CODEWITHSUNDEEP
phpfilefgets
Big_Chair
Big_Chair

Reputation: 3239

fgets() returns false even though file is not empty

I have a form from which I save the given input into a textfile,
but I have trouble reading from the saved file:

while(!feof($fileNotizen)) {
$rawLine = fgets($fileNotizen);
if($rawLine==false) {
  echo "An error occured while reading the file"; 
}


$rawLine seems to be always false, even though I use this function before, to fill the textfile: 

function addToTable($notizFile) {
 fwrite($notizFile, $_POST["vorname"]." ".$_POST["nachname"]."#");
 $date = date(DATE_RFC850);
 fwrite($notizFile, $date."#");
 fwrite($notizFile, $_POST["notiz"].PHP_EOL);   
}


And after I submit the form and get the error message, if I check the textfile, everything is there, so the function works correctly.

If it is of value, I open the file with this command:

$fileNotizen = fopen("notizen.txt", "a+");

Could the problem be that the pointer is already at the end of the file and thus returns false?

Upvotes: 0

Views: 3743

Answers (2)

Amr
Amr

Reputation: 5159

To read/get content of the file try this function:

    function read_file($file_name) {
        if (is_readable($file_name)) {
            $handle = fopen($file_name, "r");
            while (!feof($handle)) {
                $content .= fgets($handle); 
            }
            return !empty($content) ? $content : "Empty file..";
        } else {
            return "This file is not readable.";
        }
    }

and if you want to see content of the file displayed on separate lines then use <pre></pre> tag like this: 

echo "<pre>" . read_file("notizen.txt") . "</pre>";

and if you want to write/add content to the file then try this function:

    function write_file($file_name, $content) {
        if (file_exists($file_name) && is_writable($file_name)) {
            $handle = fopen($file_name, "a");
            fwrite($handle, $content . "\n");
            fclose($handle);
        }
    }

and you can use it like this: 

$content = "{$_POST["vorname"]} {$_POST["nachname"]}#" . date(DATE_RFC850) . "#{$_POST["notiz"]}";
write_file("notizen.txt", $content);

Upvotes: 0

CodeAngry
CodeAngry

Reputation: 12985

$fileNotizen = fopen("notizen.txt", "a+");

a+ opens for read/write but places file pointer AT THE END. So you must fseek() to the beginning first or look into fopen() flags and choose more wisely based on your needs.

Use fseek($fileNotizen, 0, SEEK_SET); to rewind the file.

Upvotes: 2

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