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)
8.3.60.0060.00918.31
8.3.50.0190.00921.97
8.3.40.0180.00418.64
8.3.30.0120.00919.03
8.3.20.0040.00420.36
8.3.10.0070.00023.54
8.3.00.0000.00819.25
8.2.180.0060.01318.17
8.2.170.0090.00622.96
8.2.160.0190.00020.45
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0100.00726.16
8.2.120.0040.00422.11
8.2.110.0100.00022.06
8.2.100.0060.00617.80
8.2.90.0080.00019.07
8.2.80.0000.00817.97
8.2.70.0060.00317.38
8.2.60.0050.00317.80
8.2.50.0050.00318.07
8.2.40.0050.00319.76
8.2.30.0040.00417.95
8.2.20.0000.00817.51
8.2.10.0040.00419.76
8.2.00.0030.00717.46
8.1.280.0100.00325.92
8.1.270.0080.00824.01
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0070.00321.92
8.1.230.0090.00319.00
8.1.220.0000.00717.74
8.1.210.0000.00818.77
8.1.200.0000.00917.13
8.1.190.0030.00617.18
8.1.180.0020.00918.10
8.1.170.0080.00018.53
8.1.160.0040.00421.98
8.1.150.0070.00018.50
8.1.140.0070.00017.40
8.1.130.0070.00017.84
8.1.120.0000.00717.33
8.1.110.0000.00717.18
8.1.100.0060.00317.41
8.1.90.0000.00717.25
8.1.80.0040.00417.32
8.1.70.0030.00517.28
8.1.60.0070.00417.48
8.1.50.0000.00917.46
8.1.40.0040.00417.42
8.1.30.0040.00417.52
8.1.20.0000.00817.38
8.1.10.0000.00817.29
8.1.00.0040.00417.33
8.0.300.0000.00718.77
8.0.290.0030.00516.89
8.0.280.0070.00018.40
8.0.270.0000.00717.14
8.0.260.0060.00017.06
8.0.250.0030.00316.93
8.0.240.0000.00816.92
8.0.230.0000.00616.96
8.0.220.0040.00416.72
8.0.210.0030.00316.88
8.0.200.0040.00416.80
8.0.190.0050.00316.94
8.0.180.0040.00416.91
8.0.170.0000.00816.78
8.0.160.0000.00716.91
8.0.150.0000.00716.71
8.0.140.0030.00516.90
8.0.130.0030.00313.32
8.0.120.0000.00816.73
8.0.110.0040.00416.83
8.0.100.0000.00816.73
8.0.90.0040.00416.71
8.0.80.0040.01116.77
8.0.70.0070.00016.64
8.0.60.0050.00216.73
8.0.50.0040.00416.97
8.0.30.0090.01416.96
8.0.20.0130.00417.40
8.0.10.0040.00416.86
8.0.00.0150.00516.62
7.4.330.0030.00315.10
7.4.320.0030.00316.63
7.4.300.0030.00316.65
7.4.290.0000.00816.45
7.4.280.0070.00016.63
7.4.270.0030.00316.52
7.4.260.0030.00316.53
7.4.250.0080.00016.39
7.4.240.0020.00516.54
7.4.230.0030.00316.65
7.4.220.0090.00916.64
7.4.210.0080.00616.55
7.4.200.0030.00316.70
7.4.190.0000.00716.67
7.4.160.0060.00916.52
7.4.150.0100.00717.40
7.4.140.0100.00817.86
7.4.130.0090.01116.42
7.4.120.0120.00716.58
7.4.110.0070.01016.57
7.4.100.0060.01816.45
7.4.90.0120.00616.65
7.4.80.0070.01119.39
7.4.70.0050.01116.64
7.4.60.0030.01716.50
7.4.50.0000.00816.43
7.4.40.0000.01122.77
7.4.30.0060.00916.51
7.4.00.0050.01015.18
7.3.330.0020.00213.35
7.3.320.0030.00313.32
7.3.310.0000.00716.43
7.3.300.0000.00716.35
7.3.290.0100.01016.30
7.3.280.0090.00616.33
7.3.270.0070.01017.40
7.3.260.0070.01016.43
7.3.250.0110.01216.45
7.3.240.0110.00516.43
7.3.230.0070.01816.40
7.3.210.0080.00916.59
7.3.200.0140.00619.39
7.3.190.0120.00816.58
7.3.180.0030.01316.38
7.3.170.0130.00416.57
7.3.160.0040.01316.43
7.3.120.0060.01214.78
7.3.110.0080.00714.96
7.3.100.0080.00715.12
7.3.90.0080.00614.90
7.3.80.0060.00414.87
7.3.70.0040.00714.92
7.3.60.0060.00415.01
7.3.50.0070.00714.78
7.3.40.0080.00614.99
7.3.30.0060.00814.90
7.3.20.0090.00516.73
7.3.10.0030.01016.65
7.3.00.0020.01316.73
7.2.330.0060.01216.89
7.2.320.0050.01116.90
7.2.310.0120.00616.75
7.2.300.0070.01516.70
7.2.290.0130.01016.95
7.2.250.0070.00915.24
7.2.240.0040.01415.20
7.2.230.0070.00915.39
7.2.220.0050.00915.08
7.2.210.0020.01315.11
7.2.200.0060.00815.01
7.2.190.0100.00315.17
7.2.180.0030.00815.24
7.2.170.0080.00615.12
7.2.160.0090.00915.11
7.2.150.0000.01717.01
7.2.140.0080.00416.70
7.2.130.0070.00716.82
7.2.120.0040.00816.77
7.2.110.0030.01416.85
7.2.100.0030.00917.05
7.2.90.0090.00316.98
7.2.80.0070.00717.19
7.2.70.0030.00616.98
7.2.60.0090.00516.79
7.2.50.0030.01316.93
7.2.40.0070.01117.06
7.2.30.0050.00517.29
7.2.20.0030.00716.79
7.2.10.0060.00916.96
7.2.00.0040.01118.22
7.1.330.0050.01015.64
7.1.320.0050.00715.68
7.1.310.0030.00815.83
7.1.300.0100.00215.65
7.1.290.0070.00515.82
7.1.280.0080.00715.89
7.1.270.0080.00415.64
7.1.260.0040.01115.72
7.1.250.0030.00715.58
7.1.200.0070.00415.99
7.1.100.0040.00717.87
7.1.70.0030.01017.09
7.1.60.0130.00919.46
7.1.50.0100.01334.85
7.1.00.0000.08022.31
7.0.200.0240.00915.00
7.0.140.0070.07021.96
7.0.60.0130.07320.04
7.0.50.0100.08017.88
7.0.40.0070.04320.11
7.0.30.0270.08320.08
7.0.20.0300.07320.07
7.0.10.0030.06320.06
7.0.00.0070.04320.33
5.6.280.0070.07020.93
5.6.210.0070.07320.49
5.6.200.0070.08018.25
5.6.190.0130.07720.58
5.6.180.0100.05020.55
5.6.170.0270.05320.57
5.6.160.0000.05020.46
5.6.150.0030.05318.19
5.6.140.0130.07318.19
5.6.130.0100.07318.24
5.6.120.0170.07320.93
5.6.110.0070.08021.16
5.6.100.0070.08021.03
5.6.90.0100.08721.05
5.6.80.0070.07020.53
5.6.70.4300.03720.37
5.5.350.0030.04320.55
5.5.340.0070.06017.97
5.5.330.0030.09020.35
5.5.320.0070.08020.35
5.5.310.0230.07320.29
5.5.300.0030.05017.96
5.5.290.0030.09018.01
5.5.280.0030.04720.87
5.5.270.0070.07320.80
5.5.260.0070.08320.89
5.5.250.0100.07320.52
5.5.240.0170.07720.11
5.4.450.0000.07019.21
5.4.440.0930.06319.45
5.4.430.0830.06719.38
5.4.420.0630.00019.39
5.4.410.0030.06018.95
5.4.400.0330.04318.55
5.4.390.0130.06318.75
5.4.380.0370.07318.58
