3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "abbacbzcz"; $array = str_split($string); $array = array_count_values($array); $array = array_filter($array, function($val) { return $val == 1;}); $first_non_repeated_letter = key(array_shift($array)); var_export($first_non_repeated_letter);

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)
8.5.30.0110.00621.29
8.5.20.0090.00819.32
8.5.10.0110.00620.17
8.5.00.0160.00520.21
8.4.180.0150.01120.36
8.4.170.0120.01123.88
8.4.160.0120.00920.37
8.4.150.0070.00516.92
8.4.140.0140.00717.87
8.4.130.0140.00617.51
8.4.120.0130.00720.41
8.4.110.0120.00918.92
8.4.100.0100.00918.93
8.4.90.0140.00620.60
8.4.80.0100.01019.00
8.4.70.0040.00418.00
8.4.60.0130.00618.82
8.4.50.0130.01019.68
8.4.40.0120.00819.62
8.4.30.0090.00920.69
8.4.20.0130.00717.97
8.4.10.0040.00424.09
8.3.300.0150.00520.77
8.3.290.0120.01120.75
8.3.280.0120.00918.48
8.3.270.0110.00916.48
8.3.260.0130.00716.53
8.3.250.0110.00718.84
8.3.240.0050.00416.80
8.3.230.0060.00416.45
8.3.220.0090.00918.78
8.3.210.0070.00816.85
8.3.200.0060.00316.73
8.3.190.0120.00717.41
8.3.180.0100.00116.62
8.3.170.0110.00717.15
8.3.160.0150.00318.46
8.3.150.0090.00920.67
8.3.140.0060.00316.79
8.3.130.0030.00616.92
8.3.120.0040.00420.81
8.3.110.0060.00316.55
8.3.100.0000.00916.54
8.3.90.0040.00426.77
8.3.80.0040.00416.50
8.3.70.0070.01416.58
8.3.60.0030.01716.88
8.3.50.0040.01120.50
8.3.40.0140.00722.10
8.3.30.0130.00718.74
8.3.20.0030.00524.18
8.3.10.0050.00324.66
8.3.00.0030.00626.16
8.2.300.0120.00722.30
8.2.290.0050.00320.35
8.2.280.0060.00218.50
8.2.270.0030.00517.54
8.2.260.0110.00420.21
8.2.250.0040.00816.75
8.2.240.0090.00017.27
8.2.230.0000.00820.94
8.2.220.0090.00024.06
8.2.210.0040.00426.77
8.2.200.0090.00016.75
8.2.190.0150.00616.75
8.2.180.0070.00725.92
8.2.170.0110.00419.07
8.2.160.0110.00322.96
8.2.150.0070.00025.66
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0050.00226.16
8.2.110.0100.00319.20
8.2.100.0000.01117.84
8.2.90.0000.00818.03
8.2.80.0000.00819.34
8.2.70.0030.00617.63
8.2.60.0040.00419.75
8.2.50.0090.00018.05
8.2.40.0040.00418.03
8.2.30.0000.00718.01
8.2.20.0050.00319.27
8.2.10.0040.00418.13
8.2.00.0040.00419.22
8.1.340.0110.00921.73
8.1.330.0120.00816.44
8.1.320.0090.00916.32
8.1.310.0070.01118.21
8.1.300.0140.00720.29
8.1.290.0030.00630.84
8.1.280.0090.01225.92
8.1.270.0090.00024.66
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00622.05
8.1.230.0110.00022.75
8.1.220.0000.00817.74
8.1.210.0050.00319.04
8.1.200.0070.00317.23
8.1.190.0090.00017.23
8.1.180.0000.00918.10
8.1.170.0040.00418.71
8.1.160.0000.00718.81
8.1.150.0050.00218.55
8.1.140.0070.00017.44
8.1.130.0030.00620.58
8.1.120.0050.00217.52
8.1.110.0050.00517.46
8.1.100.0040.00617.30
8.1.90.0050.00517.47
8.1.80.0060.00617.36
8.1.70.0120.00417.45
8.1.60.0100.00817.55
8.1.50.0190.00017.54
8.1.40.0150.00317.57
8.1.30.0070.00917.64
8.1.20.0090.00917.55
8.1.10.0180.00017.55
8.1.00.0120.00617.35
8.0.300.0000.00719.64
8.0.290.0000.00816.75
8.0.280.0000.00718.44
8.0.270.0000.00717.23
8.0.260.0000.00618.29
8.0.250.0030.00316.83
8.0.240.0120.00316.89
8.0.230.0150.00016.78
8.0.220.0120.00216.65
8.0.210.0110.00416.88
8.0.200.0070.01016.97
8.0.190.0050.00916.96
8.0.180.0070.00516.92
8.0.170.0120.00316.77
8.0.160.0170.00016.86
8.0.150.0120.00416.74
8.0.140.0050.01016.77
8.0.130.0150.00016.66
8.0.120.0120.00316.75
8.0.110.0080.00816.81
8.0.100.0050.01016.91
8.0.90.0080.00816.82
8.0.80.0110.00416.96
8.0.70.0040.01116.79
8.0.60.0060.00916.91
8.0.50.0120.00416.89
8.0.30.0160.00016.82
8.0.20.0100.00516.88
8.0.10.0130.00316.92
7.4.330.0060.00015.55
7.4.320.0070.01016.49
7.4.300.0030.01016.60
7.4.290.0110.00416.50
7.4.280.0120.00616.64
7.4.270.0130.00316.49
7.4.260.0150.00016.52
7.4.250.0070.00716.54
7.4.240.0110.00316.34
7.4.230.0100.00316.55
7.4.220.0070.00716.64
7.4.210.0090.00416.54
7.4.200.0090.00416.47
7.4.190.0130.00316.57
7.4.180.0080.00316.42
7.4.160.0100.00216.35
7.4.150.0150.00016.58
7.4.140.0110.00416.46
7.4.130.0090.00416.43
7.4.120.0090.00416.52
7.4.110.0140.00016.43
7.4.100.0090.00516.55
7.4.90.0070.00716.38
7.4.80.0120.00316.37
7.4.70.0140.00016.50
7.4.60.0060.00716.52
7.4.50.0080.00516.27
7.4.40.0070.00716.20
7.4.30.0130.00416.43
7.4.20.0100.00516.43
7.4.10.0090.00616.27
7.4.00.0120.00216.46

preferences:
102.25 ms | 1275 KiB | 5 Q