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<?php
//$str = "abcdef¡ôÖлªÈËÃñ¹²ºÍ¹ú";
//$str = "1234567890";
$str = "ÖлªÈËÃñ¹²ºÍ¹úabcÖлªÈËÃñ¹²ºÍ¹úÖлªÈËÃñ¹²ºÍ¹ú";
$str = cut_str($str, 18);
echo $str;
function cut_str($str, $len){
 if(strlen($str) <= $len) return $str;
 $n = 0;
 $tempstr = '';
 for($i = 0; $i < $len; $i++){
  if(ord(substr($str,$n,1)) > 224){
   $tempstr .= substr($str,$n,3);
   $n += 3;
   $i++;//°ÑÒ»¸öÖÐÎİ´Á½¸öÓ¢Îĵij¤¶È¼ÆËã 
  }elseif(ord(substr($str,$n,1)) > 192){
   $tempstr .= substr($str,$n,2);
   $n += 2;
   $i++;//°ÑÒ»¸öÖÐÎİ´Á½¸öÓ¢Îĵij¤¶È¼ÆËã 
  }else{
   $tempstr .= substr($str,$n,1);
   $n++; 
  }
 }
 return  $tempstr."...";
 //ÔÚPHPÖУ¬ÓÃsubstr()º¯Êý½ØÈ¡´øÓÐÖÐÎÄ×Ö·û´®µÄ»°£¬¿ÉÄÜ»á³öÏÖÂÒÂ룬ÕâÊÇÒòΪÖÐÎ÷ÎÄÒ»¸ö×ÖËùÕ¼ÓеÄ×Ö½ÚÊý²»Ò»Ñù£¬¶øsubstrµÄ³¤¶ÈÊǰ´ÕÕ×Ö½ÚÈ¥ËãµÄ£¬ÔÚGB2312±àÂëʱ£¬Ò»¸öÖÐÎÄÕ¼2¸ö×Ö½Ú£¬Ó¢ÎÄΪ1¸ö×Ö½Ú£¬¶øÔÚUTF-8±àÂëµ±ÖУ¬Ò»¸öÖÐÎÄ¿ÉÄÜÕ¼ÓÐ2¸ö»ò3¸ö×Ö½Ú£¬Ó¢ÎÄ»ò°ë½Ç±êµãÕ¼1¸ö×Ö½Ú¡£
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 //µÚÒ»¸ö×Ö½Ú´óÓÚ224µÄ£¬ËüÓëËüÖ®ºóµÄ2¸ö×Ö½ÚÒ»Æð×é³ÉÒ»¸öUTF-8×Ö·û¡£
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php ajax debug method make log in a text file

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//
ob_start();
echo "<pre>";
print_r($data);
echo "</pre>";
$a=ob_get_contents();
//DAL::remove("insert into mytest(vvv) values('$a')");
$filename = "file.txt";
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$data = $key1."=".val1."&".$key2."=".val2;
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