PHP rendering two columns, but I need three columns - php

Question

I have some php that creates two columns of website content categories with child articles from that category. I've tried messing with the code that inserts the after two posts are listed, but it's not working (because I don't know what I'm doing). The current php renders as follows:
<div class="row">
<div class="column col-half">...</div>
<div class="column col-half">...</div>
</div>
I'd like it to render as:
<div class="row">
<div class="column col-third">...</div>
<div class="column col-third">...</div>
<div class="column col-third">...</div>
</div>
Here is the theme's code that renders the HTML:
$st_categories = get_categories($st_hp_cat_args);
$st_categories = wp_list_filter($st_categories,array('parent'=>0));
if ($st_categories) {
foreach($st_categories as $st_category) {
$st_cat_counter++;
if ((!is_int($st_cat_counter / 2)) && $st_cat_counter != 1) {
echo '</div><div class="row">';
} elseif ($st_cat_counter == 1) {
echo '<div class="row">';
}
echo '<div class="column col-half '. $st_cat_counter.'">';
echo '<h3> <a href="' . get_category_link( $st_category->term_id ) . '" title="' . sprintf( __( 'View all posts in %s', 'framework' ), $st_category->name ) . '" ' . '>' . $st_category->name.'</a>';
if (of_get_option('st_hp_cat_counts') == '1') {
echo '<span class="cat-count">(' . $st_category->count.')</span>';
}
echo '</h3>';
Thanks in advance.

Answer 1

You need to change just a couple of things (I improved the code style in terms of lines and indentation as well):
$st_categories = get_categories($st_hp_cat_args);
$st_categories = wp_list_filter($st_categories,array('parent'=>0));
if ($st_categories) {
foreach($st_categories as $st_category) {
$st_cat_counter++;
if (1 === $st_cat_counter % 3 && $st_cat_counter !== 1) { // change 2 -> 3 and use mod operator %
echo '</div><div class="row">';
} elseif ($st_cat_counter == 1) {
echo '<div class="row">';
}
echo '<div class="column col-third '. $st_cat_counter.'">'; // half -> third
echo '<h3> <a href="' . get_category_link( $st_category->term_id ) . '" title="' . sprintf( __( 'View all posts in %s', 'framework' ), $st_category->name ) . '" ' . '>' . $st_category->name.'</a>';
if (of_get_option('st_hp_cat_counts') == '1') {
echo '<span class="cat-count">(' . $st_category->count.')</span>';
}
echo '</h3>';