mf_front_end.php

<?php

/**
 * Get the value of an input field.
 *
 * @param string $field_name
 * @param integer $group_index
 * @param integer $field_index
 * @param integer $post_id
 * @return a string or array based on field type
 */
function get ($field_name, $group_index=1, $field_index=1 ,$post_id=NULL) {
  global $post;

  if(!$post_id){ $post_id = $post->ID; }
  
  $field = get_data($field_name,$group_index,$field_index,$post_id);
  if(!$field) return FALSE;

  $type    = $field['type'];
  $options = $field['options'];
  $value   = $field['meta_value'];

  $result = _processed_value($value, $type, $options);
  return $result;

}

/**
 * Return a number of duplicate field 
 * 
 */
function get_count_field( $field_name , $group_index = 1 , $post_id = NULL){
  global $post;

  if(!$post_id){ $post_id = $post->ID; }
  $total = get_order_field($field_name,$group_index,$post_id);
  return count($total);

}

function get_count_group( $field_name , $post_id = NULL){
  global $post;

  if(!$post_id){ $post_id = $post->ID; }

  $total = get_order_group($field_name,$post_id);
  return count($total);

}

function get_audio( $field_name, $group_index=1, $field_index=1 ,$post_id=NULL ){
  global $post;

  if(!$post_id){ $post_id = $post->ID; }
  $audio = get($field_name,$group_index,$field_index,$post_id);
  
  if( empty($audio) ) return FALSE;
  
  $player = stripslashes(trim("\<div style=\'padding-top:3px;\'\>\<object classid=\'clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\' codebase='\http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0\' width=\'95%\' height=\'20\' wmode=\'transparent\' \>\<param name=\'movie\' value=\'".MF_URL."js/singlemp3player.swf?file=".urlencode($audio)."\' wmode=\'transparent\' /\>\<param name=\'quality\' value=\'high\' wmode=\'transparent\' /\>\<embed src=\'".MF_URL."js/singlemp3player.swf?file=".urlencode($audio)."' width=\'50\%\' height=\'20\' quality=\'high\' pluginspage=\'http://www.macromedia.com/go/getflashplayer\' type=\'application/x-shockwave-flash\' wmode=\'transparent\' \>\</embed\>\</object\>\</div\>"));
  
  return $player;
}

function pt(){
  return PHPTHUMB;
}

/**
 * Return a array with the order of a group
 *
 * @param string $groupName 
 */
function get_order_group($field_name,$post_id=NULL){
  global $post,$wpdb;
  
  if(!$post_id){ $post_id = $post->ID; }
  $sql = sprintf(
    "SELECT DISTINCT(group_count) ".
    "FROM %s " .
    "WHERE field_name = '%s' AND post_id = %d " . 
    "ORDER BY group_count ASC",
    MF_TABLE_POST_META,
    $field_name,
    $post_id
  );
  $elements = $wpdb->get_results($sql,ARRAY_A);

  $order = array();
  foreach($elements as $element){
    $order[] =  $element['group_count'];
  }
  return $order;
}

function get_order_field( $field_name, $group_index = 1 , $post_id = NULL ){
  global $post,$wpdb; 
	
  if(!$post_id){ $post_id = $post->ID; }
  $sql = sprintf(
    "SELECT DISTINCT( field_count ) " .
    "FROM %s " .
    "WHERE field_name = '%s' AND group_count = %d AND post_id = %d " .
    "ORDER BY field_count ASC",
    MF_TABLE_POST_META,
    $field_name,
    $group_index,
    $post_id
  );
  $elements = $wpdb->get_results($sql,ARRAY_A);

  $order = array();
  foreach($elements as $element){
    $order[] =  $element['field_count'];
  }
  return $order;

}

function get_post_type_name($post_id = NULL){
  global $post,$wpdb; 
	
  if(!$post_id){ $post_id = $post->ID; }

  $post_type = get_post_type($post_id);

  return $post_type;
}

function get_image ($field_name, $group_index=1, $field_index=1,$tag_img=1,$post_id=NULL,$params=NULL, $attr = NULL , $wp_size='original') {

  return create_image(
    array(
      'field_name' => $field_name, 
      'group_index' => $group_index, 
      'field_index' => $field_index,
      'param' => $params,
      'attr' => $attr,
      'post_id' => $post_id,
      'tag_img' => (boolean) $tag_img,
      'wp_size' => $wp_size
    )
  );
}

function get_field( $field_name , $group_index = 1 , $post_id = NULL ){
  global $post,$wpdb;
	
  if(!$post_id){ $post_id = $post->ID; }

  $sql = sprintf(
    "SELECT m.field_name, c.type, w.meta_value, m.field_count, c.options " .
    "FROM %s m " .
    "JOIN %s c ON m.field_name = c.name " .
    "JOIN %s w ON w.meta_id = m.meta_id " .
    "WHERE m.post_id = %d AND m.field_name = '%s' AND m.group_count = %d AND w.meta_value <> '' ".
    "ORDER BY m.group_count,c.display_order, m.field_count ASC",
    MF_TABLE_POST_META,
    MF_TABLE_CUSTOM_FIELDS,
    $wpdb->postmeta,
    $post_id,
    $field_name,
    $group_index
  );
  $fields = $wpdb->get_results($sql,ARRAY_A);

