wtf? why does 037 == 31?

TimTimTimma

<?php
$x_coordinates = array(037);
echo $x_coordinates[0];
?>

The above script outputs 31...When I remove the 0 it outputs 37, but I would like to keep that 0 because it helps me align an array right below it that way i can compare the two arrays, and KNOW which ones below to which ones

$x_coordinates = array(037, 053, 077);
$y_coordinates = array(263, 213, 239);
$coordinate_id = array(001, 002, 003);

see? If i removed the 0 it would look like this..

$x_coordinates = array(37, 53, 77);
$y_coordinates = array(263, 213, 239);
$coordinate_id = array(1, 2, 3);

and if his grew the space between each array value woulde get further apart, and it would be VERY difficult to keep up. What can i do to fix this issue, im absolutely perplexed..

devinemke

when preceding an integer with a zero PHP assumes you are using octal (8-based) notation. consider this example:

<?php
$i = 037;
echo $i; // outputs 31

echo '<br>';

$i = (int) '037';
echo $i; // outputs 37
?>

read up on PHP integers

TimTimTimma

I was worreid about that...i havent learned to much about octals and hex yet..anyway ty

One question thou..

How would I fix this problem with an array...the values MUST be saved in an array..so how would I go about toogling from octal to whole. Ive tried with it On the array in the array, outside the array and on the actual array key, but nothing seems to work..=\

$x_coordinates = array(037);
echo $x_coordinates[0]; //this needs to out 37

SOLVED

I fixed it by adding single quotes around the numbers and toogling from string to int after I pull the element out.

Drakla

It's old joke time - why does Timma get Christmas and Halloween mixed up? Answers on a postcard to this thread.