How to change class of first echo result in PHP?

3 Views

Easy one, but I can’t find an answer.

I wanna to list sub-categories to create tabs in code below. This one works fine in my output. But the first tab needs a <li class= "selected" > to show the content on page load .

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How to force the first echo result to include a class on <li> element ?

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[ Output ]

Actual: ………. Category 1 | Category 2 | Category 3

Needed: ………. Category 1* | Category 2 | Category 3

*class=”selected” 

  <ul class="cd-tabs-navigation">

  <?php
  $argumentos = array(
  'hide_empty' => 1,
  'child_of' => 44,
  );
  $categories = get_categories($argumentos);
  foreach($categories as $category) {
  echo '<li><a data-content="' . $category->slug . '" href="#' . $category->slug . '">' . $category->name . '</a></li>';
  }
  ?>

  </ul>

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[ EDIT ]

The solution by Lal. Thank you everyone! 

  foreach($categories as $category) {
  if(++$i==1)
  echo '<li class="selected"><a class="selected" data-content="' . $category->slug . '" href="#' . $category->slug . '">' . $category->name . '</a></li>';
  else
  echo '<li><a data-content="' . $category->slug . '" href="#' . $category->slug . '">' . $category->name . '</a></li>';
  }
Post Views: 3

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3 comments

  1. I would suggest you to use a counter.. Not sure if this is the right way to do it..

    Change your foreach as follows

    $i=0;
foreach($categories as $category) {
  if($i==0)
    echo '<li class="selected"><a data-content="' . $category->slug . '" href="#' . $category->slug . '">' . $category->name . '</a></li>';
  else
    echo '<li><a data-content="' . $category->slug . '" href="#' . $category->slug . '">' . $category->name . '</a></li>';
  $i++;
  }

    OR

    As suggested in the answer here, you could use array_shift() to process the first item in the array separatley.

    That is, do it as below

    $first = array_shift($categories);
echo '<li class="selected"><a data-content="' . $first ->slug . '" href="#' . $first ->slug . '">' . $first ->name . '</a></li>';
foreach($categories as $category) {
  echo '<li><a data-content="' . $category->slug . '" href="#' . $category->slug . '">' . $category->name . '</a></li>';
}

    Read more about array_shift() in the docs

  2. Lal’s solution will work fine (as long as you increment $i), but here’s a simpler way to do it without an extra variable for the counter : 

    foreach($categories as $index => $category){
   if(!$index) echo "This is the first element";
   else echo "This is not the first element";
}

    (not sure if this should be an edit or an answer since it’s basically the same method but with a slightly simpler synthax, I’ll post as an answer for now)

  3. You can use this syntax for foreach. Using this syntax you have in $k the index of the iteration, while in $v the value of the array you’re iterating. So if $k == 0 you’re in the first iteration.

    $a = array("first", "second", "third", "fourth");

foreach ($a as $k=>$v) {
    echo $k . "--->" . $v ;
    if($k == 0){
        echo "First iteration!";
        //Do your stuff 
    }
    echo "<br>";
}

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