  $result = array();
  foreach($fields as $field){
    $type    = $field['type'];
    $options = $field['options'];
    $value   = $field['meta_value'];
    $field_index = $field['field_count'];

    if(is_serialized($value)){
      $value= unserialize( $value );
    }

    $result[$field_index] = _processed_value($value, $type, $options,1);

  }
  return $result;
}

function get_group( $group_name , $post_id = NULL ){
  global $post,$wpdb; 
	
  if(!$post_id){ $post_id = $post->ID; }
  
  $sql = sprintf(
    "SELECT m.field_name, c.type, w.meta_value, m.group_count, m.field_count, c.options ".
    "FROM %s m " .
    "JOIN %s c ON m.field_name = c.name " .
    "JOIN %s g ON c.custom_group_id = g.id  " .
    "JOIN %s w ON w.meta_id = m.meta_id " .
    "WHERE m.post_id = %d AND g.name = '%s' AND w.meta_value <> '' ".
    "ORDER BY m.group_count,c.display_order, m.field_count ASC",
    MF_TABLE_POST_META,
    MF_TABLE_CUSTOM_FIELDS,
    MF_TABLE_CUSTOM_GROUPS,
    $wpdb->postmeta,
    $post_id,
    $group_name
  );

  $fields = $wpdb->get_results($sql,ARRAY_A);

  $result = array();
  foreach($fields as $field){
    $type    = $field['type'];
    $options = $field['options'];
    $value   = $field['meta_value'];
    $group_index = $field['group_count'];
    $field_index = $field['field_count'];
    $field_name = $field['field_name'];

    if(is_serialized($value)){
      $value= unserialize( $value );
    }

    $result[$group_index][$field_name][$field_index] = _processed_value($value, $type, $options,1);
  }
  return $result;
}

function get_label($field_name,$post_id=NULL){
  global $post,$wpdb; 
	
  if(!$post_id){ $post_id = $post->ID; }
  
  $field = get_data($field_name,1,1,$post_id);
  if(!$field) return FALSE;

  return $field['label'];
}


/* AUX FUNCITONS */

/*
 * Generate an image from a field value
 *
 * Accepts a single options, an array of settings. 
 * These are the parameteres it supports:
 *
 *   'field_name' => (string) the name of the field which holds the image value, 
 *   'group_index' => (int) which group set to display, 
 *   'field_index' => (int) which field set to display,
 *   'param' => (string|array) a html parameter string to use with PHPThumb for the image, can also be a key/value array
 *   'attr' => (array) an array of extra attributes and values for the image tag,
 *   'post_id' => (int) a specific post id to fetch,
 *   'tag_img' => (boolean) a flag to determine if an img tag should be created, or just return the link to the image file
 *   'wp_size' => (string) size of image for image_media
 *
 */
function create_image($options){
  global $post,$mf_domain;
	
  // establish the default values, then override them with 
  // whatever the user has passed in
  $options = array_merge(
    array(
      // the default options
      'field_name' => '', 
      'group_index' => 1, 
      'field_index' => 1,
      'param' => NULL,
      'attr' => NULL,
      'post_id' => NULL,
      'tag_img' => true,
      'wp_size' => 'original'
    ), (array) $options);
	
  // finally extract them into variables for this function
  extract($options);
  
  // check for a specified post id, or see if the $post global has one
  if($post_id){
    
  }elseif(isset($post->ID)){
    $post_id = $post->ID;
  } else {
    return false;
  }

  // basic check
  if(empty($field_name)) return FALSE;
	
  $field = get_data($field_name,$group_index, $field_index,$post_id);
  if(!$field) return FALSE;

  $field_type = $field['type'];
  $field_css = $field['options']['css_class'];
  unset($field['options']['css_class']);
  $field_param = $field['options'];
  
  $field_value = $field['meta_value'];

  if($field_type == 'image_media'){
    $data = wp_get_attachment_image_src($field_value, $wp_size);
    $field_value = $data[0];
  }

  if(empty($field_value)) return "";
  
