Question

I want call a BEFORE in PHP

my code so far:

<?php
$folder_path = $cdnurl . 'assets/' . $pid . '/';

// Loop from 2 to 5
for ($i = 2; i <= 6; $i++) {

if(@fopen($folder_path . $i . '/large.jpg',"r")){
?>

    <li><a id="<?php echo $i;?>" href="<?php echo $i;?>/large.jpg"><?php echo $i;?></a></li>

<?php } else {
break;
}
}?>

EDIT
I edited the code above as it is already nested with IF and ELSE. I want it to echo. something like

<ul>
<li>2</li>
<li>before</li>
<li>3</li>
<li>4</li>
</ul>

Answer 1

That’s just a basic if():

for ($i = 2; $i <= 6; $i++) {
   if ($i < 3) {
      echo "before 3"
   } else {
      echo "<li> yada yada yada";
   }
}

Though, since you’re starting your for loop at 2, this would only ever output “before 3” once, when i=2. So it’d be more efficient to do:

echo "before 3";
for ($i = 3; .......) {
    echo "<li>....";
}

instead and save yourself the useless if() check.

---

given your code sample update:

echo "<ul>";
for ($i = 2; $i <= 6; $i++) {
    if ($i == 3) {
        echo "<li>before</li>";
    }
    if (is_readable("{$folder_path}{$i}/large.jpg")) {
        echo <<<EOL
<li><a id="{$i}" href="{$i}/large.jpg">{$i}</a></li>
EOL;
    }
}
echo "</ul>";

Note the use of is_readable(). It’s easier to check for a file’s existence/readability using that than trying open the file. As well, note the HEREDOC used to output the list element, rather than a regular echo.