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 => $v) { var_dump($k .'='. $i); if ($i !== $k && $v !== null && $lower === mb_strtolower($v, 'utf-8')) { var_dump('rm'); unset($arr[$i]); } } }); 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)
8.3.60.0080.00816.75
8.3.50.0070.01016.64
8.3.40.0110.00418.70
8.3.30.0030.01218.84
8.3.20.0080.00020.09
8.3.10.0040.00421.68
8.3.00.0060.00319.69
8.2.180.0060.00916.50
8.2.170.0070.00722.96
8.2.160.0030.01418.85
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00419.30
8.2.120.0000.00826.35
8.2.110.0130.00320.35
8.2.100.0040.00717.91
8.2.90.0040.00419.29
8.2.80.0030.00718.03
8.2.70.0040.00817.63
8.2.60.0000.00817.93
8.2.50.0030.00518.16
8.2.40.0000.00820.41
8.2.30.0040.00419.22
8.2.20.0040.00418.00
8.2.10.0000.00718.00
8.2.00.0050.00218.10
8.1.280.0140.00725.92
8.1.270.0080.00022.14
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0060.00323.86
8.1.230.0000.01122.20
8.1.220.0030.00617.78
8.1.210.0060.00318.77
8.1.200.0060.00317.36
8.1.190.0060.00317.23
8.1.180.0030.00518.10
8.1.170.0050.00318.61
8.1.160.0070.00019.07
8.1.150.0020.00518.91
8.1.140.0000.00819.57
8.1.130.0040.00418.91
8.1.120.0050.00217.55
8.1.110.0040.00417.47
8.1.100.0040.00417.43
8.1.90.0030.00617.43
8.1.80.0070.00017.54
8.1.70.0000.00717.50
8.1.60.0000.00817.66
8.1.50.0030.00617.58
8.1.40.0000.01017.41
8.1.30.0030.00517.55
8.1.20.0080.00017.55
8.1.10.0040.00417.48
8.1.00.0040.00417.51
8.0.300.0000.00718.77
8.0.290.0000.00816.75
8.0.280.0030.00318.43
8.0.270.0030.00317.35
8.0.260.0030.00316.83
8.0.250.0030.00316.91
8.0.240.0040.00416.89
8.0.230.0000.00716.92
8.0.220.0070.00016.96
8.0.210.0030.00316.93
8.0.200.0030.00517.01
8.0.190.0100.00016.91
8.0.180.0000.00716.91
8.0.170.0050.00217.06
8.0.160.0040.00417.07
8.0.150.0000.00716.80
8.0.140.0040.00416.95
8.0.130.0070.00213.39
8.0.120.0000.00816.81
8.0.110.0040.00416.86
8.0.100.0070.00016.91
8.0.90.0040.00416.92
8.0.80.0000.02116.83
8.0.70.0030.00516.84
8.0.60.0000.00816.89
8.0.50.0050.00316.93
8.0.30.0070.01217.10
8.0.20.0160.00817.40
8.0.10.0030.00516.86
8.0.00.0120.00616.70
7.4.330.0030.00315.55
7.4.320.0060.00016.64
7.4.300.0000.00716.58
7.4.290.0030.00316.57
7.4.280.0070.00016.67
7.4.270.0030.00316.64
7.4.260.0030.00616.64
7.4.250.0070.00016.55
7.4.240.0040.00416.59
7.4.230.0030.00316.59
7.4.220.0140.00416.70
7.4.210.0080.01116.53
7.4.200.0030.00516.30
7.4.160.0090.00716.43
7.4.150.0110.00817.40
7.4.140.0090.01017.86
7.4.130.0140.00616.43
7.4.120.0170.00816.58
7.4.110.0110.00816.48
7.4.100.0120.00616.56
7.4.90.0150.00916.39
7.4.80.0130.00319.39
7.4.70.0070.01116.63
7.4.60.0000.02016.42
7.4.50.0030.01016.44
7.4.40.0070.01016.51
7.4.30.0100.01016.59
7.4.00.0030.01015.15
7.3.330.0000.00713.44
7.3.320.0000.00513.45
7.3.310.0070.00016.30
7.3.300.0040.00416.29
7.3.290.0060.00316.40
7.3.280.0090.00816.40
7.3.270.0210.00917.40
7.3.260.0150.00316.29
7.3.250.0080.01016.52
7.3.240.0070.01116.47
7.3.230.0090.00916.48
7.3.210.0060.01216.59
7.3.200.0030.02116.67
7.3.190.0080.00816.47
7.3.180.0100.00716.38
7.3.170.0060.01016.39
7.3.160.0080.00816.64
7.3.120.0080.00814.66
7.3.110.0030.01214.71
7.3.100.0000.01414.82
7.3.90.0030.01215.13
7.3.80.0070.00314.85
7.3.70.0150.00014.80
7.3.60.0060.00915.02
7.3.50.0000.01714.79
7.3.40.0100.00714.75
7.3.30.0030.01014.89
7.3.20.0140.00316.63
7.3.10.0110.00416.54
7.3.00.0040.01116.81
7.2.330.0160.00316.83
7.2.320.0040.01616.73
7.2.310.0090.00816.61
7.2.300.0080.01116.64
7.2.290.0070.01016.91
7.2.240.0060.00915.06
7.2.230.0040.01215.29
7.2.220.0060.00615.13
7.2.210.0030.01014.98
7.2.200.0030.01315.04
7.2.190.0000.01215.09
7.2.180.0030.01015.07
7.2.170.0090.00315.19
7.2.160.0060.00615.23
7.2.150.0060.00616.89
7.2.140.0040.01417.09
7.2.130.0110.00716.80
7.2.120.0040.01517.04
7.2.110.0090.00617.09
7.2.100.0030.00716.75
7.2.90.0110.00717.00
7.2.80.0070.01116.81
7.2.70.0030.00916.62
7.2.60.0540.00716.11
7.2.50.0090.00616.96
7.2.40.0090.00316.89
7.2.30.0070.01117.05
7.2.20.0150.00416.79
7.2.10.0070.00716.86
7.2.00.0060.01218.32
7.1.330.0060.00915.95
7.1.320.0000.01415.95
7.1.310.0000.01615.83
7.1.300.0100.00615.67
7.1.290.0090.00615.82
7.1.280.0090.00615.66
7.1.270.0000.01415.66
7.1.260.0060.00615.93
7.1.250.0000.01315.77
7.1.200.0040.01115.91
7.1.100.0060.00918.20
7.1.70.0130.01315.39
7.1.60.0300.01333.37
7.1.50.0350.01333.22
7.1.40.0350.00632.74
7.1.30.0250.01832.65
7.1.20.0340.01032.78
7.1.10.0170.01314.62
7.1.00.0130.01614.83
7.0.200.0170.01014.98
7.0.190.0250.01114.81
7.0.180.0160.01014.43
7.0.170.0220.01214.54
7.0.160.0160.01314.47
7.0.150.0180.01214.18
7.0.140.0220.00914.39
7.0.130.0140.01414.59
7.0.120.0240.00414.79
7.0.110.0210.02114.66
7.0.100.0260.01614.35
7.0.90.0210.00914.69
7.0.80.0280.01114.68
7.0.70.0330.01214.80
7.0.60.0220.01214.33
7.0.50.0300.00714.66
7.0.40.0030.01314.77
7.0.30.0280.00914.78
7.0.20.0330.00614.63
7.0.10.0830.00714.57
7.0.00.0250.01014.73

preferences:
58.04 ms | 400 KiB | 5 Q