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@ollietreend
Last active April 22, 2024 11:12
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Convert Advanced Custom Fields Pro configuration from PHP to JSON.
<?php
/**
* Plugin Name: Convert ACF PHP to JSON
* Description: Convert Advanced Custom Fields Pro configuration from PHP to JSON.
*/
namespace ConvertAcfPhpToJson;
/**
* Add submenu item under 'Custom Fields'
*/
function admin_menu() {
add_submenu_page('edit.php?post_type=acf-field-group', 'Convert PHP fields to JSON', 'PHP to JSON', 'manage_options', 'acf-php-to-json', __NAMESPACE__ . '\\admin_page');
}
add_action('admin_menu', __NAMESPACE__ . '\\admin_menu', 20);
/**
* Output the admin page
*/
function admin_page() {
?>
<div class="wrap">
<h1>Convert PHP fields to JSON</h1>
<?php
if (!isset($_GET['continue']) || $_GET['continue'] !== 'true') {
admin_page_intro();
}
else {
admin_page_convert();
}
?>
</div>
<?php
}
/**
* Output the introductory page
*/
function admin_page_intro() {
$groups = get_groups_to_convert();
if (empty($groups)) {
echo '<p>No PHP field group configuration found. Nothing to convert.</p>';
return;
}
else {
echo sprintf('<p>%d field groups will be converted from PHP to JSON configuration.</p>', count($groups));
echo '<a href="edit.php?post_type=acf-field-group&page=acf-php-to-json&continue=true" class="button button-primary">Convert Field Groups</a>';
}
}
/**
* Convert the field groups and output the conversion page
*/
function admin_page_convert() {
$groups = get_groups_to_convert();
echo sprintf('<p>Converting %d field groups from PHP to JSON configuration...</p>', count($groups));
echo '<ol>';
foreach ($groups as $group) {
if (convert_group($group)) {
echo sprintf('<li>Converted: <strong>%s</strong> (%s)</li>', $group['title'], $group['key']);
}
else {
echo sprintf('<li><strong>Failed to convert: %s</strong> (%s)</li>', $group['title'], $group['key']);
}
}
echo '</ol>';
echo '<p>Done. Now remove the PHP field group configuration.</p>';
}
/**
* Get the PHP field groups which will be converted.
*
* @return array
*/
function get_groups_to_convert() {
$groups = acf_get_local_field_groups();
if (!$groups) return [];
return array_filter($groups, function($group) {
return $group['local'] == 'php';
});
}
/**
* Convert a field group to JSON
*
* @param array $group
* @return bool
*/
function convert_group($group) {
$group['fields'] = acf_get_fields($group['key']);
return acf_write_json_field_group($group);
}
@joviczarko
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@ollietreend Thank you for this!

@kulterryan
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I'm getting failed to convert error. I've check acf json and file permission already.

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