mirror of
https://github.com/phpbb/phpbb.git
synced 2025-02-26 13:04:24 +01:00
84 lines
1.9 KiB
PHP
84 lines
1.9 KiB
PHP
<?php
|
|
//
|
|
// This file provides some useful functions for debugging the unicode/UTF-8 library
|
|
// It requires utf_tools.php to be loaded
|
|
//
|
|
die("Please read the first lines of this script for instructions on how to enable it");
|
|
|
|
if (!headers_sent())
|
|
{
|
|
header('Content-type: text/html; charset=UTF-8');
|
|
}
|
|
|
|
/**
|
|
* Converts unicode escape sequences (\u0123) into UTF-8 characters
|
|
*
|
|
* @param string A unicode sequence
|
|
* @return string UTF-8 representation of the given unicode sequence
|
|
*/
|
|
function unicode_to_utf8($string)
|
|
{
|
|
$utf8 = '';
|
|
$chars = array();
|
|
for ($i = 0; $i < strlen($string); $i++)
|
|
{
|
|
if (isset($string[$i + 5]) && substr($string, $i, 2) == '\\u' && ctype_xdigit(substr($string, $i + 2, 4)))
|
|
{
|
|
$utf8 .= utf8_from_unicode(array(base_convert(substr($string, $i + 2, 4), 16, 10)));
|
|
$i += 5;
|
|
}
|
|
else
|
|
{
|
|
$utf8 .= $string[$i];
|
|
}
|
|
}
|
|
return $utf8;
|
|
}
|
|
|
|
/**
|
|
* Takes an array of ints representing the Unicode characters and returns
|
|
* a UTF-8 string.
|
|
*
|
|
* @param array $array array of unicode code points representing a string
|
|
* @return string UTF-8 character string
|
|
*/
|
|
function utf8_from_unicode($array)
|
|
{
|
|
$str = '';
|
|
foreach ($array as $value)
|
|
{
|
|
$str .= utf8_chr($value);
|
|
}
|
|
return $str;
|
|
}
|
|
|
|
/**
|
|
* Converts a UTF-8 string to unicode code points
|
|
*
|
|
* @param string $text UTF-8 string
|
|
* @return string Unicode code points
|
|
*/
|
|
function utf8_to_unicode($text)
|
|
{
|
|
return preg_replace_callback(
|
|
'#[\\xC2-\\xF4][\\x80-\\xBF]?[\\x80-\\xBF]?[\\x80-\\xBF]#',
|
|
'utf8_to_unicode_callback',
|
|
preg_replace_callback(
|
|
'#[\\x00-\\x7f]#',
|
|
'utf8_to_unicode_callback',
|
|
$text
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Takes a UTF-8 char and replaces it with its unicode escape sequence. Attention, $m is an array
|
|
*
|
|
* @param array $m 0-based numerically indexed array passed by preg_replace_callback()
|
|
* @return string A unicode escape sequence
|
|
*/
|
|
function utf8_to_unicode_callback($m)
|
|
{
|
|
return '\u' . str_pad(base_convert(utf8_ord($m[0]), 10, 16), 4, '0', STR_PAD_LEFT) . '';
|
|
}
|