3v4l.org

run code in 300+ PHP versions simultaneously
<?php function utf8($num) { if($num<=0x7F) return chr($num); if($num<=0x7FF) return chr(($num>>6)+192).chr(($num&63)+128); if($num<=0xFFFF) return chr(($num>>12)+224).chr((($num>>6)&63)+128).chr(($num&63)+128); if($num<=0x1FFFFF) return chr(($num>>18)+240).chr((($num>>12)&63)+128).chr((($num>>6)&63)+128).chr(($num&63)+128); return ''; } function uniord($c) { $ord0 = ord($c{0}); if ($ord0>=0 && $ord0<=127) return $ord0; $ord1 = ord($c{1}); if ($ord0>=192 && $ord0<=223) return ($ord0-192)*64 + ($ord1-128); $ord2 = ord($c{2}); if ($ord0>=224 && $ord0<=239) return ($ord0-224)*4096 + ($ord1-128)*64 + ($ord2-128); $ord3 = ord($c{3}); if ($ord0>=240 && $ord0<=247) return ($ord0-240)*262144 + ($ord1-128)*4096 + ($ord2-128)*64 + ($ord3-128); return false; } //echo uniord('á'); 225 //echo utf8(0xE1); á $strTest='holá'; for($i = 0, $n = mb_strlen($strTest); $i < $n; $i++) { $mbchar = mb_substr($strTest, $i, 1); echo 'current char: '.$mbchar.'\n<br/>'; echo 'uniord= '.uniord($mbchar).'\n<br/>'; echo 'prev char= '.utf8(dechex(uniord($mbchar)-1)).'\n<br/>'.'\n<br/>'; }

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)
8.3.60.0110.00416.38
8.3.50.0280.00421.99
8.3.40.0080.00818.54
8.3.30.0070.00719.04
8.3.20.0050.00220.34
8.3.10.0050.00323.64
8.3.00.0040.00419.18
8.2.180.0110.00418.30
8.2.170.0140.00022.96
8.2.160.0100.00720.52
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0140.00426.16
8.2.120.0050.00322.21
8.2.110.0000.01022.29
8.2.100.0080.00417.78
8.2.90.0040.00419.11
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0040.00417.80
8.2.50.0050.00318.07
8.2.40.0040.00419.55
8.2.30.0000.00819.60
8.2.20.0040.00417.47
8.2.10.0000.00817.92
8.2.00.0080.00317.49
8.1.280.0090.00625.92
8.1.270.0050.00523.96
8.1.260.0060.00326.35
8.1.250.0070.00028.09
8.1.240.0070.00323.88
8.1.230.0070.00419.01
8.1.220.0080.00017.74
8.1.210.0030.00618.77
8.1.200.0030.00617.22
8.1.190.0000.00817.10
8.1.180.0050.00518.10
8.1.170.0040.00418.54
8.1.160.0000.00721.97
8.1.150.0000.00718.54
8.1.140.0050.00217.25
8.1.130.0000.00717.74
8.1.120.0070.00017.31
8.1.110.0050.00317.36
8.1.100.0070.00317.39
8.1.90.0040.00417.36
8.1.80.0040.00417.37
8.1.70.0030.00317.30
8.1.60.0030.00617.40
8.1.50.0050.00517.34
8.1.40.0000.00717.39
8.1.30.0090.00017.49
8.1.20.0040.00417.41
8.1.10.0020.00517.40
8.1.00.0040.00417.24
8.0.300.0040.00420.76
8.0.290.0040.00417.15
8.0.280.0000.00718.26
8.0.270.0030.00317.06
8.0.260.0030.00317.21
8.0.250.0000.00716.94
8.0.240.0030.00316.80
8.0.230.0000.00816.88
8.0.220.0030.00316.86
8.0.210.0030.00616.87
8.0.200.0000.00716.91
