3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myExistingArray = []; for ($i = 0; $i < 100; $i++) { $myExistingArray[] = ['key1' => '1234', 'key2' => '56', 'count' => 1]; } $myNewArray = []; foreach ($myExistingArray as $item) { $myNewArray[$item['key1'] . '_' . $item['key2']] = $item['count']; }

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)
8.3.70.0040.01418.38
8.3.60.0150.00416.50
8.3.50.0100.00822.01
8.3.40.0140.00718.67
8.3.30.0100.00518.89
8.3.20.0080.00019.04
8.3.10.0000.00721.95
8.3.00.0000.00720.64
8.2.190.0070.00720.14
8.2.180.0120.00316.63
8.2.170.0140.00022.96
8.2.160.0110.00421.14
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00422.23
8.2.120.0040.00426.35
8.2.110.0040.00722.26
8.2.100.0000.01217.84
8.2.90.0090.00019.40
8.2.80.0080.00017.97
8.2.70.0060.00317.63
8.2.60.0040.00418.05
8.2.50.0040.00418.10
8.2.40.0030.00522.38
8.2.30.0020.00519.37
8.2.20.0060.00517.80
8.2.10.0050.00318.19
8.2.00.0060.00318.02
8.1.280.0070.01025.92
8.1.270.0100.00620.37
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0040.00420.64
8.1.230.0000.01117.83
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0060.00317.35
8.1.180.0100.00018.10
8.1.170.0000.00718.57
8.1.160.0000.00722.18
8.1.150.0070.00018.82
8.1.140.0080.00019.48
8.1.130.0050.00317.66
8.1.120.0080.00017.36
8.1.110.0030.00517.41
8.1.100.0050.00217.38
8.1.90.0000.00717.45
8.1.80.0050.00317.47
8.1.70.0080.00017.34
8.1.60.0040.00417.47
8.1.50.0060.00317.57
8.1.40.0050.00217.41
8.1.30.0000.00817.59
8.1.20.0020.00517.63
8.1.10.0030.00617.50
8.1.00.0000.00717.33
8.0.300.0040.00418.77
8.0.290.0070.00016.75
8.0.280.0070.00018.44
8.0.270.0030.00317.17
8.0.260.0060.00017.17
8.0.250.0030.00316.96
8.0.240.0070.00016.96
8.0.230.0030.00316.93
8.0.220.0000.00716.79
8.0.210.0040.00416.91
8.0.200.0000.00716.82
8.0.190.0040.00416.96
8.0.180.0040.00716.91
8.0.170.0000.00716.80
8.0.160.0080.00016.79
8.0.150.0030.00316.78
8.0.140.0030.00916.81
8.0.130.0030.00313.32
8.0.120.0070.00016.88
8.0.110.0070.00016.77
8.0.100.0000.00716.71
8.0.90.0030.00316.88
8.0.80.0040.01116.81
8.0.70.0040.00416.72
8.0.60.0000.00816.96
8.0.50.0040.00416.82
8.0.30.0160.00517.15
8.0.20.0100.00917.42
8.0.10.0040.00417.04
8.0.00.0100.00716.69
7.4.330.0030.00315.08
7.4.320.0030.00316.51
7.4.300.0030.00316.59
7.4.290.0030.00316.42
7.4.280.0030.00716.62
7.4.270.0030.00316.51
7.4.260.0000.00716.44
7.4.250.0100.00016.48
7.4.240.0030.00316.44
7.4.230.0040.00316.70
7.4.220.0030.01316.47
7.4.210.0140.00716.46
7.4.200.0080.00016.63
7.4.160.0060.00916.52
7.4.150.0100.01017.40
7.4.140.0060.01417.86
7.4.130.0130.00916.42
7.4.120.0060.01116.53
7.4.110.0060.01116.48
7.4.100.0130.00916.58
7.4.90.0030.01316.63
7.4.80.0100.00719.39
7.4.70.0080.00816.41
7.4.60.0160.00016.55
7.4.50.0060.00616.45
7.4.40.0130.00716.43
7.4.30.0080.01516.55
7.4.10.0110.00614.99
7.4.00.0100.00714.78
7.3.330.0000.00613.25
7.3.320.0050.00013.13
7.3.310.0000.00816.30
7.3.300.0030.00316.34
7.3.290.0030.00516.32
7.3.280.0130.00416.32
7.3.270.0160.00617.40
7.3.260.0110.00616.31
7.3.250.0120.00716.50
7.3.240.0050.01216.34
7.3.230.0060.01816.39
7.3.210.0070.01016.33
7.3.200.0160.00016.26
7.3.190.0120.00316.20
7.3.180.0160.00616.23
7.3.170.0170.00316.23
7.3.160.0060.01216.35
7.3.130.0030.01614.88
7.3.120.0070.00714.74
7.3.110.0070.01015.06
7.3.100.0020.01414.79
