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['reference?'][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)
8.3.60.0150.00418.46
8.3.50.0100.00921.34
8.3.40.0040.01119.14
8.3.30.0120.00318.78
8.3.20.0040.00420.20
8.3.10.0050.00321.86
8.3.00.0040.00421.84
8.2.180.0060.00916.75
8.2.170.0080.00822.96
8.2.160.0150.00020.50
8.2.150.0060.00324.18
8.2.140.0000.00924.66
8.2.130.0040.00426.16
8.2.120.0030.00617.63
8.2.110.0000.01019.36
8.2.100.0030.00917.84
8.2.90.0030.00519.17
8.2.80.0080.00017.97
8.2.70.0090.00017.75
8.2.60.0040.00417.91
8.2.50.0000.00818.07
8.2.40.0000.01019.23
8.2.30.0070.00022.43
8.2.20.0000.00817.98
8.2.10.0070.00018.23
8.2.00.0000.00818.05
8.1.280.0070.00725.92
8.1.270.0030.01624.02
8.1.260.0050.00326.35
8.1.250.0020.00528.09
8.1.240.0060.00323.78
8.1.230.0040.00820.93
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0030.00617.48
8.1.190.0040.00417.47
8.1.180.0050.00318.10
8.1.170.0050.00318.58
8.1.160.0040.00422.00
8.1.150.0040.00418.94
8.1.140.0000.00817.50
8.1.130.0030.00317.74
8.1.120.0000.00717.63
8.1.110.0040.00417.58
8.1.100.0050.00317.61
8.1.90.0040.00417.61
8.1.80.0030.00517.61
8.1.70.0030.00317.69
8.1.60.0050.00317.70
8.1.50.0040.00417.63
8.1.40.0000.00817.61
8.1.30.0040.00417.75
8.1.20.0040.00417.79
8.1.10.0000.00717.69
8.1.00.0040.00417.70
8.0.300.0060.00318.77
8.0.290.0040.00417.00
8.0.280.0030.00318.43
8.0.270.0030.00317.30
8.0.260.0030.00317.31
8.0.250.0000.00717.20
8.0.240.0030.00617.17
8.0.230.0030.00317.16
8.0.220.0070.00016.99
8.0.210.0040.00417.04
8.0.200.0040.00417.18
8.0.190.0100.00017.09
8.0.180.0030.00517.15
8.0.170.0040.00417.18
8.0.160.0050.00217.18
8.0.150.0030.00517.06
8.0.140.0040.00417.09
8.0.130.0000.00913.54
8.0.120.0040.00417.13
8.0.110.0000.00717.10
8.0.100.0040.00417.13
8.0.90.0040.00416.94
8.0.80.0090.00617.00
8.0.70.0080.00017.23
8.0.60.0030.00617.18
8.0.50.0070.00016.99
8.0.30.0080.01017.32
8.0.20.0110.00817.46
8.0.10.0000.00817.13
8.0.00.0090.00816.98
7.4.330.0020.00215.08
7.4.320.0000.00616.79
7.4.300.0060.00016.72
7.4.290.0070.00016.72
7.4.280.0040.00416.82
7.4.270.0000.00716.59
7.4.260.0040.00316.74
7.4.250.0050.00216.65
7.4.240.0020.00516.80
7.4.230.0000.00716.60
7.4.220.0060.01316.68
7.4.210.0130.00816.93
7.4.200.0050.00316.83
7.4.160.0070.01716.59
7.4.150.0070.01617.40
7.4.140.0090.01217.86
7.4.130.0140.00516.73
7.4.120.0100.01216.75
7.4.110.0120.00616.67
7.4.100.0120.00616.82
7.4.90.0070.01016.88
7.4.80.0120.00319.39
7.4.70.0070.01016.89
7.4.60.0070.01016.88
