Posted By

multani on 06/08/08

Tagged

Versions (?)

Last Edited at 06/08/08 05:59am

Statistics

Viewed 967 times

Favorited by 0 user(s)

Related snippets

Cut a Long String to a moderate Display String in UTF-8 chracter

/ Published in: PHP

åœ¨UTF-8çš„ç·¨ç¢¼ä¸‹ç¸®æ¸›å—ä¸²ä¸¦é¿å…ä¸æ–‡å—ä¸²æœ€å¾Œä¸€å€‹å—è®Šäº‚ç¢¼

Highlighted TextExpand

//æ“·å–å—ä¸²å‰å¹¾å€‹å—ä¸¦é¿å…æˆªæŽ‰åŠå€‹ä¸æ–‡å—ï¼Œ$strlenè¦æ“·å–çš„å—ä¸²é•·åº¦(ä»¥è‹±æ–‡å—æ¯æ•¸è¨ˆç®—ï¼Œä¸æ–‡å—éœ€ç®—äºŒå€‹å—æ•¸)
//æ¤è™•ç›´æŽ¥å‚³å…¥å¾žè³‡æ–™åº«è®€å‡ºä¹‹UTF-8ç·¨ç¢¼å—ä¸²
function CuttingStr($str, $strlen) {
//æŠŠ' 'å…ˆè½‰æˆç©ºç™½
$str = str_replace(' ', ' ', $str);

$output_str_len = 0; //ç´¯è¨ˆè¦è¼¸å‡ºçš„æ“·å–å—ä¸²é•·åº¦
$output_str = ''; //è¦è¼¸å‡ºçš„æ“·å–å—ä¸²

//é€ä¸€è®€å‡ºåŽŸå§‹å—ä¸²æ¯ä¸€å€‹å—å…ƒ
for($i=0; $i<strlen($str);$i++){
//æ“·å–å—æ•¸å·²é”åˆ°è¦æ“·å–çš„å—ä¸²é•·åº¦ï¼Œè·³å‡ºå›žåœˆ
if($output_str_len >= $strlen){
break;
}

//å–å¾—ç›®å‰å—å…ƒçš„ASCIIç¢¼
$str_bit = ord(substr($str, $i, 1));

if($str_bit < 128) {
//ASCIIç¢¼å°æ–¼ 128 ç‚ºè‹±æ–‡æˆ–æ•¸å—å—ç¬¦
$output_str_len += 1; //ç´¯è¨ˆè¦è¼¸å‡ºçš„æ“·å–å—ä¸²é•·åº¦ï¼Œè‹±æ–‡å—æ¯ç®—ä¸€å€‹å—æ•¸
$output_str .= substr($str, $i, 1); //è¦è¼¸å‡ºçš„æ“·å–å—ä¸²

}elseif($str_bit > 191 && $str_bit < 224) {
//ç¬¬ä¸€å—ç¯€ç‚ºè½æ–¼192~223çš„utf8çš„ä¸æ–‡å—(è¡¨ç¤ºè©²ä¸æ–‡ç‚ºç”±2å€‹å—ç¯€æ‰€çµ„æˆutf8ä¸æ–‡å—)
$output_str_len += 2; //ç´¯è¨ˆè¦è¼¸å‡ºçš„æ“·å–å—ä¸²é•·åº¦ï¼Œä¸æ–‡å—éœ€ç®—äºŒå€‹å—æ•¸
$output_str .= substr($str, $i, 2); //è¦è¼¸å‡ºçš„æ“·å–å—ä¸²
$i++;

}elseif($str_bit > 223 && $str_bit < 240) {
//ç¬¬ä¸€å—ç¯€ç‚ºè½æ–¼223~239çš„utf8çš„ä¸æ–‡å—(è¡¨ç¤ºè©²ä¸æ–‡ç‚ºç”±3å€‹å—ç¯€æ‰€çµ„æˆçš„utf8ä¸æ–‡å—)
$output_str_len += 2; //ç´¯è¨ˆè¦è¼¸å‡ºçš„æ“·å–å—ä¸²é•·åº¦ï¼Œä¸æ–‡å—éœ€ç®—äºŒå€‹å—æ•¸
$output_str .= substr($str, $i, 3); //è¦è¼¸å‡ºçš„æ“·å–å—ä¸²
$i+=2;

}elseif($str_bit > 239 && $str_bit < 248) {
//ç¬¬ä¸€å—ç¯€ç‚ºè½æ–¼240~247çš„utf8çš„ä¸æ–‡å—(è¡¨ç¤ºè©²ä¸æ–‡ç‚ºç”±4å€‹å—ç¯€æ‰€çµ„æˆçš„utf8ä¸æ–‡å—)
$output_str_len += 2; //ç´¯è¨ˆè¦è¼¸å‡ºçš„æ“·å–å—ä¸²é•·åº¦ï¼Œä¸æ–‡å—éœ€ç®—äºŒå€‹å—æ•¸
$output_str .= substr($str, $i, 4); //è¦è¼¸å‡ºçš„æ“·å–å—ä¸²
$i+=3;
}
}

Report this snippet Tweet

Comments

Subscribe to comments

Comment:

You need to login to post a comment.