3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ 'foo', 'foo', 'bar', 'baz', 'baz' ]; $arr2 = []; foreach ($arr as $v) { $lower = mb_strtolower($v, 'utf-8'); foreach ($arr2 as $v2) { $lower2 = mb_strtolower($v2, 'utf-8'); if ($lower === $lower2) { continue 2; } } $arr2[] = $v; } var_dump($arr2);

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)
8.3.60.0180.00416.37
8.3.50.0090.00616.27
8.3.40.0130.00318.79
8.3.30.0150.00018.66
8.3.20.0040.00420.21
8.3.10.0020.00521.90
8.3.00.0040.00419.69
8.2.180.0040.01116.50
8.2.170.0090.01322.96
8.2.160.0000.01419.08
8.2.150.0030.00624.18
8.2.140.0030.00624.66
8.2.130.0080.00019.25
8.2.120.0040.00426.35
8.2.110.0030.00720.54
8.2.100.0070.00417.91
8.2.90.0050.00319.36
8.2.80.0050.00317.97
8.2.70.0080.00417.63
8.2.60.0080.00018.05
8.2.50.0000.00818.16
8.2.40.0050.00220.61
8.2.30.0050.00219.36
8.2.20.0050.00218.12
8.2.10.0030.00518.12
8.2.00.0070.00018.22
8.1.280.0070.01625.92
8.1.270.0070.00022.14
8.1.260.0040.00426.35
8.1.250.0030.00328.09
8.1.240.0030.00622.69
8.1.230.0080.00318.97
8.1.220.0000.00817.78
8.1.210.0050.00318.77
8.1.200.0040.00417.35
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0030.00618.65
8.1.160.0040.00418.93
8.1.150.0040.00418.95
8.1.140.0050.00219.65
8.1.130.0000.00718.96
8.1.120.0040.00417.49
8.1.110.0040.00417.38
8.1.100.0000.00817.56
8.1.90.0030.00517.56
8.1.80.0000.00717.46
8.1.70.0040.00417.52
8.1.60.0060.00317.65
8.1.50.0080.00017.59
8.1.40.0000.00817.56
8.1.30.0000.00717.70
8.1.20.0000.00717.71
8.1.10.0000.00817.59
8.1.00.0000.00717.34
8.0.300.0040.00418.77
8.0.290.0070.00016.88
8.0.280.0000.00718.55
8.0.270.0070.00017.37
8.0.260.0070.00016.93
8.0.250.0050.00316.96
8.0.240.0000.01016.93
8.0.230.0000.00717.08
8.0.220.0050.00216.98
8.0.210.0030.00316.97
8.0.200.0040.00416.95
8.0.190.0090.00316.96
8.0.180.0040.00416.95
8.0.170.0030.00316.89
8.0.160.0070.00016.96
8.0.150.0030.00416.93
8.0.140.0030.00316.91
8.0.130.0070.00213.31
8.0.120.0000.00716.94
8.0.110.0000.00717.02
8.0.100.0040.00416.95
8.0.90.0050.00316.79
8.0.80.0180.00616.89
8.0.70.0000.00716.85
8.0.60.0080.00016.84
8.0.50.0040.00416.85
8.0.30.0120.00617.14
8.0.20.0130.00717.41
8.0.10.0070.00016.89
8.0.00.0100.00916.97
7.4.330.0000.00615.55
7.4.320.0030.00316.58
7.4.300.0000.00616.64
7.4.290.0000.00716.68
7.4.280.0040.00416.70
7.4.270.0000.00716.61
7.4.260.0080.00016.63
7.4.250.0030.00316.47
7.4.240.0040.00416.68
7.4.230.0030.00316.75
7.4.220.0110.00716.55
7.4.210.0040.01116.58
7.4.200.0000.00716.73
