Đã nhiều năm sau, nhưng trong trường hợp những người khác cũng đang tìm kiếm điều này, tôi đã tự do sửa đổi mã của mindplay.dk để làm cho nó chấp nhận các tùy chọn khác nhau và mô phỏng đầu ra của tệp hexdump -C của lệnh BSD:
/** * Dumps a string into a traditional hex dump for programmers, * in a format similar to the output of the BSD command hexdump -C file. * The default result is a string. * Supported options: * <pre> * line_sep - line seperator char, default = "\n" * bytes_per_line - default = 16 * pad_char - character to replace non-readble characters with, default = '.' * </pre> * * @param string $string * @param array $options * @param string|array */ function hex_dump($string, array $options = null) { if (!is_scalar($string)) { throw new InvalidArgumentException('$string argument must be a string'); } if (!is_array($options)) { $options = array(); } $line_sep = isset($options['line_sep']) ? $options['line_sep'] : "\n"; $bytes_per_line = @$options['bytes_per_line'] ? $options['bytes_per_line'] : 16; $pad_char = isset($options['pad_char']) ? $options['pad_char'] : '.'; # padding for non-readable characters $text_lines = str_split($string, $bytes_per_line); $hex_lines = str_split(bin2hex($string), $bytes_per_line * 2); $offset = 0; $output = array(); $bytes_per_line_div_2 = (int)($bytes_per_line / 2); foreach ($hex_lines as $i => $hex_line) { $text_line = $text_lines[$i]; $output []= sprintf('%08X',$offset) . ' ' . str_pad( strlen($text_line) > $bytes_per_line_div_2 ? implode(' ', str_split(substr($hex_line,0,$bytes_per_line),2)) . ' ' . implode(' ', str_split(substr($hex_line,$bytes_per_line),2)) : implode(' ', str_split($hex_line,2)) , $bytes_per_line * 3) . ' |' . preg_replace('/[^\x20-\x7E]/', $pad_char, $text_line) . '|'; $offset += $bytes_per_line; } $output []= sprintf('%08X', strlen($string)); return @$options['want_array'] ? $output : join($line_sep, $output) . $line_sep; }và đây là kết xuất hex của một tệp nhỏ:
00000000 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 |.PNG........IHDR| 00000010 00 00 00 10 00 00 00 10 02 03 00 00 00 62 9d 17 |.............b..| 00000020 f2 00 00 00 09 50 4c 54 45 04 04 04 99 99 cc d7 |.....PLTE.......| 00000030 d7 d7 2a 66 f6 6b 00 00 00 38 49 44 41 54 78 9c |..*f.k...8IDATx.| 00000040 63 08 05 02 06 24 22 0b 44 24 01 89 ac a4 69 4b |c....$".D$....iK| 00000050 19 1a 16 68 70 31 74 29 75 2c 42 22 1a 16 75 00 |...hp1t)u,B"..u.| 00000060 c5 22 33 96 32 74 86 46 4c 65 58 19 1a 35 15 61 |."3.2t.FLeX..5.a| 00000070 00 00 df be 19 a6 2e 62 80 87 00 00 00 00 49 45 |.......b......IE| 00000080 4e 44 ae 42 60 82 |ND.B`.| 00000086và đây là bài kiểm tra phpunit:
<?php if (isset($argv)) { print "Running outside of phpunit. Consider using phpunit.\n"; class PHPUnit_Framework_TestCase {} } class Test extends PHPUnit_Framework_TestCase { const FUNCTION_NAME = 'hex_dump'; const DATA_BASE64 = ' iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAgMAAABinRfyAAAACVBMVEUEBASZmczX19cqZvZrAAAA OElEQVR4nGMIBQIGJCILRCQBiaykaUsZGhZocDF0KXUsQiIaFnUAxSIzljJ0hkZMZVgZGjUVYQAA 374Zpi5igIcAAAAASUVORK5CYII='; private $expect = array( '00000000 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 |.PNG........IHDR|', '00000010 00 00 00 10 00 00 00 10 02 03 00 00 00 62 9d 17 |.............b..|', '00000020 f2 00 00 00 09 50 4c 54 45 04 04 04 99 99 cc d7 |.....PLTE.......|', '00000030 d7 d7 2a 66 f6 6b 00 00 00 38 49 44 41 54 78 9c |..*f.k...8IDATx.|', '00000040 63 08 05 02 06 24 22 0b 44 24 01 89 ac a4 69 4b |c....$".D$....iK|', '00000050 19 1a 16 68 70 31 74 29 75 2c 42 22 1a 16 75 00 |...hp1t)u,B"..u.|', '00000060 c5 22 33 96 32 74 86 46 4c 65 58 19 1a 35 15 61 |."3.2t.FLeX..5.a|', '00000070 00 00 df be 19 a6 2e 62 80 87 00 00 00 00 49 45 |.......b......IE|', '00000080 4e 44 ae 42 60 82 |ND.B`.|', '00000086', ); public function testRequire() { $file = __DIR__ . '/' . static::FUNCTION_NAME . '.php'; $this->assertFileExists($file); include($file); $this->assertTrue(function_exists(static::FUNCTION_NAME)); } public function testString() { $func = static::FUNCTION_NAME; $data = base64_decode(static::DATA_BASE64); if (!is_string($data)) { throw new Exception('Unable to decode base64 encoded test data'); } $dump = $func($data); //var_export($dump); $this->assertTrue(is_string($dump)); $this->assertEquals($dump, join("\n", $this->expect) . "\n"); } } if (isset($argv)) { $func = Test::FUNCTION_NAME; require_once($func . '.php'); if (count($argv) < 2) { print "Pass arguments file, from, length.\n"; } else { $file = $argv[1]; if (!file_exists($file)) { die("File not found: $file\n"); } $from = isset($argv[2]) && preg_match('/^\d{1,9}$/', $argv[2]) ? intval($argv[2]) : null; $len = isset($argv[3]) && preg_match('/^\d{1,9}$/', $argv[3]) ? intval($argv[3]) : filesize($file); $h = fopen($file, 'r'); if ($from) { fseek($h, $from); } $data = fread($h, $len); fclose($h); $dump = hex_dump($data); print $dump; //$dump = hex_dump($data, array('want_array' => true)); //print_r($dump); } }9 hữu ích 2 bình luận chia sẻ