Online methods have many, are the same principle, in accordance with the requirements, did a version of the class file, the main function is: clear function, easy to modify maintenance and expansion; English strings: return (including numbers); Chinese string: return pinyin first character; The algorithm uses a two-point method to find and fix the error of the previous letter Z reading into Y. Good things to collect, so leave a mark here, for posterity textual research!
Copy CodeThe code is as follows:
/**
* Modified by http://iulog.com @ 2013-05-07
* Fix the method of finding binary method
* Chinese Pinyin first Letter tool class
* Note: The English string: Unchanged returns (including numbers) eg. abc123 = abc123
* Chinese string: Returns the pinyin first character eg. Test String = = CSZFC
* Chinese-English mixed string: Returns the pinyin first character and English eg. I i i j = wiwj
* eg.
* $py = new str2py ();
* $result = $py->getinitials (' Ah, just the hungry fly just fine I saw you oh flat to people is he UV I want to one in ');
*/
Class Str2py
{
Private $_pinyins = Array (
176161 = ' A ',
176197 = ' B ',
178193 = ' C ',
180238 = ' D ',
182234 = ' E ',
183162 = ' F ',
184193 = ' G ',
185254 = ' H ',
187247 = ' J ',
191166 = ' K ',
192172 = ' L ',
194232 = ' M ',
196195 = ' N ',
197182 = ' O ',
197190 = ' P ',
198218 = ' Q ',
200187 = ' R ',
200246 = ' S ',
203250 = ' T ',
205218 = ' W ',
206244 = ' X ',
209185 = ' Y ',
212209 = ' Z ',
);
Private $_charset = null;
/**
* constructor, specifying the required encoding Default:utf-8
* Support Utf-8, gb2312
*
* @param unknown_type $charset
*/
Public function __construct ($charset = ' utf-8 ')
{
$this->_charset = $charset;
}
/**
* Chinese string substr
*
* @param string $str
* @param int $start
* @param int $len
* @return String
*/
Private Function _msubstr ($str, $start, $len)
{
$start = $start * 2;
$len = $len * 2;
$strlen = strlen ($STR);
$result = ";
for ($i = 0; $i < $strlen; $i + +) {
if ($i >= $start && $i < ($start + $len)) {
if (Ord (substr ($str, $i, 1)) > 129) $result. = substr ($str, $i, 2);
else $result. = substr ($str, $i, 1);
}
if (Ord (substr ($str, $i, 1)) > 129) $i + +;
}
return $result;
}
/**
* string is divided into arrays (Chinese characters or one character units)
*
* @param string $str
* @return Array
*/
Private Function _cutword ($STR)
{
$words = Array ();
while ($str! = "")
{
if ($this->_isascii ($STR)) {/* Non-Chinese */
$words [] = $str [0];
$str = substr ($str, strlen ($str [0]);
}else{
$word = $this->_msubstr ($str, 0, 1);
$words [] = $word;
$str = substr ($str, strlen ($word));
}
}
return $words;
}
/**
* Determines whether a character is an ASCII character
*
* @param string $char
* @return BOOL
*/
Private Function _isascii ($char)
{
Return (Ord (substr ($char, 0,1)) < 160);
}
/**
* Determines whether the first 3 characters of a string are ASCII characters
*
* @param string $str
* @return BOOL
*/
Private Function _isasciis ($STR)
{
$len = strlen ($str) >= 3? 3:2;
$chars = Array ();
for ($i = 1; $i < $len-1; $i + +) {
$chars [] = $this->_isascii ($str [$i])? ' Yes ': ' No ';
}
$result = Array_count_values ($chars);
if (Empty ($result [' no ')]) {
return true;
}
return false;
}
/**
* Get the Pinyin first character of Chinese characters string
*
* @param string $str
* @return String
*/
Public Function getinitials ($STR)
{
if (empty ($STR)) return ';
if ($this->_isascii ($str [0]) && $this->_isasciis ($str)) {
return $str;
}
$result = Array ();
if ($this->_charset = = ' Utf-8 ') {
$str = Iconv (' utf-8 ', ' gb2312 ', $str);
}
$words = $this->_cutword ($STR);
foreach ($words as $word)
{
if ($this->_isascii ($word)) {/* Non-Chinese */
$result [] = $word;
Continue
}
$code = Ord (substr ($word, 0,1)) * + ord (substr ($word, 1, 1));
/* Get pinyin initials a--z*/
if ($i = $this->_search ($code))! =-1) {
$result [] = $this->_pinyins[$i];
}
}
Return Strtoupper (Implode (", $result));
}
Private Function _getchar ($ASCII)
{
if ($ascii >= && $ascii <= 57) {
return Chr ($ASCII); /* Number */
}elseif ($ascii >=65 && $ascii <=90) {
return Chr ($ASCII); /* a--z*/
}elseif ($ascii >=97 && $ascii <=122) {
Return Chr ($ascii-32); /* a--z*/
}else{
Return '-'; /* Other */
}
}
/**
* Find the phonetic characters (gb2312) corresponding to the required Chinese characters (binary method)
*
* @param int $code
* @return int
*/
Private Function _search ($code)
{
$data = Array_keys ($this->_pinyins);
$lower = 0;
$upper = sizeof ($data)-1;
$middle = (int) round (($lower + $upper)/2);
if ($code < $data [0]) return-1;
for (;;) {
if ($lower > $upper) {
return $data [$lower-1];
}
$tmp = (int) round (($lower + $upper)/2);
if (!isset ($data [$tmp])) {
return $data [$middle];
}else{
$middle = $tmp;
}
if ($data [$middle] < $code) {
$lower = (int) $middle + 1;
}else if ($data [$middle] = = $code) {
return $data [$middle];
}else{
$upper = (int) $middle-1;
}
}
}
}
?>
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