3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mock = [ 'foo' => null ]; foreach ($mock as &$item) { $item = 'foo'; } $mockCopy = $mock; var_dump("after assignment", $mock, $mockCopy); $mockCopy['foo_copy'] = $mock['foo']; var_dump("after foo_copy", $mock, $mockCopy); $mockCopy['foo'] = 'bar'; var_dump("after foo=bar", $mock, $mockCopy); var_dump($mock['foo']);

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)
8.3.60.0120.00318.30
8.3.50.0130.00522.79
8.3.40.0130.00318.64
8.3.30.0040.01118.73
8.3.20.0070.00021.96
8.3.10.0060.00321.85
8.3.00.0040.00422.11
8.2.180.0120.00318.16
8.2.170.0110.00419.07
8.2.160.0100.00322.10
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00418.16
8.2.120.0040.00426.35
8.2.110.0110.00019.39
8.2.100.0030.00717.72
8.2.90.0000.00818.22
8.2.80.0050.00220.32
8.2.70.0000.00817.93
8.2.60.0040.00418.09
8.2.50.0000.00818.10
8.2.40.0040.00420.58
8.2.30.0000.00719.22
8.2.20.0040.00418.11
8.2.10.0040.00418.11
8.2.00.0040.00417.76
8.1.280.0090.00625.92
8.1.270.0150.00422.06
8.1.260.0020.00526.35
8.1.250.0070.00028.09
8.1.240.0110.00020.76
8.1.230.0040.00820.97
8.1.220.0080.00017.76
8.1.210.0030.00618.77
8.1.200.0000.00817.35
8.1.190.0030.00617.13
8.1.180.0050.00318.10
8.1.170.0070.00418.66
8.1.160.0060.00318.86
8.1.150.0040.00420.14
8.1.140.0040.00419.62
8.1.130.0030.00318.94
8.1.120.0050.00317.40
8.1.110.0040.00417.41
8.1.100.0000.00817.41
8.1.90.0040.00417.46
8.1.80.0070.00017.48
8.1.70.0030.00317.36
8.1.60.0000.00817.63
8.1.50.0040.00417.48
8.1.40.0080.00017.51
8.1.30.0080.00317.57
8.1.20.0060.00317.55
8.1.10.0070.00017.50
8.1.00.0000.00717.34
8.0.300.0040.00419.98
8.0.290.0000.00716.63
8.0.280.0000.00818.44
8.0.270.0070.00016.77
8.0.260.0040.00417.17
8.0.250.0040.00416.97
8.0.240.0030.00616.97
8.0.230.0030.00316.89
8.0.220.0000.00716.89
8.0.210.0040.00416.92
8.0.200.0030.00616.95
8.0.190.0040.00416.96
8.0.180.0050.00216.90
8.0.170.0000.00716.87
8.0.160.0050.00216.87
8.0.150.0040.00416.72
8.0.140.0040.00416.76
8.0.130.0000.00613.32
8.0.120.0050.00216.84
8.0.110.0040.00416.79
8.0.100.0000.00716.68
8.0.90.0040.00416.74
8.0.80.0120.00916.90
8.0.70.0040.00416.75
8.0.60.0040.00416.72
8.0.50.0040.00416.77
8.0.30.0150.00317.23
8.0.20.0090.01217.40
8.0.10.0000.00816.87
8.0.00.0100.00716.63
7.4.330.0050.00015.55
7.4.320.0030.00316.50
7.4.300.0060.00016.40
7.4.290.0040.00416.51
7.4.280.0040.00416.43
7.4.270.0000.00716.59
7.4.260.0050.00516.56
7.4.250.0000.00716.54
7.4.240.0030.00316.49
7.4.230.0000.00716.50
7.4.220.0080.01116.57
7.4.210.0170.00016.67
7.4.200.0070.00016.57
7.4.160.0030.01316.50
7.4.150.0150.00317.40
7.4.140.0070.01217.86
7.4.130.0070.01116.47
7.4.120.0120.01216.52
7.4.110.0000.01716.62
7.4.100.0120.00916.52
7.4.90.0160.00416.57
7.4.80.0160.00019.39
7.4.70.0090.01416.33
7.4.60.0060.01016.53
7.4.50.0040.01116.32
7.4.40.0150.00916.52
7.4.30.0150.00316.28
7.4.00.0080.00514.60
7.3.330.0030.00313.18
7.3.320.0000.00513.07
7.3.310.0050.00216.46
7.3.300.0060.00016.31
7.3.290.0060.00816.29
7.3.280.0120.00616.30
7.3.270.0040.01517.40
7.3.260.0160.00116.33
7.3.250.0110.00816.38
7.3.240.0090.00816.43
7.3.230.0060.01216.52
7.3.210.0090.00916.21
7.3.200.0170.00019.39
7.3.190.0070.01016.34
7.3.180.0140.00416.43
7.3.170.0100.01416.41
7.3.160.0100.00716.53
7.3.120.0000.01914.75
7.3.110.0110.00614.89
7.3.100.0110.00314.70
7.3.90.0030.00914.79
7.3.80.0000.00914.49
7.3.70.0070.00714.86
7.3.60.0040.00714.66
7.3.50.0000.01314.94
7.3.40.0070.00714.75
7.3.30.0070.00414.86
7.3.20.0000.01516.74
7.3.10.0040.01116.74
7.3.00.0030.01016.66
7.2.330.0150.00416.78
7.2.320.0100.01416.51
7.2.310.0110.01416.76
7.2.300.0030.02016.50
7.2.290.0110.00716.73
7.2.250.0100.01015.24
7.2.240.0040.01615.23
7.2.230.0040.00814.92
7.2.220.0070.00314.81
7.2.210.0000.01114.68
7.2.200.0070.00714.88
7.2.190.0060.00915.16
7.2.180.0000.01314.95
7.2.170.0060.00615.04
7.2.60.0030.00816.97
7.1.330.0060.00915.93
7.1.320.0060.00316.07
7.1.310.0080.00815.79
7.1.300.0060.00915.57
7.1.290.0070.00315.74
7.1.280.0070.00715.81
7.1.270.0060.00315.93
7.1.260.0000.01015.83
7.1.200.0060.00915.52
7.1.70.0040.00416.98
7.1.60.0060.00917.18
7.1.10.0100.08022.22
7.1.00.0070.06322.30
7.0.200.0150.01216.69
7.0.150.0100.07721.90
7.0.140.0130.05321.82
7.0.130.0130.05321.80
7.0.120.0100.05721.86
7.0.110.0030.06321.86
7.0.100.0100.08021.82
7.0.90.0030.08721.83
7.0.80.0070.08021.84
7.0.70.0070.06721.87
7.0.60.0100.05721.79
7.0.50.0100.05021.80
7.0.40.0070.05721.95
7.0.30.0170.04721.88
7.0.20.0130.05021.83
7.0.10.0100.06021.88
7.0.00.0070.06721.84

preferences:
63.27 ms | 401 KiB | 5 Q