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)
8.3.60.0150.00418.68
8.3.50.0040.01116.56
8.3.40.0040.01118.92
8.3.30.0140.00019.09
8.3.20.0050.00320.39
8.3.10.0040.00421.60
8.3.00.0070.00020.25
8.2.180.0030.01318.66
8.2.170.0070.00722.96
8.2.160.0030.01020.52
8.2.150.0070.01425.66
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0060.00317.88
8.2.110.0070.00422.30
8.2.100.0070.00418.05
8.2.90.0000.00819.20
8.2.80.0000.00817.97
8.2.70.0040.00417.88
8.2.60.0000.00818.05
8.2.50.0030.00618.07
8.2.40.0050.00319.23
8.2.30.0000.00722.40
8.2.20.0040.00417.98
8.2.10.0040.00418.01
8.2.00.0050.00218.27
8.1.280.0040.01125.92
8.1.270.0110.00723.96
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0050.00522.56
8.1.230.0120.00017.78
8.1.220.0000.00817.78
8.1.210.0040.00418.77
8.1.200.0000.01017.60
8.1.190.0080.00017.38
8.1.180.0000.00818.10
8.1.170.0040.00418.77
8.1.160.0000.00722.13
8.1.150.0040.00418.88
8.1.140.0000.00817.53
8.1.130.0000.00717.66
8.1.120.0030.00417.67
8.1.110.0070.00017.65
8.1.100.0000.00817.52
8.1.90.0000.00717.56
8.1.80.0000.00817.53
8.1.70.0030.00317.51
8.1.60.0000.00717.64
8.1.50.0050.00417.73
8.1.40.0080.00017.71
8.1.30.0030.00517.85
8.1.20.0040.00417.81
8.1.10.0040.00417.76
8.1.00.0030.00517.54
8.0.300.0000.00918.77
8.0.290.0040.00417.13
8.0.280.0030.00318.40
8.0.270.0030.00317.23
8.0.260.0000.00617.27
8.0.250.0030.00517.21
8.0.240.0070.00317.18
8.0.230.0040.00417.20
8.0.220.0030.00317.02
8.0.210.0050.00317.04
8.0.200.0030.00517.05
8.0.190.0120.00017.12
8.0.180.0030.00517.16
8.0.170.0040.00417.10
8.0.160.0050.00317.17
8.0.150.0040.00417.10
8.0.140.0070.00017.07
8.0.130.0060.00313.63
8.0.120.0050.00317.18
8.0.110.0000.00817.07
8.0.100.0040.00416.94
8.0.90.0040.00317.13
8.0.80.0040.01117.00
8.0.70.0000.00717.04
8.0.60.0050.00317.23
8.0.50.0000.00716.97
8.0.30.0110.00817.50
8.0.20.0140.01117.50
8.0.10.0040.00417.29
8.0.00.0120.00516.92
7.4.330.0000.00515.17
7.4.320.0030.00316.63
7.4.300.0030.00316.64
7.4.290.0030.00316.76
7.4.280.0060.00316.74
7.4.270.0000.00616.73
7.4.260.0050.00216.75
7.4.250.0040.00416.82
7.4.240.0040.00316.79
7.4.230.0040.00416.77
7.4.220.0100.00716.75
7.4.210.0060.00916.78
7.4.200.0000.00716.94
7.4.160.0040.01216.78
7.4.150.0030.01317.40
7.4.140.0170.00617.86
7.4.130.0090.01016.81
7.4.120.0100.00816.69
7.4.110.0060.01216.61
7.4.100.0060.01516.79
7.4.90.0070.01416.72
7.4.80.0090.00619.39
7.4.70.0110.00516.89
7.4.60.0110.00416.53
7.4.50.0050.00016.59
7.4.40.0180.00016.79
7.4.30.0090.00916.86
7.4.00.0100.00714.98
7.3.330.0000.00513.27
7.3.320.0060.00013.36
7.3.310.0050.00216.52
7.3.300.0000.00816.56
