php - WordPress update_user_meta on form submit -


i have simple form , want edit user meta field on submit. i'm not php, found sample code thought might useful. however, once form submitted, user meta field won't update.

here code:

<?php      $user_id = get_current_user_id();  ?> <?php if(isset($_post['value'])) {     update_user_meta( $user_id, '_meta_value_val', $_post['value'] ); } ?>  <form method="post" action="" id="val_edit">     <input type="text" value="44" name="value">     <button value="done" type="submit" form="val_edit">invia</button </form>

thanks


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