Question

I have this code:

$data[1] = "blablabla";
$data[2] = "blablablabla";
if (strlen($data) < 10)
{
  // doing...
}

In this code I want to check all elements from array. How to do it?

Answer 1

foreach ($data as $element) {
    if (strlen($element) < 10) {
        // Do something
    }
}

If you want to modify the data, use a reference (add a & before $element):

foreach ($data as &$element) {
    if (strlen($element) < 10) {
        // Do something to $element
        $element = "something else";
    }
}

If you don’t want to use references directly, you can use a standard for loop with an indexer:

for ($i = 0; $i < count($data); $i++) {
    if (strlen($data[$i]) < 10) {
        // Do something with $data[$i]
        $data[$i] = "something else";
    }
}