[PHP] newbie Q: How to say, "if the fileNAME is equal to...", or better yet, "if the fileNAME ends with '.jpg'"?

[Govinda]

Hi all :-)
It'll be fun to work here with you guys over the coming months.  I  
have been out of the coding loop for 7 years, and I am totally new to  
PHP, but I should catch up not-too-slowly as I used to code HTML,  
WebDNA, and a little Visual Basic too.  Kindly bear with me.

First Q:
This code does list the files in my dir just fine:

$ThisDir = getcwd()."/thumbs";
$DirHandle = opendir($ThisDir);
if ($DirHandle = opendir($ThisDir)) {
   echo "Directory handle: $DirHandle\n";
   echo "Files:<br /><hr width=\"25\%\" align=\"left\" />";

while ((false !== ($file = readdir($DirHandle))) & 1) {
                echo "$file<br />";
    }
    closedir($DirHandle);
}

But two of those entries are apparently named "." and "..".
Feel free to enlighten me on that, but, always trying to be self- 
sufficient, I attempt to workaround by wrapping this line:
echo "$file<br />";
with  an if statement that I want to only show the file if it ends  
with the extension ".jpg".  I haven't yet found the 'string.ends_with'  
function in the docs, so I am just seeing if I can (to learn step by  
step) instead  wrap that echo line with an if statement that says "if  
the name of the file is equal to (xxxx.jpg)", like so:

$ThisDir = getcwd()."/thumbs";
$DirHandle = opendir($ThisDir);
if ($DirHandle = opendir($ThisDir)) {
   echo "Directory handle: $DirHandle\n";
   echo "Files:<br /><hr width=\"25\%\" align=\"left\" />";

while ((false !== ($file = readdir($DirHandle))) & 1) {
        if (true == ($file="xxxx.jpg")) {
                echo "$file<br />";
                }
    }
    closedir($DirHandle);
}

But instead of printing only the name of the file which is equal to  
"xxxx.jpg", it seems to actually set the value of $file to "xxxx.jpg"  
on each iteration of the while loop, so what I get is a list of files  
all having the same name ("xxxx.jpg") and their number is equal to the  
actual number of files in that dir (plus 2 - for the "." and ".."  
files).

How to say, "if the fileNAME is equal to...", or better yet, "if the  
fileNAME ends with '.jpg'"?

Thanks,
-Govinda

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