Dumping an Array - php

Question

I have a fairly basic setup with Wordpress Advanced Custom Fields. I have a need to add extra fields to a custom post and then display them on the post page. I have this code that DOES work, but when I got to a custom field that has multiple checkbox selections, obviously that particular field dumps out the word ‘array’, as it is an array.
How can I make this code below, dump all labels and data for regular fields as well as for fields that have an array in them.
$fields = get_field_objects();
if( $fields )
{
echo '<div class="item-info-custom">';
echo '<dl class="item-custom">';
echo '<dt class="title"><h4>Custom Information</h4></dt>';
foreach( $fields as $field_name => $field )
{
echo '<dt class="custom-label">' . $field['label'] . ': </dt>';
echo '<dd class="custom-data">' . $field['value'] . '</dd>';
}
echo '</dl>';
echo '</div>';
}
This is the final code that I got to work:
<?php
$fields = get_field_objects();
if( $fields )
{
echo '<div class="item-info-custom">';
echo '<dl class="item-custom">';
echo '<dt class="title"><h4>Custom Information</h4></dt>';
foreach( $fields as $field_name => $field )
{
echo '<dt class="custom-label">' . $field['label'] . ': </dt>';
echo '<dd class="custom-data">';
if (is_array($field['value'])) {
echo implode(', ', $field['value']);
}
else {
echo $field['value'];
}
echo '</dd>';
}
echo '</dl>';
echo '</div>';
}
?>

Answer 1

Depending on the composition of the arrays in $field['value'] you can do one of the following:
If it's a simple list of values you can just tape them together with implode.
echo '<dd class="custom-data">' . (is_array($field['value'])?implode(", ", $field['value']:$field['value']) . '</dd>';
If the array contains data represented like the main array (with label and value keys) you can create a function to render the array and call it recursively when you encounter a array value.
<?php
function showFields($data){
echo '<div class="item-info-custom">';
echo '<dl class="item-custom">';
echo '<dt class="title"><h4>Custom Information</h4></dt>';
foreach( $fields as $field_name => $field )
{
echo '<dt class="custom-label">' . $field['label'] . ': </dt>';
if (is_array($field['value'])){
showFields($field['value']);
}
echo '<dd class="custom-data">' . $field['value'] . '</dd>';
}
echo '</dl>';
echo '</div>';
}
$fields = get_field_objects();
if( $fields ) showFields($fields);

Answer 2

You'll need to do some type checking. You can use functions like is_array() and do additional logic.
For example:
echo '<dd class="custom-data">';
if (is_array($field['value'])) {
echo implode(', ', $field['value']);
}
else {
echo $field['value'];
}
echo '</dd>';