Array Search

[DoctorToxn]

Hi again.

I need help.  I am srting to search an array with the Search_Array function.  I have a flat file that I import into an array with the File function.  I can open the file into an array just fine.  But, when I try to search the array,  it comes up blank.

Here is the Flat File (usernames.data.php):

Code Select Expand

admin
carlo


Here is the code:

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<?php

// Open the file into an array
$lines = file("usernames.data.php");
print_r($lines);
echo "<BR><BR>";

// search array for string
$key = array_search('admin', $lines);
 
print_r($key);

?>

The first Print_R works fine and echos the array as follows:

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Array ( [0] => admin [1] => carlo )
But the second print r finds nothing.  I need an anwser.

Thanks
BuilderDan

[Thantos]

its blank because its returning a value of 0.  print_r won't help you as it returns the key and not an array.  Try this:

$key = array_search('admin', $lines);
if ( $key === false )
  echo 'Not found';
else
  echo "$key";

[DoctorToxn]

Ok, but why is it not returining the array line?  Even tough it is in the array?

BuilderDan

[Thantos]

because array_search returns the key not the value. http://www.php.net/manual/en/function.array-search.php

If you want the value you can then do:
$lines[$key]

[DoctorToxn]

But I am wanting it to return the key.  And as you say it is returing "0", why is it not echoing "0"? 

I am sry if i am being a pain.  I am just wanting to learn this stuff.

[Thantos]

print_r won't print an integer 0 it assumes it means empty.  The value is really 0 so you just have to deal with it.