如何提取 URL 中斜杠之间的特定值？

Question

我正在处理包含图片的 *.xml 文件。

<pictures>https://images.example.co.uk/products/1835/1835776/large2/29203852.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203856.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203863.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203880.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203859.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203853.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203858.jpg|https://images.example.co.uk/products/1835/1835776/large2/29074560.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203854.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203860.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203876.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203862.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203877.jpg|https://images.example.co.uk/products/1835/1835776/large2/29074561.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203871.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203873.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203865.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203874.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203866.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203872.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203868.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203867.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203870.jpg|https://images.example.co.uk/products/1835/1835776/large2/29074558.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203879.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203864.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203878.jpg|https://images.example.co.uk/products/1835/1835776/large2/29203881.jpg</pictures>

我需要从第一张图片 URL https://images.example.co.uk/products/1835/1835776/large2/29203852.jpg 中提取 产品 ID，在本例中为 1835776.

问题:

考虑到图像中用 / 分隔的某些元素 / 对于每个产品 (XXXXX) 不同，实现此目的的正确正则表达式是什么？

https://images.example.co.uk/products/XXXXX/[I-WANT-THIS-ELEMENT]/large2/XXXXXXXX.jpg

Answer 1

假定 URL 将始终采用相同的格式：

$url = "https://images.example.co.uk/products/XXXXX/[I-WANT-THIS-ELEMENT]/large2/XXXXXXXX.jpg";
$url = explode('/',$url);
$id = $url[5];
echo $id;

如何提取 URL 中斜杠之间的特定值？

How to extract specific value between slashes in a URL?

php

regex

preg-match