php，在数组中分割额外值之后

Question

I put in file this content:

12x4x11
12x17x20
4x19x30
5x18x10
17x6x18
19x30x20
11x2x17
30x13x19
22x23x7
17x28x2
5x17x30

When i read file line by line and spliting line with pattern 'x', to array always adding the extra space in array, so sorting array is not properly. Here code:

$array = array();
$handle = fopen("2.txt", "r");
if ($handle) {
    while (($line = fgets($handle)) !== false) {
        $line = split('x', $line);
        //sort($line);
        print_r($line);
        array_push($array, $line);
    }
    fclose($handle);
} else {
    echo "File is failed to open";
} 

How is looking array:

http://i.stack.imgur.com/OhLzQ.png

And after sorting:

http://i.stack.imgur.com/4t4V4.png

Answer 1

You just need to remove the last element of your array before putting it in your array using the array_pop function :

PHP

$array = array();
$handle = fopen("2.txt", "r");
if ($handle) {
    while (($line = fgets($handle)) !== false) {
        $line = split('x', $line);
        array_pop($line);
        //sort($line);
        print_r($line);
        array_push($array, $line);
    }
    fclose($handle);
} else {
    echo "File is failed to open";
} 

or you can use PHP trim function to remove space at the end of your line :

PHP

$array = array();
$handle = fopen("2.txt", "r");
if ($handle) {
    while (($line = fgets($handle)) !== false) {
        $line = split('x', trim($line));
        //sort($line);
        print_r($line);
        array_push($array, $line);
    }
    fclose($handle);
} else {
    echo "File is failed to open";
}