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<?php function ordutf8_step1(string $char) : int { $code = ord(substr($char, 0, 1)); if ($code >= 128) { if ($code < 224) $bytesnumber = 2; else if ($code < 240) $bytesnumber = 3; else if ($code < 248) $bytesnumber = 4; $codetemp = $code - 192 - ($bytesnumber > 2 ? 32 : 0) - ($bytesnumber > 3 ? 16 : 0); $offset = 0; for ($i = 2; $i <= $bytesnumber; $i++) { $offset ++; $code2 = ord(substr($char, $offset, 1)) - 128; $codetemp = $codetemp * 64 + $code2; } $code = $codetemp; } return $code; } function ordutf8_step2(string $char) : int { $code = ord(substr($char, 0, 1)); if ($code >= 128) { $count = 0; if ($code < 224) { $bytesnumber = 2; } else if ($code < 240) { $bytesnumber = 3; $count = 32; } else if ($code < 248) { $bytesnumber = 4; $count = 48; } $codetemp = $code - 192 - $count; $offset = 0; for ($i = 2; $i <= $bytesnumber; $i++) { $offset ++; $code2 = ord(substr($char, $offset, 1)) - 128; $codetemp = $codetemp * 64 + $code2; } $code = $codetemp; } return $code; } function ordutf8_step3(string $char) : int { $code = ord(substr($char, 0, 1)); if ($code >= 128) { $count = 0; if ($code < 224) { $bytes = 2; } else if ($code < 240) { $bytes = 3; $count = 32; } else if ($code < 248) { $bytes = 4; $count = 48; } $temp = $code - 192 - $count; for ($i = 1; $i < $bytes; $i++) { $code = $temp = $temp * 64 + ord(substr($char, $i, 1)) - 128; } } return $code; } function ordutf8_step4(string $char) : int { $code = ord(substr($char, 0, 1)); if ($code > 127) { $bytes = 2; $count = 0; if ($code > 223){ $bytes = 3; $count = 32; } if ($code > 239){ $bytes = 4; $count = 48; } $temp = $code - 192 - $count; for ($i = 1; $i < $bytes; $i++) { $code = $temp = $temp * 64 + ord(substr($char, $i, 1)) - 128; } } return $code; } function ordutf8_step5(string $char) : int { $code = ord(substr($char, 0, 1)); if ($code > 239){ return ((($code - 240) * 64 + ord(substr($char, 1, 1)) - 128) * 64 + ord(substr($char, 2, 1)) - 128) * 64 + ord(substr($char, 3, 1)) - 128; } if ($code > 223){ return (($code - 224) * 64 + ord(substr($char, 1, 1)) - 128) * 64 + ord(substr($char, 2, 1)) - 128; } if ($code > 127) { return ($code - 192) * 64 + ord(substr($char, 1, 1)) - 128; } return $code; } $cicles = 100000; $char = 'ݟ'; $time = -microtime(true); for($i = 0; $i < $cicles; $i++) { ordutf8_step1($char); } $time += microtime(true); echo $time; echo "\n"; $time = -microtime(true); for($i = 0; $i < $cicles; $i++) { ordutf8_step2($char); } $time += microtime(true); echo $time; echo "\n"; $time = -microtime(true); for($i = 0; $i < $cicles; $i++) { ordutf8_step3($char); } $time += microtime(true); echo $time; echo "\n"; $time = -microtime(true); for($i = 0; $i < $cicles; $i++) { ordutf8_step4($char); } $time += microtime(true); echo $time; echo "\n"; $time = -microtime(true); for($i = 0; $i < $cicles; $i++) { ordutf8_step5($char); } $time += microtime(true); echo $time;

Version	System time (s)	User time (s)	Memory (MiB)
7.4.0	0.007	0.222	15.00
7.3.12	0.007	0.176	14.85
7.3.11	0.003	0.223	14.86
7.3.10	0.007	0.200	14.80
7.3.9	0.007	0.214	14.86
7.3.8	0.007	0.189	14.81
7.3.7	0.010	0.171	14.84
7.3.6	0.003	0.193	15.05
7.3.5	0.000	0.170	14.65
7.3.4	0.010	0.167	14.64
7.3.3	0.007	0.195	14.95
7.3.2	0.000	0.171	16.77
7.3.1	0.007	0.166	16.33
7.3.0	0.007	0.166	16.33
7.2.25	0.000	0.291	15.39
7.2.24	0.010	0.280	15.19
7.2.23	0.003	0.193	15.14
7.2.22	0.003	0.215	15.00
7.2.21	0.003	0.200	14.84
7.2.20	0.013	0.178	15.21
7.2.19	0.003	0.178	15.09
7.2.18	0.000	0.231	15.07
7.2.17	0.007	0.212	15.23
7.2.16	0.007	0.190	15.31
7.2.15	0.010	0.179	17.02
7.2.14	0.000	0.211	17.05
7.2.13	0.000	0.180	17.00
7.2.12	0.003	0.194	17.00
7.2.11	0.000	0.198	16.84
7.2.10	0.007	0.199	16.92
7.2.9	0.003	0.186	17.09
7.2.8	0.003	0.180	16.97
7.2.7	0.007	0.173	16.68
7.2.6	0.007	0.161	16.93
7.2.5	0.010	0.183	17.13
7.2.4	0.000	0.170	17.10
7.2.3	0.000	0.180	16.85
7.2.2	0.007	0.173	17.04
7.2.1	0.010	0.182	17.02
7.2.0	0.005	0.136	18.31
7.1.33	0.003	0.330	15.89
7.1.32	0.003	0.340	15.87
7.1.31	0.000	0.302	15.87
7.1.30	0.003	0.352	15.96
7.1.29	0.007	0.310	15.81
7.1.28	0.007	0.346	15.74
7.1.27	0.003	0.309	15.76
7.1.26	0.000	0.291	15.80
7.1.25	0.007	0.310	16.03
7.1.12	0.003	0.128	18.70
7.1.11	0.007	0.126	18.15
7.1.10	0.007	0.126	18.33
7.1.9	0.007	0.129	18.12
7.1.8	0.007	0.123	17.96
7.1.7	0.004	0.133	17.20
7.1.6	0.017	0.126	35.26
7.1.5	0.014	0.129	35.01
7.1.4	0.017	0.127	34.29
7.1.3	0.013	0.125	34.58
7.1.2	0.017	0.120	34.58
7.1.1	0.003	0.125	16.76
7.1.0	0.007	0.116	16.70