8.0.190.0000.00716.83
8.0.180.0000.00816.91
8.0.170.0050.00316.88
8.0.160.0000.00716.80
8.0.150.0050.00216.70
8.0.140.0000.00716.70
8.0.130.0000.00513.25
8.0.120.0030.00516.80
8.0.110.0040.00316.89
8.0.100.0040.00416.88
8.0.90.0000.00716.84
8.0.80.0040.01816.92
8.0.70.0070.00016.89
8.0.60.0000.00716.80
8.0.50.0050.00316.80
8.0.30.0150.00416.97
8.0.20.0150.00717.40
8.0.10.0000.00817.02
8.0.00.0140.00416.69
7.4.330.0000.00515.01
7.4.320.0000.00616.67
7.4.300.0060.00016.57
7.4.290.0100.00016.58
7.4.280.0080.00516.60
7.4.270.0050.00316.49
7.4.260.0030.00316.62
7.4.250.0080.00016.54
7.4.240.0020.00516.58
7.4.230.0030.00316.73
7.4.220.0070.01016.45
7.4.210.0060.01116.60
7.4.200.0070.00016.38
7.4.190.0040.00416.72
7.4.160.0120.00416.54
7.4.150.0090.00917.40
7.4.140.0080.01017.86
7.4.130.0110.00616.57
7.4.120.0120.00516.54
7.4.110.0090.01216.55
7.4.100.0160.00316.72
7.4.90.0090.01316.51
7.4.80.0120.00919.39
7.4.70.0090.00916.59
7.4.60.0150.00316.63
7.4.50.0060.00016.46
7.4.40.0080.00522.77
7.4.30.0100.00716.72
7.4.00.0030.01314.94
7.3.330.0050.00013.41
7.3.320.0000.00513.56
7.3.310.0050.00216.51
7.3.300.0070.00016.34
7.3.290.0090.00616.48
7.3.280.0090.00816.37
7.3.270.0150.00417.40
7.3.260.0030.01616.55
7.3.250.0080.01116.56
7.3.240.0130.00716.55
7.3.230.0110.00716.45
7.3.210.0120.00616.57
7.3.200.0080.01419.39
7.3.190.0090.01216.35
7.3.180.0130.00316.41
7.3.170.0110.00516.73
7.3.160.0060.01616.48
7.3.120.0060.00914.70
7.2.330.0120.00616.84
7.2.320.0160.00316.88
7.2.310.0080.00816.62
7.2.300.0140.00316.50
7.2.290.0100.00716.52
7.2.00.0120.00719.16
7.1.100.0260.00917.37
7.1.70.0000.00716.93
7.1.60.0040.00817.02
7.1.50.0230.00517.01
7.1.00.0030.07722.40
7.0.200.0070.00716.81
7.0.140.0000.07722.09
7.0.60.0130.08019.89
7.0.50.0130.08017.89
7.0.40.0030.04320.09
7.0.30.0230.08720.21
7.0.20.0400.07020.11
7.0.10.0030.08020.15
7.0.00.0170.07320.32
5.6.280.0070.07321.05
5.6.210.0070.08720.56
5.6.200.0100.07718.16
5.6.190.0130.08320.56
5.6.180.0170.04720.62
5.6.170.0230.04320.50
5.6.160.0070.08320.47
5.6.150.0100.06318.17
5.6.140.0070.04318.24
5.6.130.0130.06718.18
5.6.120.0100.06721.03
5.6.110.0070.05721.15
5.6.100.0170.07721.00
5.6.90.0100.07721.02
5.6.80.0130.07720.54
5.6.70.4300.03020.39
5.5.350.0000.04320.51
5.5.340.0000.04018.05
5.5.330.0000.09020.29
5.5.320.0170.04320.35
5.5.310.0200.03720.38
5.5.300.0070.08318.04
5.5.290.0070.08317.95
5.5.280.0030.05320.82
5.5.270.0100.03320.86
5.5.260.0070.08720.78
5.5.250.0130.06720.57
5.5.240.0300.06320.28
5.4.450.0700.07019.36
5.4.440.0930.06019.70
5.4.430.0170.06719.47
5.4.420.0670.05319.46
5.4.410.0730.06319.42
5.4.400.0170.05719.28
