3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ 'foo', 'foo', 'bar', 'baz', 'baz' ]; array_walk($arr, function (&$item, $k) use ($arr) { $lower = mb_strtolower($item, 'utf-8'); foreach ($arr as $i => $v) { var_dump($i, $k); if ($i !== $k && $v !== null && $lower === mb_strtolower($v, 'utf-8')) { $item = null; } } }); var_dump($arr);

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)
8.3.70.0070.01118.56
8.3.60.0100.00616.50
8.3.50.0100.01216.53
8.3.40.0110.00718.71
8.3.30.0090.00618.47
8.3.20.0060.00320.29
8.3.10.0080.00021.73
8.3.00.0050.00319.56
8.2.180.0000.01516.50
8.2.170.0090.00622.96
8.2.160.0110.00418.97
8.2.150.0030.00524.18
8.2.140.0070.00024.66
8.2.130.0050.00319.33
8.2.120.0050.00326.35
8.2.110.0030.00622.29
8.2.100.0030.01017.91
8.2.90.0030.00519.26
8.2.80.0050.00317.97
8.2.70.0040.00417.50
8.2.60.0040.00417.92
8.2.50.0090.00018.10
8.2.40.0040.00420.59
8.2.30.0050.00319.27
8.2.20.0040.00418.02
8.2.10.0050.00217.99
8.2.00.0040.00418.04
8.1.280.0180.00425.92
8.1.270.0090.00622.25
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00923.97
8.1.230.0110.00022.08
8.1.220.0060.00317.77
8.1.210.0050.00318.77
8.1.200.0030.00617.25
8.1.190.0030.00617.35
8.1.180.0040.00418.10
8.1.170.0030.00618.78
8.1.160.0040.00418.89
8.1.150.0070.00018.95
8.1.140.0080.00019.55
8.1.130.0000.00718.99
8.1.120.0040.00417.54
8.1.110.0040.00417.48
8.1.100.0000.00717.55
8.1.90.0040.00417.54
8.1.80.0000.00817.45
8.1.70.0030.00317.40
8.1.60.0050.00317.64
8.1.50.0050.00317.55
8.1.40.0000.01017.55
8.1.30.0000.00817.74
8.1.20.0020.00517.63
8.1.10.0030.00517.49
8.1.00.0080.00017.48
8.0.300.0060.00318.77
8.0.290.0040.00416.75
8.0.280.0050.00318.38
8.0.270.0040.00417.23
8.0.260.0000.00716.88
8.0.250.0000.00717.00
8.0.240.0000.00916.98
8.0.230.0000.00717.00
8.0.220.0000.00716.96
8.0.210.0030.00316.94
8.0.200.0030.00316.85
8.0.190.0070.00317.01
8.0.180.0080.00017.00
8.0.170.0040.00417.02
8.0.160.0000.00716.91
8.0.150.0000.00716.89
8.0.140.0050.00316.79
8.0.130.0000.00513.38
8.0.120.0050.00316.89
8.0.110.0040.00416.82
8.0.100.0000.00817.05
8.0.90.0040.00416.81
8.0.80.0220.00016.87
8.0.70.0040.00416.89
8.0.60.0050.00217.06
8.0.50.0040.00416.78
8.0.30.0100.00917.08
8.0.20.0140.00617.40
8.0.10.0040.00417.06
8.0.00.0090.01516.70
7.4.330.0060.00015.55
7.4.320.0030.00316.56
7.4.300.0070.00016.55
7.4.290.0090.00016.64
7.4.280.0000.00816.66
7.4.270.0000.00716.55
7.4.260.0000.00716.56
7.4.250.0040.00416.61
7.4.240.0030.00616.68
7.4.230.0000.00816.56
7.4.220.0120.00616.46
7.4.210.0080.00816.49
7.4.200.0030.00316.56
7.4.160.0030.01316.66
7.4.150.0150.00317.40
7.4.140.0130.00617.86
7.4.130.0080.01116.52
7.4.120.0120.00716.48
7.4.110.0120.00416.40
7.4.100.0090.00916.40
7.4.90.0070.01016.50
7.4.80.0100.00719.39
7.4.70.0060.00916.41
7.4.60.0030.01316.43
7.4.50.0120.00316.57
7.4.40.0090.00916.45
7.4.30.0080.01116.44
7.4.10.0030.01614.74
7.4.00.0000.01614.99
7.3.330.0040.00213.35
7.3.320.0000.00613.20
7.3.310.0070.00016.46
7.3.300.0070.00016.42
7.3.290.0000.00716.29
7.3.280.0090.00816.41
7.3.270.0090.00917.40
7.3.260.0060.01416.47
7.3.250.0090.00916.44
7.3.240.0110.01116.44
7.3.230.0140.00416.61
7.3.210.0070.01016.28
7.3.200.0060.01416.27
7.3.190.0120.01216.55
7.3.180.0070.01016.41
7.3.170.0000.01816.55
7.3.160.0120.00316.66
7.3.130.0000.01614.13
7.3.120.0030.01414.75
7.3.110.0040.00815.13
