将变量拆分为数组

I'm trying to get a PHP script to split a list of numbers separated by a comma into an array, which i can then loop through and execute a command for each number in the list.

So what i really want to achieve is this;

$numbers = "2564521,5451254"
$data = array($numbers)

However this will not work with an array.

This is what i have so far;

$data = array(2564521,5451254);

//Our 'stepping' variable
$g = 0;

//Our rowcount
$rowcount = 0;

echo "<table cellspacing='0'>";
    for ($i=0; $i<count($data); ) {

        $rowcount++;
        echo "    <tr>"; //New row

        $g = $i + 3; //Set our nested limit
        for( ; $i<$g; $i++) { //nested for loop

            if (!isset($data[$i])) { //Allow us to break on incomplete rows
                break;
            }

            echo "        <td style='border: 1px #000 solid;'>"; //Out put a cell
            echo "         Number: $data[$i]</p>";
            echo "        </td>";
            echo "$data[$i]</p>";

            $tonumbers = "$data[$i]";

//Execute command for each number


        }

        echo "    </tr> "; //End New Row
    }

echo "</table>";?>

I would appreciate any help, thanks! 

I am a bit confused by your code. Let me see if this is what you are looking for.

<?php

$testdata = "123123123123,34234804982";

$data = explode(",", $testdata);

foreach($data as $number) {
    echo $number . '|';
}

?>

Looks like PHP, if so you can do

$data = explode(",", $numbers);