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)
8.3.60.0140.00316.38
8.3.50.0140.00322.02
8.3.40.0120.00618.84
8.3.30.0070.01019.14
8.3.20.0040.00420.16
8.3.10.0000.00821.86
8.3.00.0050.00319.10
8.2.180.0160.00618.18
8.2.170.0070.00722.96
8.2.160.0070.00720.25
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00422.27
8.2.110.0060.00322.08
8.2.100.0060.00617.66
8.2.90.0000.00819.05
8.2.80.0060.00317.97
8.2.70.0000.00817.50
8.2.60.0000.00817.80
8.2.50.0030.00518.07
8.2.40.0080.00019.75
8.2.30.0060.00317.90
8.2.20.0070.00017.62
8.2.10.0040.00417.88
8.2.00.0120.00017.59
8.1.280.0070.01025.92
8.1.270.0060.00322.09
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.98
8.1.230.0000.01119.15
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0070.00317.10
8.1.190.0050.00317.13
8.1.180.0120.00018.10
8.1.170.0060.00318.52
8.1.160.0050.00221.98
8.1.150.0000.00818.54
8.1.140.0000.00717.41
8.1.130.0000.00717.79
8.1.120.0050.00217.36
8.1.110.0030.00517.25
8.1.100.0030.00717.39
8.1.90.0040.00417.36
8.1.80.0050.00317.38
8.1.70.0040.00417.33
8.1.60.0030.00617.37
8.1.50.0040.00417.41
8.1.40.0040.00417.41
8.1.30.0000.00817.51
8.1.20.0080.00017.48
8.1.10.0000.00817.30
8.1.00.0040.00417.23
8.0.300.0000.00720.62
8.0.290.0100.00016.93
8.0.280.0000.00718.33
8.0.270.0050.00317.16
8.0.260.0000.00717.12
8.0.250.0000.00716.92
8.0.240.0030.00316.93
8.0.230.0030.00316.82
8.0.220.0040.00416.86
8.0.210.0040.00416.86
8.0.200.0000.00616.90
8.0.190.0050.00216.90
8.0.180.0030.00616.89
8.0.170.0050.00316.76
8.0.160.0030.00316.89
8.0.150.0030.00316.76
8.0.140.0070.00016.87
8.0.130.0060.00013.25
8.0.120.0040.00416.80
8.0.110.0070.00016.80
8.0.100.0070.00016.80
8.0.90.0000.00816.68
8.0.80.0110.00416.87
8.0.70.0020.00516.89
8.0.60.0080.00016.83
8.0.50.0040.00416.97
8.0.30.0160.00517.07
8.0.20.0080.01417.40
8.0.10.0040.00416.88
8.0.00.0110.00916.59
7.4.330.0000.00515.15
7.4.320.0040.00416.69
7.4.300.0000.00616.70
7.4.290.0030.00716.70
7.4.280.0050.00216.48
7.4.270.0030.00516.43
7.4.260.0000.00716.63
7.4.250.0030.00616.54
7.4.240.0020.00616.57
7.4.230.0070.00016.76
7.4.220.0100.00716.59
7.4.210.0100.00416.53
7.4.200.0030.00516.55
7.4.190.0000.00716.64
7.4.160.0130.00316.63
7.4.150.0160.00317.40
7.4.140.0090.00817.86
7.4.130.0110.00616.61
7.4.120.0150.00616.68
7.4.110.0040.01816.66
7.4.100.0110.00816.56
7.4.90.0090.00916.77
7.4.80.0060.02019.39
7.4.70.0080.00816.66
7.4.60.0070.01316.48
7.4.50.0000.00616.50
7.4.40.0070.00722.77
