WordPress – where are custom field saved?

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I have created some custom field – the custom field is displayed correctly in the WordPress admin section but I cannot find them in the database.

Any idea where custom field are saved? I could not find my custom field in the post data in wp_posts table.

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  1. Custom field data saved in the wp_postmeta table. Best way to access custom field is using wordpress built-in functions.

    for example:

    <?php
 $mykey_values = get_post_custom_values('my_key');
 foreach ( $mykey_values as $key => $value ) {
     echo "$key  => $value ('my_key')<br />";
 }
?>

    0 => First value (‘my_key’)

    1 => Second value (‘my_key’)

    2 => Third value (‘my_key’)

    You will get more information about accessing custom field in this link: http://codex.wordpress.org/Custom_Fields