how to compare elements of 2 arrays?

[jamesbond]

I have 2 arrays :
-------------------------------------
$domains = array("strawberries.com","bananas.com","apples.com");

// add selected item to array2
if ($add) { $selected_domains[]=$add; }
-------------------------------------
How can I iterate through array1 and compare each element in array1 to each element in array2 without messing up the list order that is being displayed?

What I have working so far is comparing array1 to the last added element of array2, but I would like to compare array1 to each element of array2 meaning that if a domain has been added that the "delete" link should be displayed and if the domain has not been added the "add" link should be displayed.

I tried several things but I can't get it to work properly.

--------------------------------------
<?php

session_start();

// domain variables

$domains = array("strawberries.com","bananas.com","apples.com");


// add selected item to array

if ($add) { $selected_domains[]=$add;

}

// delete selected item from array

if ($delete) {

$d=($i-1);

array_splice($selected_domains,$d,1);
}


// register selected_domains

session_register("selected_domains");

$i=0;

foreach ($domains as $domainlist) {

$i++;

if ($domainlist==$add) { echo"<A HREF=$PHP_SELF?delete=$i>Delete $domainlist from list</A><br>";}

else {
echo"<A HREF=$PHP_SELF?add=$domainlist>Add $domainlist to list</A><br>";
}

}
---------------------------------------

[drisley]

Check out the in_array() function. You can use that to test if $add is in the array, and if it is go to the delete function, if it isn't add it. I think that'll be easier, if I'm understanding what you have in mind correctly.

[jamesbond]

Thanks!

in_array is exactly what I need, however I keep getting the following error :

Wrong datatype for first argument in call to in_array() in ..

Below is a little example, I just can't figure out what is wrong with it...

<?

// Define arrays

$domains = array ("strawberries.com","bananas.com","apples.com");
$selected_domains = array ("strawberries.com,bananas.com");

foreach ($domains as $domainlist) {


if (in_array ($selected_domains, $domainlist)) {

echo"<A HREF=$PHP_SELF?delete=$domainlist>Delete $domainlist from list</A><br>";
}

else {
echo"<A HREF=$PHP_SELF?add=$domainlist>Add $domainlist to list</A><br>";
}

}

?>

[7stud]

Hi,

rtfm at:

http://www.php.net/manual/en/function.in-array.php

and you will see that this is the format:

in_array ($domainlist, $selected_domains)