.5.150.0100.07320.11
5.5.140.0130.05320.25
5.5.130.0100.08320.24
5.5.120.0070.04720.20
5.5.110.0100.06020.21
5.5.100.0070.06719.94
5.5.90.0030.04020.09
5.5.80.0000.06020.14
5.5.70.0170.06719.95
5.5.60.0070.06320.04
5.5.50.0170.07020.14
5.5.40.0030.08020.05
5.5.30.0070.08020.06
5.5.20.0070.08020.09
5.5.10.0030.08319.96
5.5.00.0270.05319.94
5.4.450.0130.07019.38
5.4.440.0100.06719.34
5.4.430.0170.07719.47
5.4.420.0070.06319.46
5.4.410.0130.06719.42
5.4.400.0070.05719.24
5.4.390.0070.08018.92
5.4.380.0100.07019.12
5.4.370.0030.07318.96
5.4.360.0070.05019.03
5.4.350.0000.06319.24
5.4.340.0170.06019.13
5.4.320.0030.05719.12
5.4.310.0130.07019.06
5.4.300.0100.06719.11
5.4.290.0130.07019.05
5.4.280.0070.07719.12
5.4.270.0170.06018.81
5.4.260.0170.06018.97
5.4.250.0000.04719.11
5.4.240.0130.06019.09
5.4.230.0070.07319.02
5.4.220.0130.07318.77
5.4.210.0030.07319.04
5.4.200.0070.04719.02
5.4.190.0070.04319.04
5.4.180.0100.07319.19
5.4.170.0030.05319.16
5.4.160.0100.07019.01
5.4.150.0030.08019.01
5.4.140.0030.08016.31
5.4.130.0030.03716.34
5.4.120.0030.08316.32
5.4.110.0100.06016.28
5.4.100.0070.07016.22
5.4.90.0130.03316.44
5.4.80.0030.07716.36
5.4.70.0100.07016.43
5.4.60.0030.04716.41
5.4.50.0100.06316.21
5.4.40.0100.07316.39
5.4.30.0070.07716.29
5.4.20.0100.03716.41
5.4.10.0100.04016.34
5.4.00.0070.07315.77

preferences:
47.53 ms | 401 KiB | 5 Q