5.4.370.0130.04318.83
5.4.360.0130.04718.75
5.4.350.0060.03512.04
5.4.340.0040.03612.04
5.4.320.0100.03612.52
5.4.310.0070.03712.52
5.4.300.0060.03612.52
5.4.290.0080.05812.50
5.4.280.0080.05212.40
5.4.270.0110.04512.40
5.4.260.0210.08312.39
5.4.250.0170.05712.40
5.4.240.0160.04612.40
5.4.230.0090.05212.39
5.4.220.0030.04912.39
5.4.210.0100.06112.39
5.4.200.0090.04612.39
5.4.190.0120.05112.38
5.4.180.0130.07812.39
5.4.170.0180.08112.39
5.4.160.0110.05312.39
5.4.150.0130.04812.39
5.4.140.0110.05812.07
5.4.130.0090.05712.06
5.4.120.0200.10612.02
5.4.110.0060.05712.01
5.4.100.0150.05812.02
5.4.90.0100.06012.01
5.4.80.0110.05912.01
5.4.70.0080.05512.00
5.4.60.0090.05612.01
5.4.50.0130.06212.01
5.4.40.0070.05212.00
5.4.30.0100.05711.99
5.4.20.0100.04812.00
5.4.10.0100.05312.00
5.4.00.0150.05511.48
5.3.290.0090.03912.80
5.3.280.0110.05312.71
5.3.270.0070.05812.72
5.3.260.0140.06612.72
5.3.250.0100.05712.72
5.3.240.0110.05412.72
5.3.230.0150.05412.71
5.3.220.0130.05912.68
5.3.210.0100.05412.68
5.3.200.0080.07012.68
5.3.190.0120.05912.68
5.3.180.0040.04912.67
5.3.170.0060.04112.67
5.3.160.0090.05712.68
5.3.150.0110.05812.68
5.3.140.0090.05812.66
5.3.130.0200.06512.66
5.3.120.0140.05912.66
5.3.110.0080.05012.66
5.3.100.0090.03912.14
5.3.90.0090.03912.12
5.3.80.0080.04712.11
5.3.70.0090.04312.11
5.3.60.0110.05512.10
5.3.50.0140.05312.06
5.3.40.0200.04412.05
5.3.30.0100.04612.01
5.3.20.0080.04311.79
5.3.10.0110.05411.75
5.3.00.0090.05211.74
5.2.170.0070.0419.24
5.2.160.0200.0589.24
5.2.150.0070.0389.24
5.2.140.0150.0409.23
5.2.130.0100.0429.20
5.2.120.0110.0519.20
5.2.110.0090.0449.20
5.2.100.0070.0429.20
5.2.90.0110.0549.20
5.2.80.0130.0419.20
5.2.70.0080.0509.20
5.2.60.0160.0489.16
5.2.50.0080.0509.13
5.2.40.0100.0409.10
5.2.30.0200.0609.07
5.2.20.0150.0489.06
5.2.10.0150.0608.97
5.2.00.0090.0538.84
5.1.60.0170.0458.11
5.1.50.0080.0288.11
5.1.40.0130.0318.09
5.1.30.0150.0418.44
5.1.20.0140.0418.46
5.1.10.0240.0358.19
5.1.00.0080.0328.19
5.0.50.0160.0366.68
5.0.40.0130.0286.54
5.0.30.0080.0356.36
5.0.20.0090.0186.32
5.0.10.0090.0176.30
5.0.00.0170.0416.29
4.4.90.0030.0194.78
4.4.80.0030.0184.76
4.4.70.0090.0174.75
4.4.60.0050.0184.76
4.4.50.0030.0204.77
4.4.40.0030.0374.71
4.4.30.0050.0174.76
4.4.20.0030.0194.85
4.4.10.0070.0184.85
4.4.00.0060.0264.76
4.3.110.0080.0184.67
4.3.100.0040.0214.67
4.3.90.0050.0184.64
4.3.80.0050.0264.59
4.3.70.0050.0174.63
4.3.60.0030.0184.63
4.3.50.0110.0224.63
4.3.40.0150.0614.54
4.3.30.0080.0363.33
4.3.20.0030.0223.31
4.3.10.0030.0233.27
4.3.00.0130.0236.81

preferences:
30.67 ms | 401 KiB | 5 Q