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 echo utf8(0x67); $strTest='holá'; for($i = 0, $n = mb_strlen($strTest); $i < $n; $i++) { $mbchar = mb_substr($strTest, $i, 1); echo 'current char: '.$mbchar.' '; echo 'uniord= '.uniord($mbchar).' '; echo 'prev dec= '.(uniord($mbchar)-1).' '; echo 'prev hex= '.dechex(uniord($mbchar)-1).' '; echo 'prev char= '.utf8((uniord($mbchar)-1)).' - '; }

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)
8.3.40.0120.00618.77
8.3.30.0070.00718.95
8.3.20.0040.00420.21
8.3.10.0040.00423.66
8.3.00.0070.00319.26
8.2.170.0110.00322.96
8.2.160.0030.01020.39
8.2.150.0090.00024.18
8.2.140.0040.00424.66
8.2.130.0060.01126.16
8.2.120.0040.00422.21
8.2.110.0060.00321.92
8.2.100.0040.00817.66
8.2.90.0080.00019.10
8.2.80.0080.00017.97
8.2.70.0000.00917.50
8.2.60.0000.00817.68
8.2.50.0040.00418.07
8.2.40.0040.00419.82
8.2.30.0000.00917.97
8.2.20.0000.00817.57
8.2.10.0000.00717.87
8.2.00.0060.00617.64
8.1.270.0050.00323.96
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.85
8.1.230.0040.00719.16
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0060.00317.22
8.1.190.0060.00616.88
8.1.180.0030.00718.10
8.1.170.0040.00418.50
8.1.160.0070.00021.99
8.1.150.0040.00418.41
8.1.140.0000.00717.41
8.1.130.0000.00717.79
8.1.120.0040.00417.34
8.1.110.0050.00217.34
8.1.100.0070.00317.24
8.1.90.0000.00717.35
8.1.80.0070.00017.39
8.1.70.0040.00417.25
8.1.60.0030.00617.33
8.1.50.0050.00317.44
8.1.40.0030.00517.39
8.1.30.0040.00417.51
8.1.20.0060.00317.44
8.1.10.0000.00817.32
8.1.00.0000.00717.42
8.0.300.0000.00820.55
8.0.290.0000.00716.92
8.0.280.0000.00718.25
8.0.270.0000.00717.22
8.0.260.0000.00817.20
8.0.250.0030.00316.81
8.0.240.0000.00616.84
8.0.230.0030.00316.80
8.0.220.0050.00216.90
8.0.210.0040.00416.88
8.0.200.0030.00316.91
8.0.190.0000.00916.82
8.0.180.0040.00416.83
8.0.170.0090.00016.76
8.0.160.0000.00716.87
8.0.150.0000.00716.72
8.0.140.0040.00416.80
8.0.130.0000.00513.30
8.0.120.0020.00516.73
8.0.110.0040.00416.71
8.0.100.0020.00516.72
8.0.90.0040.00416.76
8.0.80.0060.00916.85
8.0.70.0040.00416.80
8.0.60.0000.00716.75
8.0.50.0050.00216.71
8.0.30.0080.01217.09
8.0.20.0120.00617.40
8.0.10.0040.00416.91
8.0.00.0070.00916.77
7.4.330.0000.00515.20
7.4.320.0040.00416.53
7.4.300.0000.00716.64
7.4.290.0070.00016.63
7.4.280.0070.00316.54
7.4.270.0040.00416.55
7.4.260.0060.00016.45
7.4.250.0050.00316.62
7.4.240.0030.00316.50
7.4.230.0070.00016.70
7.4.220.0070.01016.73
7.4.210.0020.01216.63
7.4.200.0050.00216.74
7.4.190.0030.00516.80
7.4.160.0030.01416.41
7.4.150.0110.00717.40
7.4.140.0110.00817.86
7.4.130.0130.00816.58
7.4.120.0080.01016.62
7.4.110.0140.00316.58
7.4.100.0070.01416.55
7.4.90.0100.01016.68
7.4.80.0080.01219.39
7.4.70.0060.01216.59
7.4.60.0170.00616.61
7.4.50.0040.00016.45
7.4.40.0100.00522.77
7.4.30.0060.00916.59
7.4.00.0030.01314.97
7.3.330.0030.00213.32
7.3.320.0000.00613.21
7.3.310.0040.00416.21
7.3.300.0050.00216.44
7.3.290.0050.00916.41
7.3.280.0100.00816.28
7.3.270.0140.00417.40
7.3.260.0120.00916.63
7.3.250.0150.00616.39
7.3.240.0110.00516.28
7.3.230.0070.01116.39
7.3.210.0140.00416.64
7.3.200.0090.01219.39
7.3.190.0040.01816.34
7.3.180.0030.01316.40
7.3.170.0100.00716.53
7.3.160.0090.00616.41
7.3.120.0060.00915.17
7.2.330.0040.01216.68
7.2.320.0070.01016.65
7.2.310.0130.01016.68
7.2.300.0000.01616.92
7.2.290.0130.00416.51
7.2.00.0110.00319.13
7.1.100.0040.00717.81
7.1.70.0040.00717.04
7.1.60.0130.00719.46
7.1.50.0200.01735.00
7.1.00.0030.07722.45
7.0.200.0000.01016.55
