For Each Array Compare

[ndorfnz]

Ok, here's the deal...

I have an array that stores a file name...say ARRAY_MAIN

I have another array that stores a file name...say ARRAY_SUB

I want to perform an action when a value in ARRAY_MAIN matches a value in ARRAY_SUB.

Appreciate any direction on getting started!! 😉 Is For Each correct to use? Dabbled with it, but can't quite grasp it for this...

[laserlight]

I'm not sure what you are asking for, but you might find [man]array_intersect/man useful.

[Drakla]

If I get what you mean then you could run [man]array_intersect[/man] with the arrays as arguments, the resulting array would be one that has the matching elements from both arrays. Then you could foreach through the result array and take whatever actions you need.

[ndorfnz]

Sorry I probably wasn't as clear...I did end up getting this to work by the following:

//*************************************************************************************
//Make server and database connections
//*************************************************************************************
$con = mysql_connect("$server",$userid,$pass)
		or die ("Connection Error to Server");
$db = mysql_select_db("$database",$con)
		or die("Connection Error to Database");

//local path containing ALL THE RACE PHOTOS ON THE HARD DRIVE!!!
$s = "c:\\phpdev\\www\allraces2";

if (!$s)
{
    echo "Error: Must specify a directory to view as readDir.php?s=somedir"; exit;
}
else
{
}

//DIM THE LOCAL FILES PATH ARRAY
$localPics = Array();

//OPEN UP THE allraces DIRECTORY
$handle=opendir($s);

//LOAD THE LOCAL FILE PATH ARRAY UNTIL ALL FILES ARE READ
 while (($file = readdir($handle))!==false)
 {
     if ($file)
     {

 //LOWERCASE THE FILES, SOME .JPG AND SOME .jpg
 $file2 = strtolower($file);

 //LOAD ARRAY
 $localPics[] = "$file2"."";
 }
 }

//PHOTOS IN LIVE USE, FILES NAMES STORED INTO MYSQL TABLE
$query = "SELECT photoid from photoids2";
$result = mysql_query($query);
$liverows = mysql_num_rows($result);


//DIM THE ARRAY FOR MYSQL TABLE, THIS TABLES STORES ALL THE PICS THAT ARE LIVE ON THE WEB
$livePics = Array();

//FILL THE ARRAY WITH RESULTS FROM THE MYSQL TABLE

while ($row = mysql_fetch_array($result))
{
    $livePics[] = $row[photoid];
}

//get the count of the pics in the localArray
$localRow = count($localPics);


//SET UP THE OUTER LOOP USING THE LIVE PICS AS THE MAIN COUNTER
for($i=0; $i<$liverows; $i++)

 {
    //SET UP THE INNER LOOP USING THE LOCAL PICS TO CHECK
    for ($l=0; $l<$localRow; $l++)
    {
         if ($livePics[$i] == $localPics[$l])
        {
//IF A LIVEPIC MATCHES A LOCAL PIC THEN COPY IT
            echo 'copy ' . $localPics[$l] . '<br>';
        }
        else
        {
            //echo 'no copy' . $livePics[$i];
        }
    }

 }

May not be the right way, but at least it works!!

I have to make sure that I have checked every single livePic against every possible localPic, if a match is found, do something.