Wordpress insert multiple rows into a data table - php

Question

i want to insert some data into a data table, for a wordpress plugin.
the data is taken with POST.
i have multiple results (taken with post), but $wpdb->insert only inserts me the last result (practically overwrites the data). why is that?
here is my code:
html:
echo '<label for="reduceri-post-category"><b>' . __("What categories should be the adverts", 'appplugin' ) . '</b></label><br /><br /><br />';
?>
<?php foreach ($the_data[categories] as $sat): ?>
<b> <?= $sat[name]; ?> <br /> </b>
<?php foreach ($sat[subcategories] as $cat):
?>
<input type="checkbox" name="reduceri-post-category" value="<?= $cat[sid] ?>" /> <?php echo $cat[name]; echo $cat[sid]; ?><br />
<? endforeach; ?>
<? endforeach; ?>
global $wpdb;
$thedata['reduceri-post-category'] = $_POST['reduceri-post-category'];
$table_name = $wpdb->prefix . "reduceri";
foreach ($thedata as $key => $value) {
if( $post->post_type == 'revision' ) return;
if ( $post->post_type == 'post'){
$wpdb->insert($table_name, array( 'time' => current_time('mysql'), 'post' => $post->ID, 'category' => $value));
}
}
what can i do in order to be able to insert ALL the results, not only the last one?? thanks a lot!

Answer 1

What is in reduceri-post-category?
You say that you have multiple values in post. How are these multiple values passed into your plugin? Does reduceri-post-category contain multiple values? Do you use separate keys for each of the values? For example, reduceri-post-category2/3/4?
You are using a foreach to iterate through $thedata. However I don't see anywhere in your code where you actually create an array in $thedata. So your foreach is only ever going to execute once, and it will execute based on what is inside $_POST['reduceri-post-category'];
What I think you want to do, tough to say, is one of these two scenarios.
Scenario 1 - multiple post keys hold data you are after
$thedata[foo1] = $_POST[foo1];
$thedata[foo2] = $_POST[foo2];
$thedata[foo3] = $_POST[foo3];
foreach ($thedata as $key => $value) { }
Or (pseudeocode) - a single post key holds all your category data. So you have to split it up and then execute on each one.
$thedata = explode("?", $_POST[reduceri-post-category]);
foreach ($thedata as $key => $value) { }