What are some common pitfalls when passing arrays from one PHP page to another using POST method?

One common pitfall when passing arrays from one PHP page to another using the POST method is that the array data may not be properly serialized before sending it. To solve this issue, you can use the `json_encode()` function to serialize the array before sending it, and then `json_decode()` to decode it on the receiving page. 

// Sending page
$data = array('key1' => 'value1', 'key2' => 'value2');
$post_data = json_encode($data);

// Send the serialized array using POST method

// Receiving page
$post_data = $_POST['post_data'];
$data = json_decode($post_data, true);

// Now $data is the original array that was sent

Keywords

arrays POST method serialization unserialize data loss

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