  $tmp_param = array();
  foreach($field_param as $p_k => $p_v){
    if( !empty($p_v) ){
      if( $p_k == 'max_height' ) $p_k ='h';
      if( $p_k == 'max_width' ) $p_k = 'w';
      if( $p_k == 'custom'){
        $tmp_param[] = $p_v;
      }else{
        $tmp_param[] = sprintf('%s=%s',$p_k,$p_v);
      }
    }
  }
  if( count($tmp_param) ){
    $field_param = implode('&',$tmp_param);
  }else{
    $field_param = '';
  }

  // override the default phpthumb parameters if needed
  // works with both strings and arrays
  if(!empty($param)) {
    if(is_array($param)){
      $p = array();
      foreach($param as $k => $v){
        $p[] = $k."=".$v;
      }
      $field_param = implode('&', $p);
    } else {
      $field_param = $param;
    }
  }

  // check if exist params, if not exist params, return original image
  if ( empty($field_param) ){
    if(in_array($field_type, array('image','image_alt') )){
      $field_value = MF_FILES_URL.$field_value;
    }
  }else{
    //generate or check de thumb
    $field_value = aux_image($field_value,$field_param,$field_type);
    if ( is_wp_error($field_value)){
        if (defined('WP_DEBUG') && WP_DEBUG == true) {
            return sprintf("%s: %s",__('Error generating thumbnail, reason',$mf_domain),$field_value->get_error_message());
        } else {
            return "";
        }
    }
    
  }

  if($tag_img){
    // make sure the attributes are an array
    if( !is_array($attr) ) $attr = (array) $attr;

    // we're generating an image tag, but there MAY be a default class. 
    // if one was defined, however, override it
    if( !isset($attr['class']) && !empty($field_css) ) 
      $attr['class'] = $field_css;

    // ok, put it together now
    if(count($attr)){
      $add_attr = NULL;
      foreach($attr as $k => $v){
        $add_attr .= sprintf('%s="%s" ',$k,$v);
      }
      $finalString = "<img src='".$field_value."' ".$add_attr." />";
    }else{
      $finalString = "<img src='".$field_value."' />";
    }
  }else{
    $finalString = $field_value;
  }
  return $finalString;
}

function aux_image($value,$params,$type = NULL){

  $md5_params = md5($params);

  $thumb_path = MF_CACHE_DIR.'th_'.$md5_params."_".$value;
  $thumb_url  = MF_CACHE_URL.'th_'.$md5_params."_".$value;
  $image_path = MF_FILES_DIR.$value;
  $name_image = $value;

  if($type == 'image_media'){
    $data = preg_split('/\//',$value);
    $thumb_path = MF_CACHE_DIR.'th_'.$md5_params."_".$data[count($data)-1];
    $thumb_url = MF_CACHE_URL.'th_'.$md5_params."_".$data[count($data)-1];
    $image_path = str_replace(WP_CONTENT_URL,WP_CONTENT_DIR,$value);
    $name_image = $data[count($data)-1];
  }

  if (file_exists($thumb_path)) {
    $value = $thumb_url;
  }else{
    //generate thumb
    $create_md5_filename = 'th_'.$md5_params."_".$name_image;
    $output_filename = MF_CACHE_DIR.$create_md5_filename;
    $final_filename = MF_CACHE_URL.$create_md5_filename;

    $default = array(
      'zc'  => 1,
      'w'   => 0,
      'h'   => 0,
      'q'   => 85,
      'src' => $image_path,
      'far' => false,
      'iar' => false
    );

    $size = @getimagesize($image_path);
    $defaults['w'] = $size[0];
    $defaults['h'] = $size[1];

    $params_image = explode("&",$params);

    foreach($params_image as $param){
      if($param){
        $p_image=explode("=",$param);
        $default[$p_image[0]] = $p_image[1];
      }
    }
    if( ($default['w'] > 0) && ($default['h'] == 0) ){
      $default['h'] = round( ($default['w']*$defaults['h']) / $defaults['w'] );
    }elseif( ($default['w'] == 0) && ($default['h'] > 0) ){
      $default['w'] = round( ($default['h']*$defaults['w']) / $defaults['h'] );
    }
	
    $MFthumb = MF_PATH.'/MF_thumb.php';
    require_once($MFthumb);
    $thumb = new mfthumb();

    if (is_wp35()) {
      $thumb_path = $thumb->image_resize35($default['src'], $default['w'], $default['h'], $default['zc'], $default['far'], $default['iar'], $output_filename, $default['q']);  
    }else{
        $thumb_path = $thumb->image_resize($default['src'], $default['w'], $default['h'], $default['zc'], $default['far'], $default['iar'], $output_filename, $default['q']);  
    }   
	
    if ( is_wp_error($thumb_path) ){
      return $thumb_path;
      return $thumb_path->get_error_message();
    }
    
