Scratch

jvvg wrote:

You can process the text using something else and write it to the file when it's done processing.

Uh whut.

May I ask why you're using fwrite in the first place?
If you're trying to store data, then databases are much easier and much more secure than files, with some exceptions

jvvg wrote:

SJRCS_011 wrote:

May I ask why you're using fwrite in the first place?
If you're trying to store data, then databases are much easier and much more secure than files, with some exceptions

However, I think funelephant is new to PHP, and files are a lot easier to use to get started (my first PHP projects, and even most of Mod Share 3 used files).

Yes. Yes I am new 

So what the guys above me are trying to suggest, is that you use fopen and process the lines of the files into an array. Then using standard php string functions, you can do your processing. Finally, just write the array back into the file.

sparks wrote:

Are you trying to insert text into a line of an existing multiline text string? You could try using this code.

Code:

function addline($inputString, $line, $insertString){ //a function that inserts the string $insertString on a new line below the specified line number $line, in the string $InputString and returns the result. If the line number given is greater than the number of lines in the input string $inputString, it will add it at the bottom.
    $max = strlen($inputString); //make sure that the search system doesn't keep searching further than the actual length of the input
    $n = 0; //keeps track of the line count
    $c = 0; //keeps track of the character count
    for($i=0;$i<$max;$i++){ //loop through every character in your input string
        $c++;//increment the character counter by 1
        if($string[$i]=='\n'){
            $n++; // if the character equals a newline, change $n by 1.
        }
        if($n == $line){
            break; // if the line number reached is equal to the line you're looking for, leave the counting for loop.
        }
    }
    return substr($inputString, 0, $c) . $insertString . '/n' . substr($inputString, $c + 1, $max); // join together the section of the input string before the line you want to insert at, the string to input followed by a newline and then the other half of the input string and return this.
}

I hope this is vaguely understandable, I've commented the code (though I've not tried it out).

Further reading:
substr()
strlen()
for loops
functions in PHP

Thanks! I'll fix it later today 

And Happy Birthday!

Well, you could read each line into an array and then edit the array element to the line you want changed. Then just loop through the array, writing each line to the text file.