PHP取代每2秒

Question

<?php
        $fact_BB = array("[start]", "[mid]", "[end]");
        $fact_HTML   = array("<tr><td class='FactsTableTDOne'><p>", "</p></td><td class='FactsTableTDTwo'><p>", "</p></td></tr>");

        $str_Facts = str_replace($fact_BB, $fact_HTML, $row['facts']);

        echo $str_Facts;
    ?>

Is it possible to switch between 2 $fact_HTML?

1. $fact_HTMLone = "code";
2. $fact_HTMLtwo = "code";
3. $fact_HTMLone = "code";
4. $fact_HTMLtwo = "code";
5. $fact_HTMLone = "code";

etc. etc.

Answer 1

What you want to achieve is a replace of some strings. I'd suggest a solution like this:

<?php
$str_Facts = $row['facts'];
$replacements = array( "[start]" => "<tr><td class='FactsTableTDOne'><p>",
                       "[mid]"   => "</p></td><td class='FactsTableTDTwo'><p>",
                       "[end]"   => "</p></td></tr>" );
foreach ($replacements as $repkey => $repval) {
    $str_Facts = str_replace($repkey,$repval,$str_Facts);
}
echo $str_Facts;
?>

If you want to go on with your approach, you'd loop through the arrays (you have to ensure that the both arrays have the same number of elements).

<?php
$str_Facts = $row['facts'];
for ($i=0;$i<count($fact_BB);$i++) {
    //if you want to switch every uneven, do this:
    if ($i%2!=0) continue;
    $str_Facts = str_replace($fact_BB[$i],$fact_HTML[$i],$str_Facts);
}
echo $str_Facts;
?>