[SOLVED] Trimming an array

[slpctrl]

Alright, I've been having a really really tough time trimming all the extra zeros at the end of an array that I've got. Here is what I'm trying to do:

 

<?php
for ($y=0; $y<10; $y++){
unset($pixls[$y]);
}
$num = array_sum($pixls);
$num1 = (array_sum($pixls))-(10);
for ($x=$num1; $x<$num; $x++){
unset($pixls[$x]);
}
?>

 

The first one works, the second doesn't and I can't for the life of me figure out why. Might anyone know why this code doesn't work?  ???

[genericnumber1]

array_sum() adds up all of the numbers inside of the array. I think you're looking for count() which returns the length of the array... although without thinking too much just dropping count() in for array_sum() how you're using it won't work, but I can't tell you how to fix it because I have no idea what you're trying to do.

[slpctrl]

array_sum() adds up all of the numbers inside of the array. I think you're looking for count() which returns the length of the array... although without thinking too much just dropping count() in for array_sum() how you're using it won't work, but I can't tell you how to fix it because I have no idea what you're trying to do.

 

Here is my code:

 

<?php
function getpixels($pic){
//Create a new image inside of the program to examine
$image = imagecreatefrompng($pic);
//get dimensions of said image
list($width, $height) = getimagesize($pic);
//Divides the height by 2 so that we're taking a 1 pixel slice from the MIDDLE
$height = $height/2;
//Creats an array called vars to store the digits representing the colors across
$vars = array();
//Loops the program until it gets all the way to the end of the image
for ($i=0; $i<=$width; $i++){
  //Get's the color of the current position
  $color = imagecolorat($image, $i, $height);
  //uses array push to force the color of the current position to the end of the array
  array_push($vars, $color);
}
//Makes the function return the array
return $vars;
}
$pixls = getpixels("barcode.png");
for ($y=0; $y<10; $y++){
unset($pixls[$y]);
}
$num = array_sum($pixls);
$num1 = (count($pixls))-(10);
for ($x=$num1; $x<$num; $x++){
unset($pixls[$x]);
}
foreach($pixls as $pixl){
echo $pixl;
}
$codes = array("0001101", "0011001", "0010011", "0111101", "0100011", "0110001", "0101111", "0111011", "0110111", "0001011");
?>

 

(Don't worry about the $codes array, it's an array of barcode codes representing 1-9, but that'll come later when I can get the array that I'm working with properly stripped. There is a white border, represented by 0s. 10 on each side; I need to remove both from each side, and I for the life of me can't get it to work.

[printf]

 

 

 

replace this...

 

$pixls = getpixels("barcode.png");
for ($y=0; $y<10; $y++){
unset($pixls[$y]);
}
$num = array_sum($pixls);
$num1 = (count($pixls))-(10);
for ($x=$num1; $x<$num; $x++){
unset($pixls[$x]);
}

 

 

with this...

 

$pixls = array_slice ( getpixels ( 'barcode.png' ), 10, - 10 );

[.josh]

okay wait wait wait...so is this still your barcode thing? And you're saying all those 1's and 0's are in an array for example, like this:

 

array(0,0,0,0,1,0,1,1,0,0,1,0,1,0,0,0,0,0)

 

and you're wanting to end up with this?

 

array(1,0,1,1,0,0,1,0,1)

 

See I thought you had them in a string, that's why I mentioned trim in some other thread (and why did you start a new thread for this?).  If that's what the goal is, then do this:

 

$string = array(0,0,0,0,1,0,1,1,0,0,1,0,1,0,0,0,0,0);
$string = implode('',$string);
$string = trim($string,'0');
$string = str_split($string);

[slpctrl]

 

 

 

replace this...

 

$pixls = getpixels("barcode.png");
for ($y=0; $y<10; $y++){
unset($pixls[$y]);
}
$num = array_sum($pixls);
$num1 = (count($pixls))-(10);
for ($x=$num1; $x<$num; $x++){
unset($pixls[$x]);
}

 

 

with this...

 

$pixls = array_slice ( getpixels ( 'barcode.png' ), 10, - 10 );

 

Thank you so much! It's weird though, sometimes there's the border (represented by 10 0s) is still there, sometimes it's not, and sometimes there's just one or 2 extra 0s on the end. But this is as close as I'm gonna get probably, thanks!

[slpctrl]

okay wait wait wait...so is this still your barcode thing? And you're saying all those 1's and 0's are in an array for example, like this:

 

array(0,0,0,0,1,0,1,1,0,0,1,0,1,0,0,0,0,0)

 

and you're wanting to end up with this?

 

array(1,0,1,1,0,0,1,0,1)

 

See I thought you had them in a string, that's why I mentioned trim in some other thread (and why did you start a new thread for this?).  If that's what the goal is, then do this:

 

$string = array(0,0,0,0,1,0,1,1,0,0,1,0,1,0,0,0,0,0);
$string = implode('',$string);
$string = trim($string,'0');
$string = str_split($string);

 

Perfect. Thank you so much.