7.4.30.0120.00316.65
7.4.00.0070.00915.10
7.3.330.0000.00513.36
7.3.320.0060.00013.40
7.3.310.0030.00516.30
7.3.300.0030.00316.36
7.3.290.0060.00916.41
7.3.280.0090.01116.37
7.3.270.0070.01017.40
7.3.260.0090.00816.66
7.3.250.0120.01116.51
7.3.240.0080.00816.56
7.3.230.0110.00616.40
7.3.210.0100.00716.58
7.3.200.0090.01319.39
7.3.190.0030.01416.57
7.3.180.0060.00916.41
7.3.170.0040.01116.62
7.3.160.0030.01316.52
7.3.120.0050.00914.64
7.3.110.0040.01015.04
7.3.100.0030.01614.67
7.3.90.0050.00815.07
7.3.80.0080.00415.00
7.3.70.0030.01314.95
7.3.60.0080.00814.96
7.3.50.0080.00614.70
7.3.40.0030.00914.75
7.3.30.0040.00814.70
7.3.20.0000.01316.57
7.3.10.0000.01416.77
7.3.00.0070.01016.66
7.2.330.0110.00816.70
7.2.320.0140.00716.74
7.2.310.0060.01116.78
7.2.300.0060.00916.67
7.2.290.0130.00916.54
7.2.250.0060.01315.32
7.2.240.0140.00715.21
7.2.230.0030.01214.95
7.2.220.0030.01315.23
7.2.210.0100.00615.12
7.2.200.0060.00615.00
7.2.190.0040.01115.03
7.2.180.0070.00715.26
7.2.170.0070.00715.14
7.2.160.0090.00615.24
7.2.150.0130.00316.79
7.2.140.0040.00816.86
7.2.130.0000.01317.00
7.2.120.0040.01116.93
7.2.110.0070.01017.01
7.2.100.0080.00616.98
7.2.90.0060.01017.03
7.2.80.0060.00916.74
7.2.70.0070.01116.92
7.2.60.0120.00316.91
7.2.50.0110.00816.83
7.2.40.0100.00616.75
7.2.30.0060.00616.80
7.2.20.0100.00316.82
7.2.10.0110.00716.89
7.2.00.0070.00618.33
7.1.330.0130.00615.88
7.1.320.0110.00415.93
7.1.310.0100.00716.05
7.1.300.0100.00015.88
7.1.290.0000.01415.64
7.1.280.0160.00015.60
7.1.270.0000.01315.84
7.1.260.0040.00815.83
7.1.250.0030.01015.40
7.1.240.0060.00615.72
7.1.230.0110.00315.61
7.1.220.0030.01015.76
7.1.210.0030.00915.77
7.1.200.0060.00615.73
7.1.190.0120.00615.74
7.1.180.0130.00315.63
7.1.170.0080.00415.92
7.1.160.0090.00615.92
7.1.150.0000.00915.86
7.1.140.0030.01015.85
7.1.130.0080.00515.58
7.1.120.0060.00315.77
7.1.110.0070.00715.73
7.1.100.0070.00516.98
7.1.90.0030.01015.54
7.1.80.0040.00815.84
7.1.70.0060.00516.56
7.1.60.0090.00717.61
7.1.50.0120.00916.30
7.1.40.0030.01015.71
7.1.30.0030.01315.78
7.1.20.0110.00415.65
7.1.10.0040.01215.79
7.1.00.0020.04519.16
7.0.330.0000.01215.45
7.0.320.0000.01615.57
7.0.310.0050.00515.45
7.0.300.0060.00615.13
7.0.290.0060.00615.40
7.0.280.0030.00615.41
7.0.270.0070.01015.50
7.0.260.0070.00415.36
7.0.250.0080.00415.43
7.0.240.0040.01115.57
7.0.230.0060.00615.30
7.0.220.0030.01015.42
7.0.210.0030.00615.50
7.0.200.0050.00715.98
7.0.190.0100.00315.40
7.0.180.0030.01315.21
