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php实现修改新闻时删除图片的方法

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Release: 2016-06-06 20:04:28
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这篇文章主要介绍了php实现修改新闻时删除图片的方法,涉及php正则替换的相关技巧,需要的朋友可以参考下

本文实例讲述了php实现修改新闻时删除图片的方法。分享给大家供大家参考。具体实现方法如下:

//old_contents:待修改的公告内容; //$content:修改后的公告内容 $oldPic=array(); $nowPic=array(); preg_match_all("/\php实现修改新闻时删除图片的方法/",$old_contents,$match); if(!empty($match[2])){ foreach($match[2] as $key=>$value){ array_push($oldPic,basename($value)); } } preg_match_all("/\php实现修改新闻时删除图片的方法/",$content,$testpic); if(!empty($testpic[2])){ foreach($testpic[2] as $key=>$value){ array_push($nowPic,basename($value)); } } $intersectPic=array_intersect($nowPic,$oldPic);//计算交集 foreach($oldPic as $key=>$value){ if(!in_array($value,$intersectPic)){ $delPic="图片路径".$value unlink($delPic); } }

希望本文所述对大家的php程序设计有所帮助。

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