Online PHP editor | perf for 5Xj4i

<?php // https://stackoverflow.com/questions/35536141/converting-binary-data-to-ascii-with-php-any-possibility/35536281#35536281 function bin2ascii($input) { $output = ''; for($i=0; $i<strlen($input); $i+=8) { $output .= chr(intval(substr($input, $i, 8), 2)); } return $output; } https://stackoverflow.com/questions/6382738/convert-string-to-binary-then-back-again-using-php/6382880#6382880 function ascii2bin($input) { //return array_reduce(str_split($input), fn ($acc, $i) => $acc .= decbin(ord($i))); return array_reduce(str_split($input), fn ($acc, $i) => $acc .= str_pad(decbin(ord($i)), 8, '0', STR_PAD_LEFT)); } // https://stackoverflow.com/questions/11946696/php-signed-binary-strings/11946971#11946971 function bindec2($bin) { if (strlen($bin) == 64 && $bin[0] == '1') { for ($i = 0; $i < 64; $i++) { $bin[$i] = $bin[$i] == '1' ? '0' : '1'; } return (bindec($bin) + 1) * -1; } return bindec($bin); } $i = -114514; var_dump(decbin($i)); $trimmedPadding = ltrim(decbin($i), $i < 0 ? '1' : '0'); var_dump($trimmedPadding); $signBitsPading = $i < 0 ? str_repeat('1', 8 - strlen($trimmedPadding) % 8) : str_repeat('0', 8 - strlen($trimmedPadding) % 8); var_dump($signBitsPading . $trimmedPadding); var_dump(bin2hex(bin2ascii($signBitsPading . $trimmedPadding))); $o = rtrim(base64_encode(bin2ascii($signBitsPading . $trimmedPadding)), '='); var_dump($o); $d = base64_decode($o); var_dump(bin2hex($d)); $bits = ascii2bin($d); $signBit = $bits[0]; $paddedBits = str_pad($bits, 64, $signBit, STR_PAD_LEFT); $restBits = substr($bits, 1); var_dump($bits); var_dump($signBit); var_dump($restBits); var_dump($paddedBits); var_dump(bindec($paddedBits)); var_dump(intval($paddedBits, 2)); var_dump(bindec2($paddedBits)); $paddedHexs = str_pad($d, 8, $signBit === '0' ? "\x00" : "\xFF", STR_PAD_LEFT); // 保持decbin()输出的大端序octet var_dump(bin2hex($paddedHexs)); var_dump(unpack('q', $paddedHexs)); // signed long long (always 64 bit, machine byte order) var_dump(unpack('Q', $paddedHexs)); // unsigned long long (always 64 bit, machine byte order) var_dump(unpack('J', $paddedHexs)); // unsigned long long (always 64 bit, big endian byte order) var_dump(unpack('P', $paddedHexs)); // unsigned long long (always 64 bit, little endian byte order) $paddedHexs = str_pad(strrev($d), 8, $signBit === '0' ? "\x00" : "\xFF", STR_PAD_RIGHT); // 大端序转小端序octet var_dump(bin2hex($paddedHexs)); var_dump(unpack('q', $paddedHexs)); // signed long long (always 64 bit, machine byte order) var_dump(unpack('Q', $paddedHexs)); // unsigned long long (always 64 bit, machine byte order) var_dump(unpack('J', $paddedHexs)); // unsigned long long (always 64 bit, big endian byte order) var_dump(unpack('P', $paddedHexs)); // unsigned long long (always 64 bit, little endian byte order)