5.4.390.0430.05719.01
5.4.380.0230.06718.61
5.4.370.0230.05318.79
5.4.360.0300.04718.84
5.4.350.0470.05318.74
5.4.340.0470.04718.78
5.4.320.0050.04612.52
5.4.310.0060.04412.52
5.4.300.0110.04512.52
5.4.290.0100.06212.50
5.4.280.0090.05712.40
5.4.270.0120.05612.40
5.4.260.0130.06112.40
5.4.250.0140.05812.40
5.4.240.0120.05612.40
5.4.230.0060.06312.39
5.4.220.0060.05812.39
5.4.210.0090.05212.39
5.4.200.0080.05612.39
5.4.190.0140.04712.39
5.4.180.0100.05012.39
5.4.170.0090.05212.39
5.4.160.0110.04612.39
5.4.150.0090.04812.39
5.4.140.0090.05012.07
5.4.130.0110.05012.06
5.4.120.0120.04812.02
5.4.110.0090.05012.01
5.4.100.0100.04712.01
5.4.90.0110.05012.01
5.4.80.0070.05412.01
5.4.70.0100.04912.01
5.4.60.0080.05212.01
5.4.50.0080.05112.01
5.4.40.0120.04912.00
5.4.30.0090.05211.99
5.4.20.0120.04911.99
5.4.10.0130.04611.99
5.4.00.0080.05111.48
5.3.290.0070.04512.80
5.3.280.0080.05412.71
5.3.270.0090.04612.72
5.3.260.0120.05312.72
5.3.250.0130.05112.72
5.3.240.0110.05112.72
5.3.230.0100.05712.71
5.3.220.0150.05212.68
5.3.210.0170.05412.68
5.3.200.0090.06212.68
5.3.190.0100.05612.68
5.3.180.0170.06112.67
5.3.170.0130.05212.66
5.3.160.0140.04912.68
5.3.150.0100.05512.67
5.3.140.0230.08612.66
5.3.130.0120.05012.66
5.3.120.0150.05012.66
5.3.110.0080.05312.66
5.3.100.0070.05412.14
5.3.90.0090.04912.12
5.3.80.0130.04612.11
5.3.70.0100.05012.12
5.3.60.0120.04112.10
5.3.50.0090.05012.05
5.3.40.0100.04912.05
5.3.30.0120.04912.00
5.3.20.0150.04411.79
5.3.10.0160.05811.75
5.3.00.0120.05611.74
5.2.170.0080.0489.24
5.2.160.0100.0489.24
5.2.150.0070.0439.23
5.2.140.0060.0439.23
5.2.130.0120.0379.20
5.2.120.0090.0419.20
5.2.110.0070.0439.21
5.2.100.0060.0439.20
5.2.90.0090.0439.20
5.2.80.0070.0459.20
5.2.70.0080.0449.20
5.2.60.0080.0409.15
5.2.50.0050.0429.13
5.2.40.0030.0389.10
5.2.30.0040.0319.07
5.2.20.0060.0299.06
5.2.10.0080.0338.97
5.2.00.0060.0418.84
5.1.60.0090.0308.12
5.1.50.0040.0348.11
5.1.40.0060.0338.09
5.1.30.0080.0348.44
5.1.20.0060.0328.46
5.1.10.0060.0268.19
5.1.00.0030.0298.19
5.0.50.0050.0206.67
5.0.40.0050.0276.54
5.0.30.0070.0406.34
5.0.20.0070.0316.33
5.0.10.0060.0206.31
5.0.00.0050.0316.30
4.4.90.0050.0184.77
4.4.80.0040.0214.76
4.4.70.0090.0204.76
4.4.60.0050.0234.75
4.4.50.0060.0204.77
4.4.40.0050.0274.71
4.4.30.0050.0144.76
4.4.20.0040.0174.84
4.4.10.0070.0284.85
4.4.00.0050.0484.75
4.3.110.0070.0224.67
4.3.100.0040.0164.67
4.3.90.0100.0274.63
4.3.80.0030.0374.60
4.3.70.0060.0204.63
4.3.60.0070.0284.63
4.3.50.0040.0254.63
4.3.40.0060.0334.55
4.3.30.0040.0283.36
4.3.20.0020.0303.34
4.3.10.0020.0303.29
4.3.00.0300.01713.17

preferences:
55.14 ms | 401 KiB | 5 Q