php - Explode integer range with minuses

554

Is any better solution for get first and second value exploded by "-" with negative values than use explode function and check how many minuses are there?

$list = [
    '10-20',
    '12-14',
    '-5-10',
    '-10--2'
];

I would like to receive:

$first = 10; $second = 20;
$first = 12; $second = 14;
$first = -5; $second = 10;
$first = -10; $second = -2;

665

Answer

Solution:

You can use to explode your string, searching for a- which is preceded by a digit:

foreach ($list as $item) {
    list($first, $second) = {-code-1}('/(?<=\d)-/', $item);
    echo "\$first = $first, \$second = $second\n";
}

Output:

$first = 10, $second = 20 
$first = 12, $second = 14 
$first = -5, $second = 10 
$first = -10, $second = -2

Demo on 3v4l.org

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