increment string?

[Anon]

I have a counter sort of in a file that I need to increment by 1 everytime. I read the current counter with fgets, but when I go to increment it does a combination of adding and concatenation.

code...
.........................
$file = fopen("myfile.txt","r+")
while (!feof ($file)) {
$id = fgets($file, 4096);
}
$id = 1 + $id; // I tried all variations...

echo $id
...........................

If $ id was 12, it will echo 1213, then 12131214, etc...fun but not useful. How can I force this to be a number? or is there better way to do this whole counter increment thingy.

Thanks

Jadow

[Anon]

Try $id++. Since PHP is an untyped language there are times when it won't get the type correct for an operation. Since the ++ operation can't be confused with a string operation it should work for you.

++ is the same as $id = $id + 1.

[Anon]

what are you trying to count? lines, characters?

[Anon]

I tried $id++ and all the other variations too. I'm keeping count of a unique record ID for a flat file database so I need to store an integer, get then inrement it by one and put it back.

I did get it working by reading the file in an array though..

<code>

$filecontent = file("myfile.txt");
$id = $filecontent[0] + 1;
$fd = fopen("myfile.txt","w");
fputs($file, $id);

fclose($file);

</code>

I guess I can't do it with fgets.

Jadow

[cheesehead]

You can type cast in PHP if you want.

Try adding:

$idnum = (int) $id;

before trying to increment it by one. That should sort it out for you.