7.4.50.0000.00716.89
7.4.40.0110.00616.78
7.4.30.0090.01316.86
7.4.00.0080.00815.12
7.3.330.0050.00013.33
7.3.320.0000.00513.52
7.3.310.0000.00816.68
7.3.300.0070.00016.60
7.3.290.0030.01216.51
7.3.280.0070.01216.60
7.3.270.0090.00917.40
7.3.260.0090.01316.50
7.3.250.0130.00716.58
7.3.240.0190.00316.80
7.3.230.0060.01216.61
7.3.210.0120.00616.68
7.3.200.0130.00516.58
7.3.190.0150.00316.65
7.3.180.0040.01216.50
7.3.170.0060.01316.57
7.3.160.0090.00916.58
7.2.330.0080.01516.80
7.2.320.0070.01616.63
7.2.310.0080.01116.68
7.2.300.0060.01216.73
7.2.290.0100.01016.76
7.2.60.0070.00717.12
7.2.00.0000.01319.67
7.1.200.0060.00916.05
7.1.100.0030.00918.37
7.1.70.0000.00817.02
7.1.60.0070.01319.14
7.1.50.0070.01016.97
7.1.00.0030.07322.20
7.0.200.0030.00616.64
7.0.60.0200.05021.81
7.0.50.0100.07017.86
7.0.40.0130.06719.76
7.0.30.0170.04019.84
7.0.20.0230.04319.85
7.0.10.0070.07319.82
7.0.00.0070.05319.89
5.6.280.0000.07021.07
5.6.210.0100.08020.73
5.6.200.0000.06018.19
5.6.190.0070.04720.39
5.6.180.0370.06720.61
5.6.170.0370.04320.44
5.6.160.0130.07020.54
5.6.150.0000.06318.19
5.6.140.0070.03718.24
5.6.130.0000.04318.27
5.6.120.0130.04721.02
5.6.110.0000.04320.89
5.6.100.0170.07720.88
5.6.90.0130.08021.13
5.6.80.0000.05720.51
5.5.350.4000.03320.53
5.5.340.0030.08018.04
5.5.330.0100.05320.29
5.5.320.3830.04320.21
5.5.310.0230.03320.26
5.5.300.0000.04717.98
5.5.290.0070.08017.96
5.5.280.0000.05320.90
5.5.270.0100.08020.95
5.5.260.0000.04320.79
5.5.250.0030.08720.56
5.5.240.0170.05020.25
5.4.450.0700.06319.64
5.4.440.0670.06319.57
5.4.430.0770.05319.56
5.4.420.0700.05719.41
5.4.410.0800.05019.40
5.4.400.0770.05019.07
5.4.390.0930.03719.25
5.4.380.0800.04719.09
5.4.370.0770.05719.20
5.4.360.0730.05719.20
5.4.350.0770.05719.20
5.4.340.0830.05018.84
5.4.320.0670.05719.09
5.4.310.0770.04319.09
5.4.300.0730.06019.08
5.4.290.0870.04019.24
5.4.280.0730.05319.26
5.4.270.0700.05719.25
5.4.260.0700.05719.26
5.4.250.0800.04718.84
5.4.240.0770.05319.19
5.4.230.0770.05018.91
5.4.220.0700.06018.82
5.4.210.0870.04319.08
5.4.200.0830.05019.17
5.4.190.0700.05719.23
5.4.180.0800.05019.23
5.4.170.0730.05719.18
5.4.160.0770.05019.06
5.4.150.0700.06318.90
5.4.140.0800.04716.39
5.4.130.0700.05016.34
5.4.120.0670.05016.33
5.4.110.0830.05316.50
5.4.100.0770.04716.56
5.4.90.0830.04716.42
5.4.80.0900.04016.45
5.4.70.0330.06016.44
5.4.60.0000.05716.54
5.4.50.0000.04016.53
5.4.40.0200.04716.45
5.4.30.0230.07316.37
5.4.20.0330.04016.42

preferences:
52.97 ms | 401 KiB | 5 Q