7.0.170.0040.01115.43
7.0.160.0070.00715.39
7.0.150.0040.01215.09
7.0.140.0080.03818.65
7.0.130.0100.00315.58
7.0.120.0100.00315.16
7.0.110.0090.00615.49
7.0.100.0070.01015.25
7.0.90.0090.00615.39
7.0.80.0120.00315.34
7.0.70.0060.00915.50
7.0.60.0060.04117.58
7.0.50.0030.03816.69
7.0.40.0090.04416.74
7.0.30.0150.03416.86
7.0.20.0170.03416.70
7.0.10.0070.04716.79
7.0.00.0050.04516.87
5.6.400.0070.00713.93
5.6.390.0040.00814.56
5.6.380.0110.00714.52
5.6.370.0060.00914.35
5.6.360.0070.00714.39
5.6.350.0030.01014.62
5.6.340.0030.00614.48
5.6.330.0000.01614.64
5.6.320.0040.01114.21
5.6.310.0040.01214.74
5.6.300.0090.00914.04
5.6.290.0040.00814.30
5.6.280.0050.03817.57
5.6.270.0030.01014.60
5.6.260.0030.01414.60
5.6.250.0060.00914.46
5.6.240.0130.00314.46
5.6.230.0060.00914.59
5.6.220.0030.01214.53
5.6.210.0070.04017.54
5.6.200.0050.04516.18
5.6.190.0030.03417.34
5.6.180.0100.02517.58
5.6.170.0140.02217.58
5.6.160.0070.02817.49
5.6.150.0050.04416.46
5.6.140.0020.04916.30
5.6.130.0110.04116.38
5.6.120.0090.04517.71
5.6.110.0070.02217.85
5.6.100.0100.02217.66
5.6.90.0160.03317.73
5.6.80.0070.03017.64
5.6.70.0100.00714.37
5.6.60.0060.00614.18
5.6.50.0120.00314.29
5.6.40.0070.01014.35
5.6.30.0090.01214.06
5.6.20.0040.01114.52
5.6.10.0060.01314.43
5.6.00.0070.01114.29
5.5.380.0110.00414.18
5.5.370.0070.01314.48
5.5.360.0030.01014.30
5.5.350.0180.03717.46
5.5.340.0060.04116.20
5.5.330.0100.02717.21
5.5.320.0190.02217.28
5.5.310.0180.04017.36
5.5.300.0030.02416.16
5.5.290.0070.04616.15
5.5.280.0080.02517.80
5.5.270.0070.04217.38
5.5.260.0110.04517.54
5.5.250.0070.04317.48
5.5.240.0180.01717.18
5.5.230.0140.00414.18
5.5.220.0030.01314.00
5.5.210.0000.01014.38
5.5.200.0070.00714.23
5.5.190.0000.01314.41
5.5.180.0000.01114.27
5.5.170.0090.00614.27
5.5.160.0030.01314.10
5.5.150.0030.00914.46
5.5.140.0060.00614.42
5.5.130.0000.01114.43
5.5.120.0030.01013.95
5.5.110.0030.00613.98
5.5.100.0080.00414.38
5.5.90.0080.00814.26
5.5.80.0080.00814.15
5.5.70.0100.00313.84
5.5.60.0030.01414.34
5.5.50.0040.01114.05
5.5.40.0060.00814.27
5.5.30.0040.01114.43
5.5.20.0070.00714.15
5.5.10.0000.01114.30
5.5.00.0040.01114.05
5.4.450.0400.03015.14
5.4.440.0400.03715.21
5.4.430.0420.02815.46
5.4.420.0380.02915.26
5.4.410.0370.03215.16
5.4.400.0430.02315.18
5.4.390.0400.03215.22
5.4.380.0150.03214.85
5.4.370.0260.03014.87
5.4.360.0130.03414.84
5.4.350.0180.04014.87
5.4.340.0150.03114.93
5.4.330.0030.00911.25
5.4.320.0080.02311.73
