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I can't figure out what's wrong with this. The program works, but the deduplication doesn't work. The error I get is : Warning: in_array() [function.in-array]: Wrong datatype for second argument in line 67. I bolded line 67 below, which is an if (in_array ) statement. in_array wants an array for the second argument, which I have, so don't see the problem. Any suggestions? TIA ---------------------------------------------------------------------- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Song Organizer</title> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" /> </head> <body> <h1>Song Organizer</h1> <?php // handle parameters in the URL if (isset($_GET['action'])) { if ((file_exists("SongOrganizer/songs.txt")) && (filesize("SongOrganizer/songs.txt") != 0)) { $SongArray = file("SongOrganizer/songs.txt"); // menu for Deduplication, Sort, Shuffle switch ($_GET['action']) { case 'Remove Duplicates': $SongArray = array_unique($SongArray); $SongArray = array_values($SongArray); break; case 'Sort Ascending': sort($SongArray); break; case 'Shuffle': shuffle($SongArray); break; } // end of switch statement // save the song list after it has been modified if (count($SongArray) > 0) { $NewSongs = implode($SongArray); $SongStore = fopen("SongOrganizer/songs.txt", "wb"); if ($SongStore === false) echo "There was an error updating the song file\n"; else { fwrite($SongStore, $NewSongs); fclose($SongStore); } } else unlink("SongOrganizer/songs.txt"); } } // read song file data into the $ExistingSongs array if (isset($_POST['submit'])) { $SongToAdd = stripslashes($_POST['SongName']) . "\n"; $ExistingSongs = array(); if (file_exists("SongOrganizer/songs.txt") && filesize("SongOrganizer/songs.txt") > 0) { $ExistingSongs = file("SongOrganizer/songs.txt"); } } // check to see if the song name entered is already in the song list // this is where it has a problem. if (in_array($SongToAdd, $ExistingSongs)) { echo "<p>The song you entered already exists!<br />\n"; echo "Your song was not added to the list.</p>"; } // add new song to the list file else { $SongFile = fopen("SongOrganizer/songs.txt", "ab"); if ($SongFile === false) echo "There was an error saving your message!\n"; else { fwrite($SongFile, $SongToAdd); fclose($SongFile); echo "Your song has been added to the list.\n"; } } // display the song list, or empty message if song list is empty if ((!file_exists("SongOrganizer/songs.txt")) || (filesize("SongOrganizer/songs.txt") == 0)) echo "<p>There are no songs in the list.</p>\n"; else { $SongArray = file("SongOrganizer/songs.txt"); echo "<table border=\"1\" width=\"100%\" style=\"background-color:lightgray\">\n"; foreach ($SongArray as $Song) { echo "<tr>\n"; echo "<td>" . htmlentities($Song) . "</td>"; echo "</tr>\n"; } echo "</table>"; } ?> <!-- Show hyperlinks for the three functions in the switch statement (Sort, Remove Dups, Shuffle) --> <p> <a href="SongOrganizer.php?action=Sort%20Ascending">SortSong List</a><br /> <a href="SongOrganizer.php?action=Remove%20Duplicates">Remove Duplicate Songs</a><br /> <a href="SongOrganizer.php?action=Shuffle">Shuffle Song List</a><br /> </p> <!-- web form for entering new song names into the song list --> <form action="SongOrganizer.php" method="post"> <p>Add a New Song</p> <p>Song Name: <input type="text" name="SongName" /></p> <p><input type="submit" name="submit" value="Add Song to List" /> <input type="reset" name="reset" value="Reset Song Name" /></p> </form> </body> </html>