7.4.160.0090.00916.48
7.4.150.0180.00317.40
7.4.140.0120.00717.86
7.4.130.0070.01216.62
7.4.120.0100.00816.54
7.4.110.0160.00016.48
7.4.100.0110.01416.64
7.4.90.0130.00416.57
7.4.80.0080.00819.39
7.4.70.0140.00816.57
7.4.60.0080.00816.59
7.4.50.0030.01016.36
7.4.40.0100.00716.21
7.4.30.0090.00916.59
7.4.00.0080.00815.10
7.3.330.0030.00313.22
7.3.320.0000.00513.11
7.3.310.0000.00716.51
7.3.300.0070.00016.44
7.3.290.0000.00616.29
7.3.280.0080.00816.38
7.3.270.0070.01017.40
7.3.260.0050.01416.57
7.3.250.0030.01516.35
7.3.240.0100.00616.30
7.3.230.0110.00716.29
7.3.210.0120.00416.25
7.3.200.0130.01016.63
7.3.190.0130.00716.30
7.3.180.0030.01316.35
7.3.170.0060.00916.43
7.3.160.0070.01016.40
7.3.120.0110.00714.93
7.3.110.0030.01414.69
7.3.100.0040.00914.83
7.3.90.0060.00914.72
7.3.80.0110.00414.61
7.3.70.0030.01114.69
7.3.60.0060.00914.91
7.3.50.0050.00714.79
7.3.40.0040.00914.84
7.3.30.0060.00814.88
7.3.20.0090.00416.68
7.3.10.0050.00916.68
7.3.00.0060.01016.71
7.2.330.0110.01516.75
7.2.320.0110.01116.43
7.2.310.0050.01116.49
7.2.300.0130.01016.40
7.2.290.0080.00816.70
7.2.250.0040.01515.01
7.2.240.0070.01115.07
7.2.230.0120.00515.18
7.2.220.0040.01115.13
7.2.210.0050.01215.05
7.2.200.0030.01014.88
7.2.190.0020.01315.11
7.2.180.0050.00715.13
7.2.170.0040.00615.03
7.2.130.0040.01116.98
7.2.120.0060.00616.83
7.2.110.0000.01416.59
7.2.100.0040.00816.79
7.2.90.0040.01116.87
7.2.80.0110.00317.05
7.2.70.0090.00316.90
7.2.60.0540.00616.07
7.2.50.0110.00616.80
7.2.40.0040.01216.81
7.2.30.0030.01317.06
7.2.20.0090.00316.84
7.2.10.0060.00316.84
7.2.00.0050.00718.17
7.1.330.0020.01216.00
7.1.320.0070.00915.64
7.1.310.0000.01515.81
7.1.300.0070.00715.81
7.1.290.0080.00315.74
7.1.280.0050.00715.88
7.1.270.0080.00615.70
7.1.260.0080.00916.01
7.1.250.0060.00315.55
7.1.200.0060.00615.93
7.1.100.0030.01418.05
7.1.70.0140.01315.43
7.1.60.0290.01333.44
7.1.50.0280.01932.79
7.1.40.0670.00332.68
7.1.30.0280.01432.93
7.1.20.0460.01432.78
7.1.10.0180.00914.90
7.1.00.0130.01314.93
7.0.200.1070.01315.12
7.0.190.0190.00614.88
7.0.180.0170.01114.52
7.0.170.0180.00714.43
7.0.160.0260.00714.38
7.0.150.0130.01314.52
7.0.140.0170.00714.44
7.0.130.0220.01414.64
7.0.120.0210.01414.79
7.0.110.0260.00914.45
7.0.100.0280.01314.43
7.0.90.0110.01414.38
7.0.80.0240.01214.64
7.0.70.0230.00614.57
7.0.60.0260.01214.37
7.0.50.0290.00314.63
7.0.40.0200.01314.60
7.0.30.0160.00914.94
7.0.20.0210.00714.77
7.0.10.0260.00714.95
7.0.00.0200.00914.66

preferences:
40.73 ms | 401 KiB | 5 Q