PHP matches the remote image address in the article and downloads the image locally-PHP Tutorial-php.cn

PHP matches the remote image address in the article and downloads the image locally

高洛峰

Release： 2016-11-29 10:26:10

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Today I am doing a simple collection program that requires downloading the content of the other party's website, and then saving the pictures in the content on the local server. Now I will introduce to you my specific operation method. Downloading pictures mainly uses the file_get_contents function. Specifically Methods as below.

Here we use PHP regular expressions to achieve

$content = &#39;这里是文章内容，这里插入一张图片测试 <img src="http://www.php.cn/imgupload/201509/0904011721db04fb16_75_0.jpg">&#39;;
$content = stripslashes ( $content );
$img_array = array ();
// 匹配所有远程图片
preg_match_all ( "/(src|SRC)=["|&#39;| ]{0,}(http://(.*).(gif|jpg|jpeg|bmp|png))/isU", $content, $img_array );
// 匹配出来的不重复图片
$img_array = array_unique ( $img_array [2] );
print_r($img_array);

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The remote image is matched above, and we need to keep it locally. Two points need to be noted here:

1. Picture saving path (picture storage directory)

2. Actual access to the picture address

The following is a complete example: (You can save it to the local server and modify the corresponding place for testing)





php保存远程图片到本地，php正则匹配文章中的图片地址


 $value ) {
 $value = trim ( $value );
 // 读取远程图片
 $get_file = @file_get_contents ( $value );
 // 保存到本地图片名称
 $imgname = date ( "YmdHis" ) . '_' . rand ( 10000, 99999 ) . "." . substr ( $value, - 3, 3 );
 // 保存到本地的实际文件地址（包含路径和名称）
 $fileName = $imgPath . '/' . $imgname;
 // 实际访问的地址
 $fileurl = $imgUrl . "/" . $imgname;
 // 文件写入
 if ($get_file) {
  $fp = @fopen ( $fileName, "w" );
  @fwrite ( $fp, $get_file );
  @fclose ( $fp );
 }
 // 替换原来的图片地址
 $content = ereg_replace ( $value, $fileurl, $content );
}
echo $content;
?>

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