3v4l.org

run code in 300+ PHP versions simultaneously
<?php define("EOL", "\n"); $max = 40; $start = ord("a"); $limit = ord("y"); $arr = array(); $arr[0] = chr($start); while($max--){ for($i = 0; $i <= (count($arr) - 1); $i++){ if(ord($arr[$i]) > $limit){ $arr[$i] = chr($start); if(isset($arr[$i + 1])){ $arr[$i+1] = chr(ord($arr[$i+1]) + 1); } else { $arr[$i+1] = chr($start); } } } var_dump(array_reverse($arr)); echo "[", implode("][", array_reverse($arr)), "]", EOL; $arr[0]++; }

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)
8.3.60.0000.01916.50
8.3.50.0090.01421.16
8.3.40.0120.00318.66
8.3.30.0060.00918.85
8.3.20.0000.00820.29
8.3.10.0120.00321.96
8.3.00.0040.00423.66
8.2.180.0070.01116.63
8.2.170.0140.01022.96
8.2.160.0130.00920.15
8.2.150.0080.00024.18
8.2.140.0030.00624.66
8.2.130.0080.00019.82
8.2.120.0140.00026.35
8.2.110.0000.00920.46
8.2.100.0040.00717.91
8.2.90.0040.00419.13
8.2.80.0040.00418.04
8.2.70.0000.00917.63
8.2.60.0040.00418.05
8.2.50.0060.00318.07
8.2.40.0000.00822.27
8.2.30.0050.00319.42
8.2.20.0080.00017.82
8.2.10.0040.00418.20
8.2.00.0000.00817.98
8.1.280.0060.00925.92
8.1.270.0090.00920.38
8.1.260.0050.00528.09
8.1.250.0040.00428.09
8.1.240.0070.00323.92
8.1.230.0080.00420.85
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00717.35
8.1.190.0060.00317.35
8.1.180.0080.00018.10
8.1.170.0030.00618.58
8.1.160.0040.00420.65
8.1.150.0060.00318.89
8.1.140.0030.00619.48
8.1.130.0000.00717.77
8.1.120.0000.00717.36
8.1.110.0000.00817.38
8.1.100.0040.00417.38
8.1.90.0090.00017.36
8.1.80.0040.00417.46
8.1.70.0040.00417.38
8.1.60.0080.00017.60
8.1.50.0040.00417.59
8.1.40.0030.00617.52
8.1.30.0050.00317.50
8.1.20.0040.00417.67
8.1.10.0000.00817.57
8.1.00.0000.00817.38
8.0.300.0000.00818.77
8.0.290.0030.00516.63
8.0.280.0040.00418.33
8.0.270.0030.00517.18
8.0.260.0000.00617.29
8.0.250.0040.00416.98
8.0.240.0030.00316.86
8.0.230.0040.00416.86
8.0.220.0070.00016.87
8.0.210.0050.00316.73
8.0.200.0070.00017.02
8.0.190.0080.00016.84
8.0.180.0000.00816.95
8.0.170.0030.00616.89
8.0.160.0000.00816.79
8.0.150.0040.00416.84
8.0.140.0000.00716.88
8.0.130.0000.00613.29
8.0.120.0040.00416.73
8.0.110.0000.00816.95
8.0.100.0080.00016.94
8.0.90.0040.00416.70
8.0.80.0120.01216.88
8.0.70.0000.00716.85
8.0.60.0030.00516.80
8.0.50.0000.00816.77
8.0.30.0130.01017.23
8.0.20.0160.00917.40
8.0.10.0040.00417.06
8.0.00.0150.00916.73
7.4.330.0000.00516.83
7.4.320.0000.00616.55
7.4.300.0080.00016.62
7.4.290.0030.00316.52
7.4.280.0060.00316.60
7.4.270.0000.00716.48
7.4.260.0040.00416.55
7.4.250.0040.00416.51
7.4.240.0020.00516.45
7.4.230.0050.00316.64
7.4.220.0130.00616.63
7.4.210.0100.00716.45
7.4.200.0000.00716.51
7.4.160.0130.00816.62
7.4.150.0110.01117.40
7.4.140.0170.00617.86
7.4.130.0120.01516.54
7.4.120.0110.00916.45
7.4.110.0140.00916.64
7.4.100.0080.01216.57
7.4.90.0070.01116.44
7.4.80.0140.00719.39
7.4.70.0170.00016.52
7.4.60.0080.01116.49
7.4.50.0030.01016.47
7.4.40.0100.01016.58
7.4.30.0140.01416.60
7.4.00.0090.01114.98
