Elements combination of same array in PHP

Question

In my project, i will have to receive a string from user (in textarea). Now this string will be converted into array . Now the problem is that, the character length must be minimum of 3, in the following array next element should be joined to current one if character length is less than 3. How to perform it in PHP .

a[0]=>this a[1]=>is a[2]=>an a[3]=>example a[4]=>array.

Output should be:

a[0]=>this a[1]=>isan a[2]=>example a[3]=>array.

Answer 1

Just try with:

$input  = ['this', 'is', 'an', 'example', 'array.'];
$output = [];

$part = '';
foreach ($input as $value) {
    $part .= $value;
    if (strlen($part) > 3) {
        $output[] = $part;
        $part = '';
    }
}

Output:

array (size=4)
  0 => string 'this' (length=4)
  1 => string 'isan' (length=4)
  2 => string 'example' (length=7)
  3 => string 'array.' (length=6)