This is really annoying me now! PHP array from file PLEASE HELP!

[eits]

I'm trying to write the backend to a card game in PHP. However, I am at the moment stumped! All I need to do is check if a value is in an array and if it is, return true.

 

Here is my code so far:

function checkcard($newcard) {
$dealtcards = file("file.crd");
if (in_array($newcard, $dealtcards)) { return true; }
}

 

The file.crd is just a file with a new value on each line. e.g. 10S is 10 of spades.

 

Can somebody shed some light on this please?

 

 

[bobbinsbro]

i think the newline char on the end of each line in the file is causing the mis-match. file() does not cut the newline off the end of each line.

[F1Fan]

First, please put your code in the

tags. Second, are you getting any errors? What is this code doing? Also, the in_array() function returns true or false, so you could just return the in_array() function itself. Is that your whole function?

[eits]

OK. I'm not getting any errors. I should be able to pass 'AA' to the function and it'll check that file to see if 'AS' (or any given card) is already in the file and if it is, return a value (true / false) so that I can choose a different card otherwise two cards will be dealt.

 

I have chopped this function up at least ten times today so yea now that is all I have. If I print_r after the $dealtcards = file.... line I get: Array ( [0] => 3S [1] => 7H [2] => AD [3] => 10S [4] => 9D [5] => 10S [6] => 5D [7] => 9C [8] => 6S [9] => 3C )

 

Does that help?

[Maq]

I think bobbinsbro is right, you need to add this context parameter in the file function.  Try this:

 

function checkcard($newcard) {
$dealtcards = file("file.crd", FILE_IGNORE_NEW_LINES);
if (in_array($newcard, $dealtcards)) { return true; }
}

 

***Warning, I think FILE_IGNORE_NEW_LINES only work with PHP 5.0+.

[eits]

FILE_IGNORE_NEW_LINES didn't seem to work I copied and pasted that code and modified return true to echo "works". But no sign of that magical word. :-(

[bobbinsbro]

you could try explicitly trimming off the newlines:

function checkcard($newcard) {
$dealtcards = file("file.crd");
foreach ($dealtcards as $line){
      trim($line);
}
if (in_array($newcard, $dealtcards)) { return true; }
}

[wildteen88]

you could try explicitly trimming off the newlines:

function checkcard($newcard) {
$dealtcards = file("file.crd");
foreach ($dealtcards as $line){
      trim($line);
}
if (in_array($newcard, $dealtcards)) { return true; }
}

That wont work!

 

Use

function checkcard($newcard) {
$dealtcards = file("file.crd");
$dealtcards = array_map('trim', $dealtcards); // remove the new lines.
if (in_array($newcard, $dealtcards)) { return true; }
}

[DarkWater]

Or simply:

 

$dealtcards = file("file.crd", FILE_IGNORE_NEW_LINES);

 

=/

[wildteen88]

Or simply:

 

$dealtcards = file("file.crd", FILE_IGNORE_NEW_LINES);

 

=/

Already been suggested and didn't work

http://www.phpfreaks.com/forums/index.php/topic,225111.msg1037215.html#msg1037215

[DarkWater]

Or simply:

 

$dealtcards = file("file.crd", FILE_IGNORE_NEW_LINES);

 

=/

Already been suggested and didn't work

http://www.phpfreaks.com/forums/index.php/topic,225111.msg1037215.html#msg1037215

 

Ah, didn't see that.  It works on PHP5. @_@  array_map(), as wildteen suggested, is your best bet other than upgrading your PHP, which would be the best solution.