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++) { $mbchar = mb_substr($strUTF8, $i, 1); echo 'current char: '.$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)
8.3.70.0150.00016.25
8.3.60.0000.01418.31
8.3.50.0130.01021.98
8.3.40.0120.00318.50
8.3.30.0140.00018.92
8.3.20.0070.00020.05
8.3.10.0080.00023.36
8.3.00.0040.00419.13
8.2.180.0080.00818.20
8.2.170.0180.00322.96
8.2.160.0170.00020.51
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0120.00426.16
8.2.120.0040.00422.30
8.2.110.0090.00022.09
8.2.100.0120.00017.72
8.2.90.0040.00418.96
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0090.00017.68
8.2.50.0000.00818.07
8.2.40.0050.00319.82
8.2.30.0030.00619.83
8.2.20.0040.00417.67
8.2.10.0040.00418.02
8.2.00.0070.00617.59
8.1.280.0120.00325.92
8.1.270.0040.00423.96
8.1.260.0080.00026.35
8.1.250.0060.00328.09
8.1.240.0090.00023.96
8.1.230.0110.00019.13
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0040.00417.23
8.1.190.0080.00017.28
8.1.180.0100.00018.10
8.1.170.0000.00818.52
8.1.160.0030.00721.90
8.1.150.0050.00318.46
8.1.140.0040.00417.23
8.1.130.0000.00717.84
8.1.120.0040.00417.39
8.1.110.0050.00317.41
8.1.100.0080.00317.27
8.1.90.0050.00217.38
8.1.80.0080.00017.41
8.1.70.0030.00317.32
8.1.60.0060.00317.48
8.1.50.0060.00317.32
8.1.40.0040.00417.34
8.1.30.0060.00317.52
8.1.20.0080.00017.59
8.1.10.0040.00417.42
8.1.00.0050.00317.34
8.0.300.0060.00318.77
8.0.290.0040.00417.05
8.0.280.0000.00718.28
8.0.270.0000.00717.16
8.0.260.0030.00317.03
8.0.250.0030.00316.82
8.0.240.0030.00316.96
8.0.230.0040.00416.81
8.0.220.0000.00716.86
8.0.210.0040.00416.74
8.0.200.0000.00616.86
8.0.190.0000.00716.81
8.0.180.0070.00016.85
8.0.170.0000.00816.77
8.0.160.0000.00816.91
8.0.150.0040.00416.74
8.0.140.0070.00016.82
8.0.130.0030.00313.29
8.0.120.0020.00516.83
8.0.110.0050.00216.85
8.0.100.0000.00816.82
8.0.90.0050.00216.82
8.0.80.0060.01816.88
8.0.70.0000.00716.92
8.0.60.0030.00516.73
8.0.50.0040.00416.67
8.0.30.0080.01017.07
8.0.20.0120.00817.40
8.0.10.0040.00416.89
8.0.00.0040.01516.51
7.4.330.0000.00615.13
7.4.320.0030.00516.66
7.4.300.0030.00316.66
7.4.290.0070.00016.51
7.4.280.0070.00416.55
7.4.270.0000.00716.54
7.4.260.0070.00016.59
7.4.250.0000.00816.62
7.4.240.0050.00216.56
7.4.230.0030.00316.68
7.4.220.0170.00016.58
7.4.210.0070.00916.59
7.4.200.0070.00016.48
7.4.190.0030.00316.72
7.4.160.0050.01016.46
7.4.150.0150.00417.40
7.4.140.0080.00917.86
7.4.130.0080.00916.73
7.4.120.0050.01416.67
7.4.110.0100.00816.61
7.4.100.0070.01416.67
7.4.90.0110.00716.62
7.4.80.0120.00619.39
7.4.70.0000.01816.66
7.4.60.0060.01516.53
7.4.50.0000.00416.46
7.4.40.0070.00722.77
7.4.30.0000.01716.40
7.4.00.0030.01214.95
7.3.330.0000.00613.50
7.3.320.0000.00613.35
7.3.310.0030.00516.38
7.3.300.0050.00316.50
7.3.290.0130.00816.43
7.3.280.0080.00916.45
7.3.270.0140.00317.40
7.3.260.0100.01016.58
7.3.250.0090.01116.69
7.3.240.0120.00616.44
7.3.230.0080.01216.39
7.3.210.0060.01216.47
7.3.200.0090.01019.39
7.3.190.0070.01116.52
7.3.180.0100.00716.40
7.3.170.0120.00316.43
7.3.160.0100.01316.42
7.3.120.0100.00715.02
7.2.330.0140.00316.79
7.2.320.0100.00616.73
7.2.310.0150.00316.81
7.2.300.0060.01316.89
7.2.290.0120.00616.67
7.2.00.0030.01019.13
7.1.100.0000.01118.12
7.1.70.0090.00517.25
7.1.60.0100.01319.46
7.1.50.0190.01634.68
7.1.00.0000.08022.47
7.0.200.0000.00716.92
7.0.140.0030.07021.99
7.0.60.0100.08319.97
7.0.50.0100.06717.88
7.0.40.0100.07020.13
