[Add to favorites] php generates the first pinyin category for Chinese characters

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<? Php /** * Tool for the first letter of Chinese character and Pinyin * Note: The English string does not change and returns (including numbers) eg. abc123 => abc123 * Chinese character string: return the first character of pinyin, for example, Hunan => HN * Chinese-English mixed string: return the first character of the Chinese alphabet and the English eg. I j => WIWJ * Eg. * $ Py = new str2PY (); *  * $ Result = $ py-> getInitials ('Jay Chou '); * * // Obtain the first letter * $ Result = $ py-> getFirstString ('ABC'); // * $ Resutl = $ py-> getFirstString ("Yunqi community"); // y * */ Class str2py { Private $ _ pinyins = array ( => 'A ', => 'B ', => 'C ', => 'D ', => 'E ', => 'F ', => 'G ', => 'H ', => 'J ', => 'K ', => 'L ', =>'M ', => 'N ', => 'O ', => 'P ', => 'Q ', => 'R ', =>'S ', => 'T ', => 'W ', => 'X ', => 'Y ', => 'Z ', ); Private $ _ charset = null; /** * Constructor, specifying the required encoding default: UTF-8 * UTF-8 and gb2312 supported      * * @ Param unknown_type $ charset */ Public function _ construct ($ charset = 'utf-8 ')     { $ This-> _ charset = $ charset;     } /** * Chinese character 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;     } /** * The string is partitioned into arrays (Chinese characters or characters in 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 the 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 three 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;     } /** * Obtain the first character of a Chinese string in Chinese.      * * @ 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) * 1000 + ord (substr ($ word, 1, 1 )); /* Get the A--Z of the first letter of pinyin */ If ($ I = $ this-> _ search ($ code ))! =-1)             { $ Result [] = $ this-> _ pinyins [$ I];             }         } Return strtoupper (implode ('', $ result ));     } /** * 20140624 get the first letter of wangtianbao * @ Param string $ str * @ Return string */ Public function getFirstString ($ str)     { // Convert Chinese characters into letters first $ New_string = $ this-> getInitials ($ str ); If (empty ($ new_string ))         { Return '';         } Else         { Return strtoupper (substr ($ new_string, 0, 1 ));         }     } Private function _ getChar ($ ascii)     { If ($ ascii >=48 & $ ascii <= 57)         { Return chr ($ ascii);/* number */         } Elseif ($ ascii >=65 & $ ascii <= 90)         { Return chr ($ ascii);/X A--Z */         } Elseif ($ ascii >=97 & $ ascii <= 122)         { Return chr ($ ascii-32);/* a -- z */         } Else         { Return '-';/* other */         }     } /** * Search for the expected Chinese character inner code (gb2312) corresponding to the Pinyin character (bipartite)      * * @ 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;             }         }     } }

If you are interested and have an idea of deep learning, you can change it to generate full pinyin.