Version	System time (s)	User time (s)	Memory (MiB)
8.3.11	0.008	0.000	16.75
8.3.10	0.011	0.000	16.45
8.3.9	0.012	0.004	26.77
8.3.8	0.003	0.006	18.55
8.3.7	0.007	0.015	16.88
8.3.6	0.003	0.013	16.88
8.3.5	0.015	0.000	16.82
8.3.4	0.010	0.003	20.29
8.3.3	0.006	0.009	18.98
8.3.2	0.007	0.000	24.18
8.3.1	0.003	0.006	24.66
8.3.0	0.000	0.008	26.16
8.2.23	0.003	0.006	20.94
8.2.22	0.007	0.003	24.06
8.2.21	0.011	0.004	26.77
8.2.20	0.006	0.003	16.88
8.2.19	0.012	0.003	16.58
8.2.18	0.009	0.006	25.92
8.2.17	0.012	0.003	19.21
8.2.16	0.009	0.006	22.96
8.2.15	0.006	0.003	25.66
8.2.14	0.008	0.000	24.66
8.2.13	0.008	0.000	26.16
8.2.12	0.004	0.004	26.16
8.2.11	0.009	0.000	20.35
8.2.10	0.014	0.000	17.72
8.2.9	0.008	0.000	17.84
8.2.8	0.005	0.003	17.50
8.2.7	0.006	0.003	17.50
8.2.6	0.004	0.004	17.80
8.2.5	0.003	0.006	18.07
8.2.4	0.000	0.008	21.11
8.2.3	0.008	0.000	18.24
8.2.2	0.004	0.004	19.35
8.2.1	0.007	0.004	17.72
8.2.0	0.000	0.009	17.77
8.1.29	0.007	0.003	30.84
8.1.28	0.013	0.006	25.92
8.1.27	0.005	0.003	24.66
8.1.26	0.004	0.004	26.35
8.1.25	0.004	0.004	28.09
8.1.24	0.010	0.000	22.60
8.1.23	0.008	0.004	21.01
8.1.22	0.005	0.003	17.78
8.1.21	0.010	0.000	19.10
8.1.20	0.000	0.009	17.48
8.1.19	0.004	0.004	17.60
8.1.18	0.004	0.004	18.10
8.1.17	0.004	0.004	18.63
8.1.16	0.004	0.004	18.88
8.1.15	0.008	0.000	18.72
8.1.14	0.008	0.003	17.38
8.1.13	0.015	0.004	17.48
8.1.12	0.017	0.007	17.53
8.1.11	0.008	0.012	17.52
8.1.10	0.017	0.006	17.47
8.1.9	0.015	0.006	17.50
8.1.8	0.015	0.004	17.54
8.1.7	0.016	0.004	17.53
8.1.6	0.009	0.009	17.61
8.1.5	0.015	0.003	17.52
8.1.4	0.003	0.007	17.66
8.1.3	0.007	0.007	17.54
8.1.2	0.009	0.006	17.59
8.1.1	0.014	0.007	17.55
8.1.0	0.009	0.009	17.46
8.0.30	0.000	0.007	19.96
8.0.29	0.000	0.007	16.88
8.0.28	0.007	0.000	18.52
8.0.27	0.011	0.005	16.84
8.0.26	0.013	0.004	16.75
8.0.25	0.010	0.007	16.88
8.0.24	0.013	0.004	16.80
8.0.23	0.017	0.003	16.89
8.0.22	0.015	0.003	16.83
8.0.21	0.020	0.000	16.68
8.0.20	0.010	0.005	16.90
8.0.19	0.013	0.004	17.01
8.0.18	0.016	0.000	16.87
8.0.17	0.011	0.004	16.84
8.0.16	0.010	0.005	16.80
8.0.15	0.008	0.005	16.74
8.0.14	0.015	0.004	16.70
8.0.13	0.014	0.003	16.83
8.0.12	0.005	0.008	16.75
8.0.11	0.007	0.007	16.76
8.0.10	0.008	0.008	16.86
8.0.9	0.006	0.011	16.83
8.0.8	0.009	0.003	16.91
8.0.7	0.013	0.005	16.80
8.0.6	0.012	0.005	16.83
8.0.5	0.007	0.010	16.76
8.0.3	0.012	0.006	16.82
8.0.2	0.011	0.007	16.90
8.0.1	0.000	0.015	16.96