chr(PHP4,PHP5,PHP7)chr—返回特定字符chr—返回指定字符Descriptionstringchr(int$ascii)//返回一个单字符字符串，包含thecharacterspecifiedbyascii.//返回指定的ascii对应的单个字符。//Thisfunctioncomplementsord().//Thisfunctioncomplementsord().参数ascii扩展的ASCII码。Ascii码。超出有效范围（0..255）的值将按位与'255'运算，相当于下面的算法：while($ascii<0){$ascii+=256;}$ascii%=256;返回值返回指定的字符。返回指定的字符。示例>6));$utf.=chr(0x80+($dec&0x3f));}elseif($dec<0x010000){$utf=chr(0xE0+($dec>>12));$utf.=chr(0x80+(($dec>>6)&0x3f));$utf.=chr(0x80+($dec&0x3f));}elseif($dec<0x200000){$utf=chr(0xF0+($dec>>18));$utf.=chr(0x80+(($dec>>12)&0x3f));$utf.=chr(0x80+(($dec>>6)&0x3f));$utf.=chr(0x80+($dec&0x3f));}else{die("UTF-8字符大小超过4个字节");}返回$utf;}functionunichr3($u){returnmb_convert_encoding('&#'.intval($u).';','UTF-8','HTML-ENTITIES');}echounichr(0x263A).PHP_EOL;//?echounichr2(0x263A)。PHP_EOL;//?echounichr3(0x263A)。PHP_EOL;//?echounichr(0x263B)。PHP_EOL;//?echounichr2(0x263B).PHP_EOL;//?echounichr(20013).PHP_EOL;//中echounichr2(20013).PHP_EOL;//中echounichr3(20013).PHP_EOL;//中见http://php.net/manual/en/func...版权所有
