String to Value

[Erazer]

Hi
I'm using the EXIF functions to read camera setting of my photos. In some cases it returns the value as a string e.g 2.8 is returned as "28/10". Is there a function to convert the string into a numeric value?

sorry if this seems newbie question
thanks

[Jeremysr]

intval() will convert a variable to an integer, I think that's what you want.

$string = intval($string);

Edit: Also, floatval() will return a floating-point value.

[code=php:0]
$string = "45.9";
$int_string = intval($string);
$float_string = floatval($string);
echo ($int_string); // Will echo 45
echo ($float_string); // Will echo 45.9
[/code]

[AndyB]

Sloppy but functional:
[code]<?php
$string = "28/10";
$bits = explode("/",$string); // split string at /
if (count($bits)>1) {
    $string = $bits[0]/$bits[1];
}
echo $string; // output 2.8
?>[/code]

[Erazer]

Hi Jeremysr
thanks for the quick reply, I've tried the floatval() before but it doesnt seem to work if there is a operand in the string so

$string = "45.9";
$float_string = floatval($string);
echo ($float_string); // Will echo 45.9

but

$string = "45.9+10";
$float_string = floatval($string);
echo ($float_string); // Will also echo 45.9 and not 55.9

so i'm looking for something that will do the math in the string and out the result

thanks

[Erazer]

Hi AndyB
that works great so thanks for the help. I had a feeling it needed some string manipulation and break down but since i've just started learning your sloppy code is an eye opener  ;)

thanks again

[Barand]

or

[code]<?php
$str = "28/10";
eval ("\$x=$str;");
echo $x;
?>[/code]