7.3.290.0060.00816.56
7.3.280.0070.01116.59
7.3.270.0060.01217.40
7.3.260.0160.00816.51
7.3.250.0090.00916.54
7.3.240.0160.00316.56
7.3.230.0000.01716.70
7.3.210.0120.00916.59
7.3.200.0100.01016.68
7.3.190.0100.00616.45
7.3.180.0080.00816.71
7.3.170.0130.01016.59
7.3.160.0170.00616.50
7.3.10.0100.00716.62
7.3.00.0050.01216.58
7.2.330.0140.00416.76
7.2.320.0110.00716.86
7.2.310.0130.00716.69
7.2.300.0030.01616.75
7.2.290.0070.01316.79
7.2.130.0090.01016.82
7.2.120.0080.00716.89
7.2.110.0120.00516.73
7.2.100.0110.00316.65
7.2.90.0110.00916.69
7.2.80.0090.01116.92
7.2.70.0060.01316.88
7.2.60.0090.00717.04
7.2.50.0160.00616.76
7.2.40.0090.01216.74
7.2.30.0110.00816.67
7.2.20.0100.00916.72
7.2.10.0090.01216.82
7.2.00.0090.00717.84
7.1.250.0090.00615.68
7.1.200.0030.01015.97
7.1.100.0040.01118.50
7.1.70.0000.00817.44
7.1.60.0030.01819.14
7.1.50.0040.00917.26
7.1.00.0070.07322.23
7.0.200.0000.00716.74
7.0.60.0070.03719.98
7.0.50.0030.04317.89
7.0.40.0030.04319.88
7.0.30.0170.08019.93
7.0.20.0270.04719.83
7.0.10.0070.04019.75
7.0.00.0030.04319.83
5.6.210.0130.04720.74
5.6.200.0070.05018.22
5.6.190.0000.04720.60
5.6.180.0300.03020.33
5.6.170.0270.04020.38
5.6.160.0030.07320.63
5.6.150.0030.04318.09
5.6.140.0100.08018.11
5.6.130.0030.04018.17
5.6.120.0100.08320.95
5.6.110.0030.06021.01
5.6.100.0100.08021.01
5.6.90.0170.07321.07
5.6.80.0000.09020.50
5.5.350.0000.08720.37
5.5.340.0030.04017.88
5.5.330.0100.07720.12
5.5.320.3300.04320.29
5.5.310.0300.07320.29
5.5.300.0100.03317.91
5.5.290.0000.08017.89
5.5.280.0100.08020.79
5.5.270.0100.07720.86
5.5.260.0100.07320.87
5.5.250.0030.05720.68
5.5.240.0000.07720.25
5.4.450.0770.05319.13
5.4.440.0830.05019.13
5.4.430.0800.05719.49
5.4.420.0700.05719.49
5.4.410.0730.05719.27
5.4.400.0830.05319.25
5.4.390.0930.04719.19
5.4.380.0970.04018.94
5.4.370.0700.06019.20
5.4.360.0770.05319.02
5.4.350.0930.04318.80
5.4.340.0770.05019.17
5.4.320.0730.05319.25
5.4.310.0730.05019.25
5.4.300.0900.06018.81
5.4.290.0700.06719.09
5.4.280.0970.04319.05
5.4.270.0700.06319.09
5.4.260.0770.06719.26
5.4.250.0870.05018.84
5.4.240.0730.05719.13
5.4.230.0730.05019.24
5.4.220.0630.06018.79
5.4.210.0800.05019.17
5.4.200.0830.05318.93
5.4.190.0730.05719.07
5.4.180.0870.04719.14
5.4.170.0700.05319.21
5.4.160.0730.05319.07
5.4.150.0670.06019.05
5.4.140.0770.04716.33
5.4.130.0730.04716.41
5.4.120.0670.06716.27
5.4.110.0900.06316.22
5.4.100.0670.05716.50
5.4.90.0770.05716.20
5.4.80.0730.05016.44
5.4.70.0130.04316.46
5.4.60.0100.05716.45
5.4.50.0070.06716.36
5.4.40.0200.08016.43
5.4.30.0370.05316.20
5.4.20.0300.04016.45

preferences:
40.13 ms | 400 KiB | 5 Q