3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myarray = [ [ 'messageId' => '5ACE9D8841', 'sender' => 'john@doe.com' ], [ 'messageId' => '7EE67D8170', 'sender' => 'dan@doe.com' ], [ 'messageId' => '8095FD8836', 'sender' => 'cat@doe.com' ], [ 'messageId' => '7EE67D8170', 'dest' => 'mitch@doe.com', 'status' => 'sent', 'date' => '2021-02-01 11:06:55' ] ]; $result = []; foreach ($myarray as $row) { if (!isset($ref[$row['messageId']])) { $ref[$row['messageId']] = $row; $result[] = &$ref[$row['messageId']]; } else { $ref[$row['messageId']] += $row; } } var_export($result);

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)
8.5.00.0090.01220.14
8.4.150.0030.00014.05
8.4.140.0070.01417.38
8.4.130.0130.00717.64
8.4.120.0130.00720.74
8.4.110.0100.00918.70
8.4.100.0050.00417.81
8.4.90.0070.00220.58
8.4.80.0120.00724.29
8.4.70.0130.00918.96
8.4.60.0060.01520.63
8.4.50.0100.00720.48
8.4.40.0130.00719.49
8.4.30.0150.00419.08
8.4.20.0160.00319.61
8.4.10.0080.00824.03
8.3.280.0100.01018.62
8.3.270.0080.01116.64
8.3.260.0100.00916.43
8.3.250.0080.00218.76
8.3.240.0070.00316.65
8.3.230.0070.01216.66
8.3.220.0090.00918.97
8.3.210.0110.00818.42
8.3.200.0040.00516.86
8.3.190.0070.01517.34
8.3.180.0090.01119.00
8.3.170.0060.01219.15
8.3.160.0040.01417.12
8.3.150.0130.00617.14
8.3.140.0000.00816.70
8.3.130.0060.00316.47
8.3.120.0130.00620.89
8.3.110.0030.00916.50
8.3.100.0070.00316.67
8.3.90.0040.00426.77
8.3.80.0090.00018.30
8.3.70.0090.00618.65
8.3.60.0070.00718.41
8.3.50.0070.01518.31
8.3.40.0030.01023.73
8.3.30.0040.01118.82
8.3.20.0030.00524.18
8.3.10.0060.00324.66
8.3.00.0000.00726.16
8.2.290.0120.00716.89
8.2.280.0110.00818.44
8.2.270.0110.00416.62
8.2.260.0000.00816.92
8.2.250.0100.00016.89
8.2.240.0040.00418.27
8.2.230.0130.00720.94
8.2.220.0000.00824.06
8.2.210.0110.00326.77
8.2.200.0060.00318.41
8.2.190.0060.00916.63
8.2.180.0130.00716.63
8.2.170.0040.01118.90
8.2.160.0090.00922.96
8.2.150.0000.00725.66
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00426.16
8.2.110.0130.00322.21
8.2.100.0060.00617.78
8.2.90.0030.00617.88
8.2.80.0000.00818.91
8.2.70.0000.00918.00
8.2.60.0000.00917.63
8.2.50.0040.00417.63
8.2.40.0000.00819.47
8.2.30.0100.00217.66
8.2.20.0050.00317.78
8.2.10.0120.00417.70
8.2.00.0080.00817.80
8.1.330.0130.00616.19
8.1.320.0120.00917.82
8.1.310.0120.00616.66
8.1.300.0060.00316.41
8.1.290.0040.00430.84
8.1.280.0110.00425.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0090.00023.90
8.1.230.0080.00418.98
8.1.220.0050.00317.78
8.1.210.0050.00318.77
8.1.200.0040.00417.35
8.1.190.0030.00517.23
8.1.180.0080.00018.10
8.1.170.0040.00417.62
8.1.160.0100.00617.41
8.1.150.0130.00317.46
8.1.140.0100.00617.46
8.1.130.0150.00017.44
8.1.120.0160.00017.52
8.1.110.0120.00317.53
8.1.100.0080.00817.48
8.1.90.0100.00517.55
8.1.80.0100.00517.48
8.1.70.0050.00917.52
8.1.60.0110.00517.55
8.1.50.0180.00017.46
8.1.40.0120.00617.66
8.1.30.0070.01117.58
8.1.20.0130.00617.65
8.1.10.0140.00317.59
8.1.00.0150.00217.45
8.0.300.0000.00718.77
8.0.290.0040.00416.88
8.0.280.0120.00416.95
8.0.270.0100.00516.76
8.0.260.0080.00816.90
8.0.250.0150.00016.90
8.0.240.0090.00416.94
8.0.230.0050.01016.81
8.0.220.0090.00516.79
8.0.210.0000.01116.87
8.0.200.0060.00916.85
8.0.190.0110.00316.96
8.0.180.0130.00016.91
8.0.170.0130.00316.83
8.0.160.0090.00616.87
8.0.150.0040.01116.94
8.0.140.0090.00516.76
8.0.130.0100.00316.91
8.0.120.0150.00016.76
8.0.110.0060.00916.88
8.0.100.0110.00016.91
8.0.90.0050.00516.79
8.0.80.0020.00816.73
8.0.70.0090.00516.84
8.0.60.0090.00716.95
8.0.50.0090.00516.81
8.0.30.0100.00516.86
8.0.20.0090.00516.99
8.0.10.0000.01417.01

preferences:
103.28 ms | 403 KiB | 5 Q