7.3.100.0070.01414.36
7.3.90.0130.00314.80
7.3.80.0060.00614.73
7.3.70.0070.00714.61
7.3.60.0060.00314.76
7.3.50.0030.00714.77
7.3.40.0040.00814.82
7.3.30.0040.01114.64
7.3.20.0040.00716.37
7.3.10.0000.01216.53
7.3.00.0110.00616.40
7.2.330.0180.00316.73
7.2.320.0130.01016.85
7.2.310.0120.00416.92
7.2.300.0120.01216.85
7.2.290.0130.00516.57
7.2.260.0140.00415.04
7.2.250.0080.01214.71
7.2.240.0030.01315.02
7.2.230.0070.01015.15
7.2.220.0120.00315.20
7.2.210.0030.01314.71
7.2.200.0060.01215.16
7.2.190.0030.01015.16
7.2.180.0080.00814.71
7.2.170.0100.00314.73
7.2.160.0000.01314.79
7.2.150.0080.00816.67
7.2.140.0030.00716.82
7.2.130.0040.01516.80
7.2.120.0040.01216.78
7.2.110.0030.01016.84
7.2.100.0030.01016.80
7.2.90.0000.01616.84
7.2.80.0060.01217.03
7.2.70.0080.01116.87
7.2.60.0500.01115.76
7.2.50.0090.00616.65
7.2.40.0060.01017.00
7.2.30.0040.01117.00
7.2.20.0060.00616.87
7.2.10.0070.00716.80
7.2.00.0050.01018.18
7.1.330.0090.00615.48
7.1.320.0110.00815.93
7.1.310.0100.00315.70
7.1.300.0000.01615.89
7.1.290.0060.00615.68
7.1.280.0040.01115.61
7.1.270.0060.00915.69
7.1.260.0040.00715.63
7.1.250.0100.00615.87
7.1.240.0080.00815.73
7.1.230.0060.00315.66
7.1.220.0030.00715.82
7.1.210.0040.01215.73
7.1.200.0090.00615.59
7.1.190.0060.00615.93
7.1.180.0050.00515.98
7.1.170.0060.00915.91
7.1.160.0110.00715.89
7.1.150.0000.01315.72
7.1.140.0110.00415.70
7.1.130.0040.01115.67
7.1.120.0100.00315.71
7.1.110.0070.00715.90
7.1.100.0030.00916.97
7.1.90.0110.00715.54
7.1.80.0030.01215.73
7.1.70.0130.01215.62
7.1.60.0250.01324.50
7.1.50.0200.00724.48
7.1.40.0130.01324.30
7.1.30.0240.01524.30
7.1.20.0240.01124.28
7.1.10.0160.00415.08
7.1.00.0140.00515.28
7.0.330.0050.00315.32
7.0.320.0000.01415.48
7.0.310.0060.00615.28
7.0.300.0040.01215.27
7.0.290.0040.00715.07
7.0.280.0000.01615.49
7.0.270.0000.01015.10
7.0.260.0030.00715.43
7.0.250.0130.00315.27
7.0.240.0090.00915.46
7.0.230.0120.00615.57
7.0.220.0080.00715.27
7.0.210.0030.00615.21
7.0.200.0170.00715.09
7.0.190.0090.01015.21
7.0.180.0130.00815.02
7.0.170.0110.01314.98
7.0.160.0110.01314.82
7.0.150.0130.00914.82
7.0.140.0150.00714.71
7.0.130.0140.00914.94
7.0.120.0100.00915.15
7.0.110.0140.01114.95
7.0.100.0160.00314.80
7.0.90.0140.00514.93
7.0.80.0100.01214.97
7.0.70.0160.00914.79
7.0.60.0150.01314.89
7.0.50.0120.01114.95
7.0.40.0260.00913.94
7.0.30.0180.00813.89
7.0.20.0110.01114.12
7.0.10.0090.00814.25
7.0.00.0090.01114.10
5.6.400.0100.00314.02
5.6.390.0030.01014.16
5.6.380.0030.00914.38
5.6.370.0040.01214.45
5.6.360.0030.01314.35
5.6.350.0040.01114.40
5.6.340.0060.00314.36
5.6.330.0030.00614.34
5.6.320.0000.01414.20
5.6.310.0030.01013.96
5.6.300.0130.00314.41
5.6.290.0040.00713.84
5.6.280.0130.00314.43
5.6.270.0070.01014.23
5.6.260.0140.00314.22
5.6.250.0040.00814.30
5.6.240.0060.00914.18
5.6.230.0060.00614.62
5.6.220.0080.00414.36
5.6.210.0070.00713.78
5.6.200.0140.00313.89
5.6.190.0000.01414.18
5.6.180.0030.01214.29
5.6.170.0070.00314.00
5.6.160.0100.00314.04
5.6.150.0070.00314.36
5.6.140.0000.00914.25
5.6.130.0040.01214.20
5.6.120.0030.01014.24
5.6.110.0040.01114.40
5.6.100.0030.00614.24
5.6.90.0060.00314.04
5.6.80.0040.00413.90
5.6.70.0110.00714.34
5.6.60.0110.00713.90
5.6.50.0040.01113.79
5.6.40.0000.01414.25
5.6.30.0090.00914.06
5.6.20.0000.01114.36
5.6.10.0100.00714.32
5.6.00.0040.00714.36

preferences:
83.26 ms | 401 KiB | 5 Q