7.3.90.0050.01014.83
7.3.80.0050.01014.90
7.3.70.0020.01214.99
7.3.60.0060.00814.77
7.3.50.0050.00914.80
7.3.40.0040.00814.86
7.3.30.0050.01014.90
7.3.20.0030.01116.62
7.3.10.0080.00516.47
7.3.00.0050.00616.55
7.2.330.0030.01516.65
7.2.320.0040.01416.52
7.2.310.0060.00916.70
7.2.300.0100.01016.69
7.2.290.0030.01316.83
7.2.260.0030.01615.26
7.2.250.0050.01415.12
7.2.240.0050.01015.27
7.2.230.0060.00815.13
7.2.220.0070.00915.04
7.2.210.0030.01215.16
7.2.200.0030.01315.06
7.2.190.0090.00615.14
7.2.180.0100.00615.04
7.2.170.0090.00614.95
7.2.160.0050.00815.00
7.2.150.0030.01116.76
7.2.140.0030.01217.08
7.2.130.0070.00816.98
7.2.120.0050.01016.88
7.2.110.0020.01116.91
7.2.100.0060.00616.88
7.2.90.0040.01116.94
7.2.80.0090.00316.82
7.2.70.0060.00416.97
7.2.60.0040.01016.99
7.2.50.0000.01317.03
7.2.40.0070.01117.00
7.2.30.0070.00517.02
7.2.20.0060.01016.98
7.2.10.0040.00816.95
7.2.00.0070.00717.66
7.1.330.0050.00915.88
7.1.320.0060.00815.83
7.1.310.0070.00315.81
7.1.300.0040.01315.71
7.1.290.0070.00615.69
7.1.280.0060.00815.68
7.1.270.0020.01415.76
7.1.260.0020.01015.75
7.1.250.0090.00515.67
7.1.240.0030.01016.02
7.1.230.0060.00616.01
7.1.220.0040.01115.82
7.1.210.0080.00615.64
7.1.200.0070.00715.79
7.1.190.0090.00015.83
7.1.180.0130.00015.71
7.1.170.0000.00915.91
7.1.160.0100.00315.73
7.1.150.0000.01215.85
7.1.140.0120.00315.59
7.1.130.0060.00915.93
7.1.120.0090.00016.00
7.1.110.0060.00915.97
7.1.100.0070.00715.92
7.1.90.0060.00915.86
7.1.80.0050.00515.85
7.1.70.0050.00416.46
7.1.60.0020.01017.74
7.1.50.0040.00415.82
7.1.40.0000.01415.56
7.1.30.0120.00415.79
7.1.20.0060.00915.72
7.1.10.0030.00915.94
7.1.00.0050.03719.07
7.0.330.0030.01015.24
7.0.320.0030.01015.47
7.0.310.0080.00815.53
7.0.300.0060.00315.36
7.0.290.0040.00815.50
7.0.280.0030.01015.44
7.0.270.0070.00315.51
7.0.260.0030.01015.37
7.0.250.0000.00915.41
7.0.240.0090.00315.44
7.0.230.0060.00915.31
7.0.220.0070.00315.44
7.0.210.0030.00915.60
7.0.200.0130.00315.04
7.0.190.0040.00715.39
7.0.180.0110.00415.52
7.0.170.0080.00615.36
7.0.160.0130.00315.34
7.0.150.0040.00415.46
7.0.140.0040.01115.46
7.0.130.0060.00615.49
7.0.120.0030.01015.61
7.0.110.0000.00815.52
7.0.100.0030.00615.57
7.0.90.0240.04117.73
7.0.80.0200.03317.66
7.0.70.1100.03317.75
7.0.60.0200.03017.67
7.0.50.0170.03217.96
7.0.40.0230.03016.94
7.0.30.0220.03516.84
7.0.20.0250.04216.98
7.0.10.0130.04016.86
7.0.00.0270.03316.84
5.6.400.0030.00914.50
5.6.390.0060.00914.65
5.6.380.0030.00714.70
5.6.370.0070.00714.64
5.6.360.0090.00314.50
5.6.350.0120.00314.43
5.6.340.0120.00314.16
5.6.330.0110.00314.75
5.6.320.0070.00714.56
5.6.310.0030.00714.04
5.6.300.0060.00614.83
5.6.290.0060.00914.41
5.6.280.0110.00014.61
5.6.270.0060.00614.67
5.6.260.0040.00714.25
5.6.250.0030.01014.80
5.6.240.0100.02817.67
5.6.230.0070.03817.70
5.6.220.0080.03017.63
5.6.210.0120.03417.63
5.6.200.0120.03217.91
5.6.190.0080.03617.93
5.6.180.0080.03317.79
5.6.170.0100.03217.73
5.6.160.0080.04317.74
5.6.150.0090.04417.69
5.6.140.0080.04517.72
5.6.130.0080.04517.76
5.6.120.0140.04117.79
5.6.110.0140.04117.97
5.6.100.0070.04217.81
5.6.90.0070.03717.73
5.6.80.0100.04017.39
5.6.70.0030.03817.51
5.6.60.0070.03717.42
5.6.50.0080.04017.59
5.6.40.0130.02817.46
5.6.30.0090.03217.55
5.6.20.0070.03517.46
5.6.10.0050.03917.43
5.6.00.0130.02817.43

preferences:
62.05 ms | 401 KiB | 5 Q