循环逻辑不能影响每个元素

Question

thanks in advance for helping, and looking.

I have a bunch of images whose paths and metadata I need to process in a web directory: e.g. 'path/to/files/u_1.jpg'

$list=array_values($list);
foreach ($list as &$value)
   list($width, $height) = getimagesize($dir.$udir.$value);
   $value = $predir.$udir.$value.$wid.$width.$hgt.$height.$lft.$end;

I used scandir to get the elements into the $list array correctly.
The rest of variables, are basically creating the img tags in an html page.

However, what I get is only the last element done correctly, the rest do not come out of the loop:

Array
(
[0] => u_1.jpg
...
[16] => u_8.jpg
[17] => img src="/images/photo/up/u_9.jpg" style="display: none; width: 1526px; height: 1080px; left: 0px; top: px; ">
)

But the metadata is correctly found (image height and width for that image).

What I need is to get every line to look like the last. I have searched but I think this may be a fundamental logic issue. Is there a way to pass the info to another holding array, or something along those lines?

Answer 1

Without {} foreach will consider on the next line to it. So only for the last element the values are set. Put {}s so that the foreach know what to process. Try with -

foreach ($list as &$value) {
   list($width, $height) = getimagesize($dir.$udir.$value);
   $value = $predir.$udir.$value.$wid.$width.$hgt.$height.$lft.$end;
}