Custom Fields

<!------------------------------------------------------Custom Fields--------------------------------------------------------------->
<?php
/*
   This page contain most important parts wordpress theme development.
   like(custom field)
*/
/*==================================Custom Field====================================*/
/*single custom field*/

<?php echo get_post_meta($post->ID,'url',true); ?>


/*=======================Display custom field(if custom field exist than show  otherwise keep it empty)=============*/
  <?php $sumon=get_post_meta($post->ID,'sumon_description',true);?>
  <?php if($sumon) : ?>
  <p><?php echo $sumon;?></p>
  <?php endif;?>

/*========================Conditional Custom Field===============================================*/
  <?php $sumon=get_post_meta($post->ID,'sumon_description',true);?>
  <?php if($sumon) : ?>
  <p><?php echo $sumon;?></p>
  <?php else :?>
  <p>You have to choose a text</p>
  <?php endif ;?>

  /*
     when you set up images in custom field  your image must be form localhost or your server.
  */
 <?php $picture=get_post_meta($post->ID,'url',true);?>
 <?php if($picture) : ?>
 <p><img src="<?php echo $picture; ?>" alt="" /></p>
  <?php else :?>
  <p>You have to set up author image</p>
 <?php endif;?>

?>