7.3.330.0000.00513.29
7.3.320.0030.00313.25
7.3.310.0000.00716.34
7.3.300.0070.00016.34
7.3.290.0120.00616.38
7.3.280.0100.01116.34
7.3.270.0070.01917.40
7.3.260.0110.01016.60
7.3.250.0080.01216.45
7.3.240.0120.01216.46
7.3.230.0120.00716.62
7.3.210.0080.01116.29
7.3.200.0120.01219.39
7.3.190.0170.00316.55
7.3.180.0030.01616.52
7.3.170.0090.00916.73
7.3.160.0190.00616.43
7.3.120.0070.00714.96
7.3.110.0130.00714.75
7.3.100.0120.00315.00
7.3.90.0030.00714.94
7.3.80.0030.01314.82
7.3.70.0070.01014.90
7.3.60.0110.00414.92
7.3.50.0000.01714.91
7.3.40.0200.00014.68
7.3.30.0030.00614.71
7.3.20.0100.00316.51
7.3.10.0090.00616.71
7.3.00.0030.01016.59
7.2.330.0110.01116.77
7.2.320.0100.01016.91
7.2.310.0080.01116.55
7.2.300.0150.01116.82
7.2.290.0170.00416.48
7.2.250.0150.00014.61
7.2.240.0140.00715.23
7.2.230.0120.00915.09
7.2.220.0070.00714.73
7.2.210.0070.01014.75
7.2.200.0030.00715.11
7.2.190.0070.00715.11
7.2.180.0070.01014.97
7.2.170.0120.00015.05
7.2.60.0110.00316.91
7.2.00.0290.01019.28
7.1.330.0080.00815.56
7.1.320.0090.00315.78
7.1.310.0100.00615.84
7.1.300.0000.01415.97
7.1.290.0000.01515.66
7.1.280.0000.01615.58
7.1.270.0060.00615.73
7.1.260.0060.00615.80
7.1.200.0030.01015.69
7.1.100.0060.01017.88
7.1.70.0040.00816.92
7.1.60.0110.01519.27
7.1.50.0070.01717.15
7.1.00.0000.08022.30
7.0.200.0040.00416.48
7.0.100.0300.04319.92
7.0.90.0030.05020.05
7.0.80.0430.03319.91
7.0.70.0100.07719.96
7.0.60.0170.03719.93
7.0.50.0130.05020.32
7.0.40.0130.07720.13
7.0.30.0030.08720.08
7.0.20.0100.05720.12
7.0.10.0130.04720.09
7.0.00.0100.08320.10
5.6.250.0170.07020.72
5.6.240.0000.08020.73
5.6.230.0000.05720.53
5.6.220.0070.04720.68
5.6.210.0000.06020.77
5.6.200.0170.07721.05
5.6.190.0070.06721.04
5.6.180.0100.08021.01
5.6.170.0130.03721.04
5.6.160.0170.05321.04
5.6.150.0100.05721.04
5.6.140.0070.06020.89
5.6.130.0230.07721.10
5.6.120.0100.04321.02
5.6.110.0130.05721.09
5.6.100.0070.07021.04
5.6.90.0070.07321.00
5.6.80.0100.08020.49
5.6.70.0100.04320.39
5.6.60.0100.07020.45
5.6.50.0030.07020.43
5.6.40.0100.07720.43
5.6.30.0100.07720.41
5.6.20.0170.06020.44
5.6.10.0070.08320.49
5.6.00.0130.05020.36
5.5.380.0070.05020.57
5.5.370.0070.04720.43
5.5.360.0170.04720.36
5.5.350.0200.07720.47
5.5.340.0030.05320.76
5.5.330.0070.08320.93
5.5.320.0100.08020.88
5.5.310.0170.07720.76
5.5.300.0100.07020.89
5.5.290.0170.07720.83
5.5.280.0130.04320.93
5.5.270.0170.07320.87
5.5.260.0030.05720.91
5.5.250.0030.07720.74
5.5.240.0100.07320.29
5.5.230.0000.05020.30
5.5.220.0100.06720.17
5.5.210.0070.05320.27
5.5.200.0130.06720.00
5.5.190.0100.05720.16
5.5.180.0070.06320.23
5.5.160.0170.06720.14
5.5.150.0270.04320.23
5.5.140.0200.04720.12
5.5.130.0200.07020.23
5.5.120.0170.06719.99
5.5.110.0130.07019.98
5.5.100.0200.07019.98
5.5.90.0100.06720.09
5.5.80.0070.07719.98
5.5.70.0070.05020.00
5.5.60.0030.08320.00
5.5.50.0030.07719.96
5.5.40.0130.06720.06
5.5.30.0070.07320.16
5.5.20.0070.06720.13
5.5.10.0000.07720.04
5.5.00.0070.06720.08

preferences:
53.77 ms | 401 KiB | 5 Q