7.0.30.0530.06720.07
7.0.20.0300.03720.02
7.0.10.0000.05020.10
7.0.00.0030.04320.09
5.6.280.0000.07020.91
5.6.210.0070.07720.63
5.6.200.0070.07018.27
5.6.190.0100.07320.56
5.6.180.0170.05720.61
5.6.170.0200.08320.47
5.6.160.0130.06720.62
5.6.150.0130.04718.18
5.6.140.0170.07018.13
5.6.130.0100.04318.18
5.6.120.0070.08321.16
5.6.110.0030.04321.13
5.6.100.0030.08321.04
5.6.90.0170.08021.00
5.6.80.0130.06720.55
5.5.350.0370.06720.54
5.5.340.0030.05018.05
5.5.330.0030.08020.46
5.5.320.0230.07720.20
5.5.310.0070.05020.26
5.5.300.0070.04018.09
5.5.290.0100.08017.97
5.5.280.0230.06320.70
5.5.270.0030.04720.90
5.5.260.0030.09020.75
5.5.250.0130.06320.70
5.5.240.0230.04020.21
5.4.450.0970.06319.48
5.4.440.0770.05019.59
5.4.430.0700.06019.57
5.4.420.0330.05319.56
5.4.410.0870.05319.32
5.4.400.0400.05719.13
5.4.390.0070.05719.37
5.4.380.0330.07018.71
5.4.370.0330.04718.48
5.4.360.0300.05018.61
5.4.350.0330.05318.52
5.4.340.0330.05318.49
5.4.320.0060.03612.52
5.4.310.0100.03412.52
5.4.300.0050.04212.52
5.4.290.0100.07812.50
5.4.280.0110.06012.40
5.4.270.0170.05612.40
5.4.260.0080.05712.39
5.4.250.0100.05312.40
5.4.240.0120.04912.40
5.4.230.0070.04912.39
5.4.220.0090.04812.39
5.4.210.0070.04612.39
5.4.200.0090.05112.39
5.4.190.0120.04612.39
5.4.180.0110.07412.38
5.4.170.0110.05412.39
5.4.160.0080.05412.39
5.4.150.0100.06712.39
5.4.140.0140.07912.07
5.4.130.0180.06412.06
5.4.120.0080.03912.02
5.4.110.0060.03712.01
5.4.100.0090.04012.01
5.4.90.0060.04112.00
5.4.80.0040.04412.02
5.4.70.0070.04112.01
5.4.60.0040.03812.01
5.4.50.0060.03712.01
5.4.40.0060.03612.00
5.4.30.0050.05012.00
5.4.20.0030.04911.99
5.4.10.0090.04611.99
5.4.00.0080.04811.48
5.3.290.0040.04012.80
5.3.280.0090.05112.71
5.3.270.0090.05212.73
5.3.260.0110.05012.72
5.3.250.0110.05012.72
5.3.240.0130.04612.72
5.3.230.0110.04712.71
5.3.220.0060.05312.68
5.3.210.0090.05212.67
5.3.200.0130.04512.68
5.3.190.0080.04812.68
5.3.180.0060.05012.68
5.3.170.0070.04212.67
5.3.160.0060.03912.67
5.3.150.0070.04112.67
5.3.140.0060.03912.66
5.3.130.0070.04012.65
5.3.120.0060.04212.66
5.3.110.0090.04912.66
5.3.100.0150.05812.14
5.3.90.0070.04712.12
5.3.80.0070.03912.12
5.3.70.0090.05012.11
5.3.60.0110.06112.10
5.3.50.0070.05112.05
5.3.40.0090.03712.05
5.3.30.0050.03712.01
5.3.20.0060.03911.79
5.3.10.0040.04211.75
5.3.00.0080.03711.74
5.2.170.0080.0359.24
5.2.160.0110.0389.24
5.2.150.0080.0429.24
5.2.140.0100.0459.23
5.2.130.0070.0419.20
5.2.120.0060.0469.19
5.2.110.0050.0429.21
5.2.100.0070.0419.20
5.2.90.0140.0379.20
5.2.80.0070.0459.20
5.2.70.0120.0639.19
5.2.60.0100.0989.16
5.2.50.0060.0519.13
5.2.40.0070.0419.10
5.2.30.0080.0459.07
5.2.20.0100.0409.06
5.2.10.0100.0428.96
5.2.00.0060.0458.84
5.1.60.0030.0388.11
5.1.50.0050.0348.11
5.1.40.0070.0348.09
5.1.30.0120.0378.44
5.1.20.0080.0438.46
5.1.10.0100.0388.19
5.1.00.0090.0388.20
5.0.50.0080.0286.68
5.0.40.0050.0316.53
5.0.30.0080.0456.34
5.0.20.0070.0276.30
5.0.10.0060.0276.29
5.0.00.0080.0366.29
4.4.90.0090.0224.78
4.4.80.0070.0204.75
4.4.70.0080.0204.76
4.4.60.0050.0234.75
4.4.50.0030.0264.77
4.4.40.0040.0314.71
4.4.30.0040.0244.76
4.4.20.0040.0244.85
4.4.10.0050.0224.85
4.4.00.0050.0324.76
4.3.110.0030.0234.67
4.3.100.0050.0214.67
4.3.90.0040.0234.63
4.3.80.0020.0364.58
4.3.70.0040.0224.63
4.3.60.0020.0244.63
4.3.50.0050.0234.63
4.3.40.0070.0314.54
4.3.30.0030.0223.34
4.3.20.0030.0243.32
4.3.10.0060.0173.28
4.3.00.0330.02010.54

preferences:
49.52 ms | 401 KiB | 5 Q