3v4l.org

run code in 300+ PHP versions simultaneously
<?php $count = 0; $count_total = 10; $columns = 3; $all_posts = array(1,2,3,4,5,6,7,8,9,10); foreach ($all_posts as $k => $v) { $count++; $is_first_column = false; if ($count == 1 || ($count-1) % $columns == 0) { $is_first_column = true; } echo '<article id="post-' . $k . '" class="post-col ' . ($is_first_column ? 'column_1' : '') . '">'; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<article id="post-0" class="post-col column_1"><article id="post-1" class="post-col "><article id="post-2" class="post-col "><article id="post-3" class="post-col column_1"><article id="post-4" class="post-col "><article id="post-5" class="post-col "><article id="post-6" class="post-col column_1"><article id="post-7" class="post-col "><article id="post-8" class="post-col "><article id="post-9" class="post-col column_1">
preferences:
228.24 ms | 406 KiB | 312 Q