Question

How to get number of image file name and image file name from php var ?

I have php var string like this

<p>aas sss ddd fff g gh ggg hhhh</p><p style="text-align: center; "><img src="threads_image/2rU4Va7c05b3f200c8cb893126fc7622b63f477ORZWM38.png" style="width: 240px;"></p><p style="text-align: left;"><img src="threads_image/2rU4V9cbdefa8e38d5457c8b1fc7ccb77c9dc30YQJUI9N.gif" style="width: 300px;"></p><p style="text-align: left;"><br></p><p style="text-align: left;"><img src="threads_image/2rU4V89e0e28ad1aab7c870d0df6380087ed378IGAN8BX.jpg" style="width: 794px;"><br></p>

So i want to get number of image file and image file name. how can i do that ?

I don't seen php function that can do that ?

Answer 1

（不是我）。

如果您不想使用正则表达式（或任何非标准PHP组件），使用内置DOMDocument类的合理解决方案如下：

<?php
    $doc = new DOMDocument();
    $doc->loadHTML('<img src="http://example.com/img/image.jpg" ... />');
    $imageTags = $doc->getElementsByTagName('img');

    foreach($imageTags as $tag) {
        echo $tag->getAttribute('src');
    }
?>

awnser的链接： Regex & PHP - isolate src attribute from img tag

Answer 2

您可以使用正则表达式查找图像名称。这个正则表达式应该没问题：src=\"threads_image\/([^"]+)。您可以像这样使用它：

preg_match_all('/<img src=\"threads_image\/([^"]+)/', $html , $matches);

$matches[1]现在是图片名称列表。

C:\Users\Thomas\Projects\stackoverflow\40615130\index.php:4:
array (size=2)
  0 => 
    array (size=3)
      0 => string '<img src="threads_image/2rU4Va7c05b3f200c8cb893126fc7622b63f477ORZWM38.png'     (length=74)
      1 => string '<img src="threads_image/2rU4V9cbdefa8e38d5457c8b1fc7ccb77c9dc30YQJUI9N.gif' (length=74)
      2 => string '<img src="threads_image/2rU4V89e0e28ad1aab7c870d0df6380087ed378IGAN8BX.jpg' (length=74)
  1 => 
    array (size=3)
      0 => string '2rU4Va7c05b3f200c8cb893126fc7622b63f477ORZWM38.png' (length=50)
      1 => string '2rU4V9cbdefa8e38d5457c8b1fc7ccb77c9dc30YQJUI9N.gif' (length=50)
      2 => string '2rU4V89e0e28ad1aab7c870d0df6380087ed378IGAN8BX.jpg' (length=50)

请注意，这仅适用于所有图片共享目录threads_image。

How to get number of image file name and image file name from php var?

2 个答案: