[RESOLVED] cycling through arrays

sssphp

I need to cycle through an array until I arrive at a file that exists on my system. My array looks like:

$array = array(
'file1.htm',
'file2.htm',
'file3.htm'
);

I'm using this statement to test the condition, where $filename is a particular file in the array:

if (!file_exists('/home/mysite.com/public_html/'.$array[array_search($filename, $array) + 1])) {
die("");
}

This tells the script to die if the file after the current $filename is not found. I'd like the script to cycle through the array, starting at $filename, until it finds a file on my system (should also start again at the beginning of the array if it reaches the end).

devinemke

$array = array(
'file1.htm',
'file2.htm',
'file3.htm'
);

foreach ($array as $value)
{
	if (file_exists('/home/mysite.com/public_html/' . $value)) {echo $value . ' found<br>';}
}

sssphp

Thanks, but it needs to start at $filename (a particular value in the array), cycle through til it finds a file that exists, then redirect to that file and exit.

I don't know enough about php to modify what you gave me.

devinemke

if you already know the name of the file you want ($filename?) then why bother looping through the array? perhaps i am still not understanding what you are trying to do.

sssphp

The purpose of the script is to find the file in the array that is next AFTER $filename. I can find that value using:

$array[array_search($filename, $array) + 1]

but I also want to test whether the found file exists on my system, and if not, to test the one after that, and so on, until it finds a file that exists.

The current statement I have is:

if (!file_exists('/home/mysite.com/public_html/'.$array[array_search($filename, $array) + 1])) {
die("");
}

This tells the script to die if the found file isn't on my system, but I want it to cycle through the array until it finds one that does exist. (I then redirect the user to that page.)

devinemke

$start = array_search($filename, $array);

foreach ($array as $key => $value)
{
	if ($key > $start)
	{
		if (file_exists('/home/mysite.com/public_html/' . $value))
		{
			header('location: http://www.sssphp.com/' . $value);
			exit();
		}
	}
}

sssphp

Thanks, that works great.