5.4.310.0070.02311.71
5.4.300.0030.02411.71
5.4.290.0050.02511.64
5.4.280.0080.02611.74
5.4.270.0060.02811.59
5.4.260.0060.02511.88
5.4.250.0060.02111.78
5.4.240.0050.02511.59
5.4.230.0080.02811.84
5.4.220.0070.02211.79
5.4.210.0080.02011.59
5.4.200.0020.03511.63
5.4.190.0030.02511.73
5.4.180.0050.02111.80
5.4.170.0060.02311.66
5.4.160.0050.02211.84
5.4.150.0110.02111.70
5.4.140.0050.03311.59
5.4.130.0080.02811.64
5.4.120.0080.02711.70
5.4.110.0110.02311.56
5.4.100.0040.02711.49
5.4.90.0080.03311.57
5.4.80.0070.02511.59
5.4.70.0040.02411.56
5.4.60.0050.02311.59
5.4.50.0090.01811.61
5.4.40.0050.02011.47
5.4.30.0020.02211.62
5.4.20.0080.01911.52
5.4.10.0040.02511.57
5.4.00.0080.02611.36
5.3.290.0070.02111.59
5.3.280.0050.02611.66
5.3.270.0060.02911.67
5.3.260.0060.03011.56
5.3.250.0040.03311.62
5.3.240.0040.03211.50
5.3.230.0060.03111.56
5.3.220.0150.04311.66
5.3.210.0060.03111.66
5.3.200.0060.02811.60
5.3.190.0080.02811.69
5.3.180.0090.02611.75
5.3.170.0050.02511.79
5.3.160.0040.02511.72
5.3.150.0070.02611.69
5.3.140.0040.02911.70
5.3.130.0050.03011.71
5.3.120.0100.04411.66
5.3.110.0080.02311.65
5.3.100.0050.02311.31
5.3.90.0130.03411.36
5.3.80.0110.02411.33
5.3.70.0090.02511.40
5.3.60.0070.02011.43
5.3.50.0050.02611.30
5.3.40.0040.02811.33
5.3.30.0060.02711.34
5.3.20.0050.02711.22
5.3.10.0060.02111.17
5.3.00.0020.02511.10
5.2.170.0070.0309.24
5.2.160.0080.0409.24
5.2.150.0090.0459.24
5.2.140.0100.0389.24
5.2.130.0100.0559.20
5.2.120.0120.0479.20
5.2.110.0050.0459.21
5.2.100.0060.0509.20
5.2.90.0130.0429.20
5.2.80.0090.0419.20
5.2.70.0090.0459.20
5.2.60.0080.0399.16
5.2.50.0050.0449.13
5.2.40.0090.0409.10
5.2.30.0100.0439.07
5.2.20.0070.0409.06
5.2.10.0060.0308.96
5.2.00.0050.0438.84
5.1.60.0080.0448.12
5.1.50.0080.0358.11
5.1.40.0080.0358.09
5.1.30.0050.0508.44
5.1.20.0090.0358.46
5.1.10.0050.0358.19
5.1.00.0100.0538.19
5.0.50.0050.0406.68
5.0.40.0070.0336.53
5.0.30.0020.0456.35
5.0.20.0030.0216.33
5.0.10.0040.0226.31
5.0.00.0040.0346.30
4.4.90.0050.0164.78
4.4.80.0040.0164.75
4.4.70.0040.0164.75
4.4.60.0060.0154.75
4.4.50.0030.0244.77
4.4.40.0080.0504.71
4.4.30.0010.0254.76
4.4.20.0050.0214.84
4.4.10.0030.0244.84
4.4.00.0030.0344.76
4.3.110.0020.0194.67
4.3.100.0040.0214.66
4.3.90.0070.0134.64
4.3.80.0030.0334.60
4.3.70.0030.0224.63
4.3.60.0050.0214.63
4.3.50.0030.0224.63
4.3.40.0050.0334.55
4.3.30.0030.0243.36
4.3.20.0010.0193.34
4.3.10.0000.0213.29
4.3.00.0370.01710.54

preferences:
47.71 ms | 401 KiB | 5 Q