* @author Peter Waller * @link http://aidanlister.com/repos/v/function.hexdump.php * * @param string $data The string to be dumped * @param bool $htmloutput Set to false for non-HTML output * @param bool $uppercase Set to true for uppercase hex * @param bool $return Set to true to return the dump * @return string|null */ public static function hexdump($data, $htmloutput = true, $uppercase = false, $return = false) { // Init $hexi = ''; $ascii = ''; $dump = $htmloutput ? '

' : '';
        $offset = 0;
        $len = mb_strlen($data, 'ASCII');

        // Upper or lower case hexidecimal
        $hexFormat = $uppercase ? 'X' : 'x';

        // Iterate string
        for ($i = $j = 0; $i < $len; $i++) {
            // Convert to hexidecimal
            // We must use concatenation here because the $hexFormat value
            // is needed for sprintf() to parse the format
            $hexi .= sprintf('%02' .  $hexFormat . ' ', ord($data[$i]));

            // Replace non-viewable bytes with '.'
            if (ord($data[$i]) >= 32) {
                $ascii .= $htmloutput ? htmlentities($data[$i]) : $data[$i];
            } else {
                $ascii .= '.';
            }

            // Add extra column spacing
            if ($j === 7) {
                $hexi .= ' ';
                $ascii .= ' ';
            }

            // Add row
            if (++$j === 16 || $i === $len - 1) {
                // Join the hexi / ascii output
                // We must use concatenation here because the $hexFormat value
                // is needed for sprintf() to parse the format
                $dump .= sprintf('%04' . $hexFormat . '  %-49s  %s', $offset, $hexi, $ascii);

                // Reset vars
                $hexi = $ascii = '';
                $offset += 16;
                $j = 0;

                // Add newline
                if ($i !== $len - 1) {
                    $dump .= PHP_EOL;
                }
            }
        }

        // Finish dump
        $dump .= $htmloutput ? '

' : ''; $dump .= PHP_EOL; if ($return) { return $dump; } echo $dump; } /** * @param array $table * @return string */ public static function dump_table($table) { $tokens = array(); foreach ($table as $name => $value) { switch ($value[0]) { case 'D': $val = $value[1]->n . 'E' . $value[1]->e; break; case 'F': $val = '(' . self::dump_table($value[1]) . ')'; break; case 'T': $val = date('Y-m-d H:i:s', $value[1]); break; default: $val = $value[1]; } $tokens[] = $name . '=' . $val; } return implode(', ', $tokens); } }