PHP循环遍历数组并将其元素转换为一个字符串

Question

I'm trying to loop through an array that I got from preg_match_all result in order to create one string from all results.

Array looks like this:

print_r($matches[0]);


Array
(
    [0] => Array
        (
            [0] => 8147
            [1] => 3
        )

    [1] => Array
        (
            [0] => 8204
            [1] => 20
        )

)

And my code:

$found = count($matches[0]);
for ($i = 0; $i <= $found; $i++) {
$string = $matches[0][$i];
}

I would like to get result of $string like this: 8147, 8204

How i can append $matches[0][0] to $matches[0][1] etc. in string variable using loop?

Answer 1

With php5.5 and more you can use array_column + implode:

echo implode(', ', array_column($matches, 0));