Hi, I'm new to PHP and I need help!!?

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General Iroh

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I'm trying to use array_diff() to find the entries that exist in the array "existing_directories" that SHOULDN'T exist according to the master array "sql_directories". The differences are selected by array_diff() and placed in another array called "alien_directories". However, array_diff() seems to utterly ignore the first three differences, leaving them as nulls, but works well after that. The data is entered below.

Existing Directories

existing_directory_array[0] = 11822_Me Being A Gamer
existing_directory_array[1] = 24015_My Cool Car
existing_directory_array[2] = 6313_New Locations
existing_directory_array[3] = Copy (2) of 24015_My Cool Car
existing_directory_array[4] = Copy (3) of 24015_My Cool Car
existing_directory_array[5] = Copy (4) of 24015_My Cool Car
existing_directory_array[6] = Copy (5) of 24015_My Cool Car
existing_directory_array[7] = Copy (8) of 24015_My Cool Car
existing_directory_array[8] = Copy (9) of 24015_My Cool Car
existing_directory_array[9] = Copy of 24015_My Cool Car

SQL Directories

sql_directory_array[0] = 24015_My Cool Car
sql_directory_array[1] = 11822_Simon Being A Gamer
sql_directory_array[2] = 6313_New Locations

Alien Directories

alien_array[0] =
alien_array[1] =
alien_array[2] =
alien_array[3] = Copy (2) of 24015_My Cool Car
alien_array[4] = Copy (3) of 24015_My Cool Car
alien_array[5] = Copy (4) of 24015_My Cool Car
alien_array[6] = Copy (5) of 24015_My Cool Car

Size of Alien Directories (7)

What am I doing wrong?
 
A piece of your code would be good, beacause I've tried using your arrays like this and it works:

array_diff($existing_directory_array, $sql_directory_array ) ;

gives this output:

array(8) {
[0]=>
string(22) "11822_Me Being A Gamer"
[3]=>
string(29) "Copy (2) of 24015_My Cool Car"
[4]=>
string(29) "Copy (3) of 24015_My Cool Car"
[5]=>
string(29) "Copy (4) of 24015_My Cool Car"
[6]=>
string(29) "Copy (5) of 24015_My Cool Car"
[7]=>
string(29) "Copy (8) of 24015_My Cool Car"
[8]=>
string(29) "Copy (9) of 24015_My Cool Car"
[9]=>
string(25) "Copy of 24015_My Cool Car"
}

which is exactly what you require.

I suggest you check your code for alterations of array contents before your array_diff statement.
 
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