搜索文件的单词和删除行

Question

This is a second request on the same subject. I wasn't clear I needed the line to be deleted.

I searched here and found part of a script that is suppose search for a word and delete the line. There seems to be a slight error with what I'm trying to do.

I have an option list in a pull down. I would like for it to remove the line selected. The file choice.php that is called from the pull down page seems to be released when the php below is called called because there is no access denied, or violation errors.

These are the errors I'm getting after adding the 3 last lines I was told I need.

fopen() expects at least 2 parameters, 1 given
implode(): Invalid arguments passed
fwrite() expects parameter 1 to be resource, boolean given
fclose() expects parameter 1 to be resource, boolean given

Thanks in advance

<?php
//  Separate choice.php has the following pull down 
//  Select item to delete from list
//  <option value="item1.php">Item 1</option>
//  <option value="item2.php">Item 2</option>
//  ...... many items.

$workitem = $_POST["itemtodelete"]; 

$file = file("option.list.php");
foreach( $file as $key=>$line ) {
    if( false !== strpos($line, $workitem) ) {
      unset ($file[$key]);
    }
}
// Removed "
"
$file = implode("", $file);
// Told to add this.
$fp = fopen ("option.list.php");
fwrite($fp,implode("",$file);
fclose ($fp);

?>

Answer 1

Ok. You are missing some closing parenthesis, as well as other things.

$replaceItem = $_POST['itemtodelete']; // You should filter this data

$newContents = "";
$path = PATH_TO_FILE; // This could be hard coded, but not recommended
$filename = "option.list.php";

// Check to see if the file exists
if ( file_exists($path."/".$filename) ) {
    // Wrap our IO stuff so we catch any exceptions
    try {
        // Open the file for reading
        $fp = fopen($path."/".$filename, "r");
        if ($fp) {
            // Loop line-by-line through the file
            while($line = fgets($fp, 4096) !== false) {

                // Only add the line if it doesn't contain $replaceItem
                // This is case insensitive. I.E. 'item' == 'ITEM'
                // For case sensitive, use strstr()
                if ( stristr($line, $replaceItem) == false ) {
                    $newContents .= $line;
                }
            }
        }
        // Close our file
        fclose($fp);

        // Replace the contents of the file with the new contents
        file_put_contents($path."/".$filename, $newContents);                
    } catch (Exception $e) {
        throw new Exception($e->getMessage());
    }
}

Edit: Try this. I modified it somewhat.