{"id":528,"date":"2010-10-04T16:35:39","date_gmt":"2010-10-04T16:35:39","guid":{"rendered":""},"modified":"2010-10-04T16:35:39","modified_gmt":"2010-10-04T16:35:39","slug":"528","status":"publish","type":"post","link":"https:\/\/www.poloo.org\/?p=528","title":{"rendered":"php\u622a\u53d6\u5b57\u7b26\u4e32\uff0c\u907f\u514d\u4e71\u7801"},"content":{"rendered":"

1. \u622a\u53d6GB2312\u4e2d\u6587\u5b57\u7b26\u4e32

<?php
\/\/\u622a\u53d6\u4e2d\u6587\u5b57\u7b26\u4e32  
function mysubstr($str, $start, $len) {  
$tmpstr = \"\";  
$strlen = $start + $len;  
for($i = 0; $i < $strlen; $i++) {  
if(ord(substr($str, $i, 1)) > 0xa0) {  
$tmpstr .= substr($str, $i, 2);  
$i++;  
} else  
$tmpstr .= substr($str, $i, 1);  
}  
return $tmpstr;  
}  
?>  
<\/code><\/p>\n

2. \u622a\u53d6utf8\u7f16\u7801\u7684\u591a\u5b57\u8282\u5b57\u7b26\u4e32  <\/p>\n

  
<?php  
\/\/\u622a\u53d6utf8\u5b57\u7b26\u4e32  
function utf8Substr($str, $from, $len)  
{  
return preg_replace('#^(?:[x00-x7F]|[xC0-xFF][x80-xBF]+){0,'.$from.'}'.  
'((?:[x00-x7F]|[xC0-xFF][x80-xBF]+){0,'.$len.'}).*#s',  
'$1',$str);  
}  
?>  
<\/code><\/p>\n

3. UTF-8\u3001GB2312\u90fd\u652f\u6301\u7684\u6c49\u5b57\u622a\u53d6\u51fd\u6570  

<?php  
function cut_str($string, $sublen, $start = 0, $code = 'UTF-8')  
{  
if($code == 'UTF-8')  
{  
$pa = \"\/[x01-x7f]|[xc2-xdf][x80-xbf]|xe0[xa0-xbf][x80-xbf]|[xe1-xef][x80-xbf][x80-xbf]|xf0[x90-xbf][x80-xbf][x80-xbf]|[xf1-xf7][x80-xbf][x80-xbf][x80-xbf]\/\";  
preg_match_all($pa, $string, $t_string);  
  
if(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen)).\"...\";  
return join('', array_slice($t_string[0], $start, $sublen));  
}  
else  
{  
$start = $start*2;  
$sublen = $sublen*2;  
$strlen = strlen($string);  
$tmpstr = '';  
  
for($i=0; $i<$strlen; $i++)  
{  
if($i>=$start && $i<($start+$sublen))  
{  
if(ord(substr($string, $i, 1))>129)  
{  
$tmpstr.= substr($string, $i, 2);  
}  
else  
{  
$tmpstr.= substr($string, $i, 1);  
}  
}  
if(ord(substr($string, $i, 1))>129) $i++;  
}  
if(strlen($tmpstr)<$strlen ) $tmpstr.= \"...\";  
return $tmpstr;  
}  
}  
  
$str = \"abcd\u9700\u8981\u622a\u53d6\u7684\u5b57\u7b26\u4e32\";  
echo cut_str($str, 8, 0, 'gb2312');  
?>  
<\/code><\/p>\n

4. BugFree \u7684\u5b57\u7b26\u622a\u53d6\u51fd\u6570  

<?php  
  
function sysSubStr($String,$Length,$Append = false)  
{  
if (strlen($String) <= $Length )  
{  
return $String;  
}  
else  
{  
$I = 0;  
while ($I < $Length)  
{  
$StringTMP = substr($String,$I,1);  
if ( ord($StringTMP) >=224 )  
{  
$StringTMP = substr($String,$I,3);  
$I = $I + 3;  
}  
elseif( ord($StringTMP) >=192 )  
{  
$StringTMP = substr($String,$I,2);  
$I = $I + 2;  
}  
else  
{  
$I = $I + 1;  
}  
$StringLast[] = $StringTMP;  
}  
$StringLast = implode(\"\",$StringLast);  
if($Append)  
{  
$StringLast .= \"...\";  
}  
return $StringLast;  
}  
}  
  
$String = \"CodeBit.cn -- \u7b80\u5355\u3001\u7cbe\u5f69\u3001\u901a\u7528\";  
$Length = \"18\";  
$Append = false;  
echo sysSubStr($String,$Length,$Append);  
?>
<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

1. \u622a\u53d6GB2312\u4e2d\u6587\u5b57\u7b26\u4e32 <?php\/\/\u622a\u53d6\u4e2d\u6587\u5b57\u7b26\u4e32...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-528","post","type-post","status-publish","format-standard","hentry","category-Php"],"_links":{"self":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/528","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=528"}],"version-history":[{"count":0,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/528\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}