suddividere testo in più pagine

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versione notice free

 <?php
 $testo ="prova1[new_page]prova2[new_page]prova3[new_page]prova4[new_page]prova5";


$tot_pages = explode("[new_page]", $testo);
if (empty($_GET['page']) || !is_numeric($_GET['page'])) $page = 1;
else $page = $_GET['page'];
echo $tot_pages[$page - 1] . "

";
for ($i = 1; $i < count($tot_pages) + 1; $i++)
{
    if ($i == $page) {
        echo "[b]$i[/b] ";
    } else {
        echo "<a href=\"?page=$i\">$i</a> ";
    }
}

 ?>