7.0.140.0000.07322.21
7.0.60.0330.06320.04
7.0.50.0070.08317.97
7.0.40.0130.05020.06
7.0.30.0200.05020.07
7.0.20.0300.07720.24
7.0.10.0030.09320.07
7.0.00.0100.04720.20
5.6.280.0030.07020.80
5.6.210.0000.04320.46
5.6.200.0130.07318.16
5.6.190.0130.03720.61
5.6.180.0170.08020.77
5.6.170.0170.05320.56
5.6.160.0030.09020.57
5.6.150.0030.04018.25
5.6.140.0000.04718.27
5.6.130.0030.06018.28
5.6.120.0170.07321.02
5.6.110.0100.08321.00
5.6.100.0030.04321.08
5.6.90.0070.08321.12
5.6.80.0170.07020.52
5.5.350.0130.08320.40
5.5.340.0230.06717.94
5.5.330.0130.07020.41
5.5.320.0030.05720.25
5.5.310.0330.04320.27
5.5.300.0070.07318.07
5.5.290.0070.07018.03
5.5.280.0000.04720.99
5.5.270.0130.08020.77
5.5.260.0200.07020.99
5.5.250.0070.08720.60
5.5.240.0230.04320.18
5.4.450.0600.06719.63
5.4.440.0870.07019.19
5.4.430.0130.05319.29
5.4.420.0770.05319.46
5.4.410.0700.05019.63
5.4.400.0400.07019.16
5.4.390.0070.06319.15
5.4.380.0300.05318.75
5.4.370.0400.04718.74
5.4.360.0130.05318.63
5.4.350.0270.05318.74
5.4.340.0400.03718.75
5.4.320.0070.03912.52
5.4.310.0070.03812.52
5.4.300.0100.03512.53
5.4.290.0030.04112.50
5.4.280.0090.03212.40
5.4.270.0080.03412.40
5.4.260.0110.03312.40
5.4.250.0100.03912.40
5.4.240.0060.03612.40
5.4.230.0050.04412.39
5.4.220.0030.04012.39
5.4.210.0070.03912.39
5.4.200.0070.03612.39
5.4.190.0080.03412.39
5.4.180.0060.03512.39
5.4.170.0070.03512.39
5.4.160.0060.03712.39
5.4.150.0070.03612.38
5.4.140.0050.03712.07
5.4.130.0020.04012.06
5.4.120.0050.03612.02
5.4.110.0070.03512.02
5.4.100.0050.03712.01
5.4.90.0060.03812.02
5.4.80.0050.03912.01
5.4.70.0100.03412.01
5.4.60.0070.04112.01
5.4.50.0030.04012.01
5.4.40.0040.03712.00
5.4.30.0060.03612.00
5.4.20.0060.03611.99
5.4.10.0060.03711.99
5.4.00.0080.03411.48
5.3.290.0050.03912.80
5.3.280.0080.03712.71
5.3.270.0080.03812.72
5.3.260.0090.03712.72
5.3.250.0060.03812.72
5.3.240.0030.04012.72
5.3.230.0040.04012.71
5.3.220.0080.03512.68
5.3.210.0110.04812.68
5.3.200.0070.04412.68
5.3.190.0080.04112.68
5.3.180.0070.03712.67
5.3.170.0070.04212.67
5.3.160.0100.03312.67
5.3.150.0090.04612.67
5.3.140.0100.04612.66
5.3.130.0080.03912.66
5.3.120.0110.04612.66
5.3.110.0160.04612.66
5.3.100.0120.04812.14
5.3.90.0110.04912.12
5.3.80.0090.04112.11
5.3.70.0120.03812.12
5.3.60.0120.04712.10
5.3.50.0080.03812.05
5.3.40.0070.03812.05
5.3.30.0130.02912.01
5.3.20.0100.03311.79
5.3.10.0080.03611.75
5.3.00.0070.03511.74
5.2.170.0080.0289.23
5.2.160.0070.0279.24
5.2.150.0060.0299.24
5.2.140.0080.0289.24
5.2.130.0070.0309.20
5.2.120.0060.0309.20
5.2.110.0100.0259.20
5.2.100.0060.0289.20
5.2.90.0080.0279.20
5.2.80.0080.0309.20
5.2.70.0070.0319.20
5.2.60.0100.0279.16
5.2.50.0050.0319.13
5.2.40.0080.0269.10
5.2.30.0040.0329.07
5.2.20.0040.0309.06
5.2.10.0030.0318.97
5.2.00.0060.0288.84
5.1.60.0040.0258.12
5.1.50.0020.0278.11
5.1.40.0030.0268.09
5.1.30.0080.0338.44
5.1.20.0070.0348.46
5.1.10.0070.0298.20
5.1.00.0080.0278.20
5.0.50.0030.0226.68
5.0.40.0020.0216.54
5.0.30.0040.0316.36
5.0.20.0050.0196.32
5.0.10.0060.0196.30
5.0.00.0060.0306.29
4.4.90.0050.0134.78
4.4.80.0020.0164.76
4.4.70.0040.0154.76
4.4.60.0030.0164.76
4.4.50.0020.0164.77
4.4.40.0020.0264.71
4.4.30.0040.0144.76
4.4.20.0030.0154.85
4.4.10.0010.0174.84
4.4.00.0040.0244.76
4.3.110.0030.0164.67
4.3.100.0050.0134.67
4.3.90.0050.0134.63
4.3.80.0060.0224.58
4.3.70.0030.0154.63
4.3.60.0040.0134.63
4.3.50.0020.0164.63
4.3.40.0040.0234.54
4.3.30.0010.0173.34
4.3.20.0040.0203.32
4.3.10.0020.0223.28
4.3.00.0270.01010.54

preferences:
39.33 ms | 400 KiB | 5 Q