dynamic_google_iframe.php

<?php

$listings = array(
    array(
        'address' => '3410 Taft Blvd',
        'city'    => 'Wichita Falls',
        'state'   => 'Tx',
        'zip'     => 76308
    )
);

foreach ( $listings as $listing ) {
    $address = urlencode( "{$listings['address_1']} {$listings['city']} {$listings['state']} {$listings['zip']}" );
    $response = json_decode( wp_remote_retrieve_body( wp_remote_get("http://maps.googleapis.com/maps/api/geocode/json?address={$address}&sensor=false") ), true );
    $geometry = $response['results'][0]['geometry'];

    if( 'OK' == $response['status'] ) {
        ?>
            <iframe width="100%" height="300" style="border: 0;" src="https://www.google.com/maps/?f=q&amp;source=s_q&amp;hl=en&amp;geocode=&amp;q=<?php echo $address; ?>&amp;t=m&amp;ll=<?php echo $geometry['location']['lat'];?>, <?php echo $geometry['location']['lng'];?>&amp;z=18&amp;iwloc=&amp;output=embed" frameborder="0"></iframe>

            <a class="map" title="Get Directions" href="http://maps.google.com/maps?saddr=&amp;daddr=<?php echo $address; ?>" target="_blank">
                <small>Click for Directions</small>
            </a>

        <?php
    }
}