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<?php
$str = '<p>圖1<img src="/public/upload/ueditor/image/20170626/1234567890.png" title="1234567890.png" alt="QQ圖片1234567890.png"></p><p>圖1<img src="/public/upload/ueditor/image/20170626/0987654321.png" title="0987654321.png" alt="QQ圖片0987654321.png"></p>';

if (preg_match_all('/src="(.+?)"/', $str, $matches)) {
    print_r($matches);
} else {
    echo '沒有匹配';
}

輸出:

(
    [0] => Array
        (
            [0] => src="/public/upload/ueditor/image/20170626/1234567890.png"
            [1] => src="/public/upload/ueditor/image/20170626/0987654321.png"
        )

    [1] => Array
        (
            [0] => /public/upload/ueditor/image/20170626/1234567890.png
            [1] => /public/upload/ueditor/image/20170626/0987654321.png
        )

)

有興趣歡迎看我的正規(guī)表示式入門講堂: 一個小時學(xué)會使用正規(guī)表示式

正規(guī)表示式比較方便

正則匹配下，然後要取的那塊用()當(dāng)子集取出來就可以了

雷雷

<?php
define('CLI_SCRIPT', true);

$tt = '<p><img class="icon" alt="141220154.zip" title="141220154.zip" src="http://11111/theme/image.php/ gourmet/core/1491882323/f/archive" /> </p><p><img class="icon" alt="141220154.zip" title="141220154.zip" src="http://3333/theme/image.php/gourmet/core/         1491882323/f/archive" /></p>';

preg_match_all('/<img [^>]*src=\"(.+?)\"/', $tt, $matches);                                                                                                                 
var_dump($matches);    // 需要的字符串在$matches[1]中，具體信息可以打印了看

參考link: http://php.net/manual/zh/func...