正则表达式以从该URL查找图像名称和扩展名

Question

I have this url which is generated automatically.

uploads/1/0/1/7/10178123/4320885_orig.png

I need to get the name and the extension of the image from this url which in this case is 4320885_orig.png

i am not being able to write a regex to find the name and extension.

Answer 1

I recommend you to check php's Basename function instead of using regex

echo basename("uploads/1/0/1/7/10178123/4320885_orig.png");

//result: 4320885_orig.png

Answer 2

不要使用正则表达式，使用pathinfo ...

echo pathinfo('uploads/1/0/1/7/10178123/4320885_orig.png', PATHINFO_BASENAME);

Answer 3

Try pathinfo() :

$path = 'uploads/1/0/1/7/10178123/4320885_orig.png';

echo pathinfo($path, PATHINFO_BASENAME); //png

You can get other components of the path as well:

$path_parts = pathinfo($path);

echo $path_parts['extension'], "\n"; //png
echo $path_parts['dirname'],   "\n"; //uploads/1/0/1/7/10178123
echo $path_parts['basename'],  "\n"; //4320885_orig.png
echo $path_parts['filename'],  "\n"; //4320885_orig

See the PHP documentation on pathinfo() for more information.