Wordpress (PHP): How to Programmatically Insert Taxonomy Terms [Slug Definition, Error Handling, and Logging]

programmatic-wordpress-term-insertion.php

<?php
// Programmatic Insertion of Taxonomy Terms with Slug Definition, Error Handling, and Logging
add_action('init', function () {
    $taxonomyName = 'state';

    // Check if the taxonomy exists
    if (!taxonomy_exists($taxonomyName)) {
        error_log("Taxonomy {$taxonomyName} does not exist.");
        return;
    }

    $states = [
        'AK' => 'Alaska', 'AL' => 'Alabama', 'AR' => 'Arkansas', 
        'AS' => 'American Samoa', 'AZ' => 'Arizona', 'CA' => 'California', 
        'CO' => 'Colorado', 'CT' => 'Connecticut', 'DC' => 'District of Columbia', 
        'DE' => 'Delaware', 'FL' => 'Florida', 'GA' => 'Georgia', 
        'GU' => 'Guam', 'HI' => 'Hawaii', 'IA' => 'Iowa', 
        'ID' => 'Idaho', 'IL' => 'Illinois', 'IN' => 'Indiana', 
        'KS' => 'Kansas', 'KY' => 'Kentucky', 'LA' => 'Louisiana', 
        'MA' => 'Massachusetts', 'MD' => 'Maryland', 'ME' => 'Maine', 
        'MI' => 'Michigan', 'MN' => 'Minnesota', 'MO' => 'Missouri', 
        'MS' => 'Mississippi', 'MT' => 'Montana', 'NC' => 'North Carolina', 
        'ND' => 'North Dakota', 'NE' => 'Nebraska', 'NH' => 'New Hampshire', 
        'NJ' => 'New Jersey', 'NM' => 'New Mexico', 'NV' => 'Nevada', 
        'NY' => 'New York', 'OH' => 'Ohio', 'OK' => 'Oklahoma', 
        'OR' => 'Oregon', 'PA' => 'Pennsylvania', 'PR' => 'Puerto Rico', 
        'RI' => 'Rhode Island', 'SC' => 'South Carolina', 'SD' => 'South Dakota', 
        'TN' => 'Tennessee', 'TX' => 'Texas', 'UT' => 'Utah', 
        'VA' => 'Virginia', 'VI' => 'Virgin Islands', 'VT' => 'Vermont', 
        'WA' => 'Washington', 'WI' => 'Wisconsin', 'WV' => 'West Virginia', 
        'WY' => 'Wyoming',
    ];

    foreach ($states as $slug => $name) {
        if (empty(term_exists($slug, $taxonomyName))) {
            $inserted_term = wp_insert_term($name, $taxonomyName, ['slug' => $slug]);

            if (is_wp_error($inserted_term)) {
                error_log("Error inserting term {$name}: " . $inserted_term->get_error_message());
            } else {
                // Optional: Uncomment to log successful insertions
                // error_log("Inserted term {$name} successfully.");
            }
        }
    }
}, 999);