ä¸ãfor循ç¯
ããããæç®åä¹æ¯æç´æ¥çæ¹æ³ï¼ç¨for循ç¯æ¥éåæ°ç»ã对äºå·²ç¥ç»´æ°çæ°ç»å¯ä»¥å¤æï¼ä½å¦ææ¯æªç¥çå¤ç»´æ°ç»ï¼è¯¥æä¹åï¼
äºãimplode();
ããããç¨implode()å°æ°ç»è¾åºä¸ºå符串ï¼å¤æè¾åºçå串æ¯å¦ä¸ºç©ºãåçä¸å»ä¼¼ä¹æ¯ä¸ªä¸éçæ¹æ³ï¼å¯æè·ä¸ä¸ç¹ä¸æ ·ï¼å¯¹äºäºç»´ä»¥ä¸æ°ç»å°±ä¸è¡äºã举个ä¾åï¼
$arr= array(array(),array(),array());
$str = implode(',',$arr);
if(empty($str)) echo "空";
else echo "é空";
å¾ææ¾$arræ¯ä¸ªå«æä¸ä¸ªç©ºæ°ç»çäºç»´æ°ç»ï¼åºè¯¥ä¹ç®æ¯ç©ºçï¼å¯æ¯è¾åºçç¡®æ¯é空ãå¤æ失败ã
ä¸ãcount();
ããããä¸å¾ä¸æ¿è®¤ï¼ææå
æ³å°çä¹æ¯è¿ä¸ªå½æ°ï¼ç½ä¸ä¹æ好å¤ç½åæè¿ä¸ªå½çæ¡ï¼å¹¶ä»¥ä¸ºå·²ç»è§£å³é®é¢ãå¯æ¯è¯·çä¸é¢çä¾åï¼
$arr= array("","","");
echo count($arr);
åãin_array('', $arr));
ããããä¸å¤è¯´ï¼è¿æ¯çä¾åï¼
$arr= array("d","s","");
echo in_array('', $arr);
è¿ä¸ªåªè½è¯´ææ°ç»ä¸æ空çå
ç´ ï¼ä¸è½è¯ææ°ç»æ¯ç©ºçãå¾ææ¾ä¹ä¸è¡
äºãempty();
ããããè¿ä¸ªcpyehè§å¾è·åé¢å ç§æ¹æ³å·®ä¸å¤
$arr= array("","","");
if(empty($arr)) echo "空";
else echo "é空";
ç»æè¿æ¯é空
å¯ä»¥å¨ä»¥ä¸ä¾åä¸å ä¸å¥print_r($arr);çç...
ããåºæ¬ä¸cpyehè½æ³å°çå ä¸ç½ä¸æ¾å°çä¹å°±ä»¥ä¸è¿äºï¼ä¸æç½çæ¯ç½ä¸å±
ç¶æ人ä¼æå°is_array()ï¼å¯è½æ¯å¯¹phpè¿ä¸æ¯å¾äºè§£ï¼éè¦å¤ç¿»ç¿»æåãå¾éæ¾æç»è¿æ¯æ¾ä¸å°ä¸ä¸ªå®ç¾ç解å³æ¹æ³ï¼ä¸è¿å¯¹äºä¸è¬çåºç¨ï¼ç¬¬ä¸ç§æ第äºç§åºè¯¥å¯ä»¥æ»¡è¶³äºï¼cpyehéäºæ¹ä¾¿ç第äºç§ãå¦æ对以ä¸ä¾åæçé®æ¬¢è¿çè¨å¨æ¤äºç¸äº¤æµã
å计ï¼
å¦æå¤æä¸ä¸ªäºç»´æ°ç»å¯ä»¥è¿æ ·ï¼åæ¶å¹²æé£äºç©ºçï¼
$this->dataObj->getTotalScore(&$resultinfo,$uids);
$judge = implode("",$resultinfo);
if(!empty($judge))//æ°ç»ä¸ä¸ºç©º
{ //å»ææ°ç»é®å¼ä¸ºç©º
foreach($resultinfo as $key =>$getoutvisnull)
{
if(empty($getoutvisnull))
{
unset($resultinfo[$key]);
}
}
$allscorearray[] = $resultinfo;
}
温馨提示:答案为网友推荐,仅供参考