    $value = $final_filename;
  }
  return $value;
}

function _processed_value($value, $type, $options = array(), $image_array = 0 ){
		
  if(is_serialized($options)){
    $options= unserialize( $options );
  }

  $result = '';
  switch($type){
    case 'audio':
    case 'file':
      if( !empty($value) ) $result = MF_FILES_URL . $value;
      break;
    case 'image': 
      if($image_array){
        if( !empty($value) ){
          $options = _processed_params($options);
          $result = array('original' => MF_FILES_URL . $value);
          if( empty($options) ){
            $result['thumb'] = $result['original'];
          }else{
            $result['thumb'] = aux_image($value,$options,$type);
            if ( is_wp_error($result['thumb']) ){
              $result['error'] = $result['thumb']->get_error_message();
              $result['thumb'] = '';
            }
          }
        }
      }else{
        if( !empty($value) ) $result = MF_FILES_URL . $value;
      }
      break;
    case 'image_alt': 
      if($image_array){
        if( !empty($value) ){
          unset($options['css_class']);
          $options = _processed_params($options);
          $result = array('original' => MF_FILES_URL . $value);
          if( empty($options) ){
            $result['thumb'] = $result['original'];
          }else{
            $result['thumb'] = aux_image($value,$options,$type);
            if ( is_wp_error($result['thumb']) ){
              $result['error'] = $result['thumb']->get_error_message();
              $result['thumb'] = '';
            }
          }
        }
      }else{
        if( !empty($value) ) $result = MF_FILES_URL . $value;
      }
      break;
    case 'checkbox':
      if ($value == '1')  $result = 1; else $result = 0; 
      break;
    case 'datepicker':
      if( !empty($value) ){
        $result = date($options['format'],strtotime($value)); 
      }
      break;
    case 'dropdown':
      $result = ($options['multiple'] == '0')? $value[0] : $value ;
      break;
    case 'image_media':
      if($image_array){
        if( !empty($value) ){
          unset($options['css_class']);
          $options = _processed_params($options);
          
          $data = wp_get_attachment_image_src($value,'original');
          $result = array('original' => $data[0]);
          if( empty($options) ){
            $result['thumb'] = $result['original'];
          }else{
            $result['thumb'] = aux_image($result['original'],$options,$type);
            if ( is_wp_error($result['thumb']) ){
              $result['error'] = $result['thumb']->get_error_message();
              $result['thumb'] = '';
            }
          }
        }
      }else{
        if( !empty($value) ){
          $data = wp_get_attachment_image_src($value,'original');
          $result = $data[0];
        }
      }
      
      break;
    case 'multiline':
      $result = apply_filters('the_content',$value);
      break;
    default:
      $result = $value; 
      break;
  }
  return $result;
}


function get_data( $field_name, $group_index=1, $field_index=1, $post_id ){
  global $wpdb;

  $field_name = str_replace(" ","_",$field_name);

  $sql = sprintf(
    "SELECT m.meta_id,w.meta_value,f.type,f.options,f.description,f.label " .
    "FROM %s m " .
    "JOIN %s w ON m.meta_id = w.meta_id " .
    "JOIN %s f ON m.field_name = f.name " .
    "WHERE m.post_id = %d AND m.field_name = '%s' AND m.group_count = %d AND m.field_count = %d ",
    MF_TABLE_POST_META,
    $wpdb->postmeta,
    MF_TABLE_CUSTOM_FIELDS,
    $post_id,
    $field_name,
    $group_index,
    $field_index
  );

  $result = $wpdb->get_row($sql,ARRAY_A);
  
  if( empty($result) ) return NULL;

  $result['options'] = unserialize($result['options']);

  if(is_serialized($result['meta_value'])){
    $result['meta_value'] = unserialize( $result['meta_value'] );
  }
  
  return $result;
}

function _resolve_linebreaks($data = NULL){
  $data = preg_replace(array("/\r\n/","/\r/","/\n/"),"\\n",$data);
  return $data;
}

function _processed_params($params = array()){
  
  $tmp_param = array();
  foreach($params as $p_k => $p_v){
    if( !empty($p_v) ){
      if( $p_k == 'max_height' ) $p_k ='h';
      if( $p_k == 'max_width' ) $p_k = 'w';
      if( $p_k == 'custom'){
        $tmp_param[] = $p_v;
      }else{
        $tmp_param[] = sprintf('%s=%s',$p_k,$p_v);
      }
    }
  }
  if( count($tmp_param) ){
    $field_param = implode('&',$tmp_param);
  }else{
    $field_param = '';
  }

  return $field_param;
}