What are common pitfalls to avoid when designing mobile-friendly tables in PHP?

One common pitfall to avoid when designing mobile-friendly tables in PHP is not utilizing responsive design techniques. To ensure that tables display properly on mobile devices, it's important to use CSS media queries to adjust the layout and styling based on screen size. Additionally, using a mobile-first approach can help prioritize the most important information for smaller screens.

// Example PHP code snippet demonstrating the use of responsive design techniques for mobile-friendly tables

echo '<table class="responsive-table">';
echo '<tr>';
echo '<th>Header 1</th>';
echo '<th>Header 2</th>';
echo '</tr>';
echo '<tr>';
echo '<td>Data 1</td>';
echo '<td>Data 2</td>';
echo '</tr>';
// Add more table rows as needed
echo '</table>';
```
CSS:
```css
.responsive-table {
  width: 100%;
  border-collapse: collapse;
}

@media screen and (max-width: 600px) {
  .responsive-table th, .responsive-table td {
    display: block;
  }
  
  .responsive-table th {
    text-align: left;
  }
}