1: <?php
  2: 
  3: /**
  4:  * Get post or page id from a object.
  5:  *
  6:  * @param  mixed $post_id
  7:  *
  8:  * @return int
  9:  */
 10: function papi_get_post_id( $post_id = null ) {
 11:     if ( is_object( $post_id ) && isset( $post_id->ID ) ) {
 12:         return $post_id->ID;
 13:     }
 14: 
 15:     if ( is_numeric( $post_id ) && is_string( $post_id ) && $post_id !== '0' ) {
 16:         return intval( $post_id );
 17:     }
 18: 
 19:     if ( is_null( $post_id ) || intval( $post_id ) === 0 ) {
 20:         if ( isset( $_POST['action'] ) ) {
 21:             if ( $_POST['action'] === 'query-attachments' && isset( $_POST['query']['item'] ) ) {
 22:                 return intval( $_POST['query']['item'] );
 23:             }
 24:         }
 25: 
 26:         if ( get_post() ) {
 27:             return get_the_ID();
 28:         }
 29: 
 30:         if ( $value = papi_get_qs( 'post' ) ) {
 31:             return is_array( $value ) ? 0 : intval( $value );
 32:         }
 33: 
 34:         if ( $value = papi_get_qs( 'page_id' ) ) {
 35:             return intval( $value );
 36:         }
 37: 
 38:         return intval( $post_id );
 39:     }
 40: 
 41:     return intval( $post_id );
 42: }
 43: 
 44: /**
 45:  * Get post parent id.
 46:  *
 47:  * @return int
 48:  */
 49: function papi_get_parent_post_id() {
 50:     return intval( papi_get_qs( 'post_parent' ) );
 51: }
 52: 
 53: /**
 54:  * Get WordPress post type in various ways
 55:  *
 56:  * @return string
 57:  */
 58: function papi_get_post_type() {
 59:     if ( $post_type = papi_get_or_post( 'post_type' ) ) {
 60:         return $post_type;
 61:     }
 62: 
 63:     $post_id = papi_get_post_id();
 64: 
 65:     if ( $post_id !== 0 ) {
 66:         return strtolower( get_post_type( $post_id ) );
 67:     }
 68: 
 69:     $page = papi_get_qs( 'page' );
 70: 
 71:     if ( strpos( strtolower( $page ), 'papi-add-new-page,' ) !== false ) {
 72:         $exploded = explode( ',', $page );
 73: 
 74:         if ( empty( $exploded[1] ) ) {
 75:             return '';
 76:         }
 77: 
 78:         return $exploded[1];
 79:     }
 80: 
 81:     // If only `post-new.php` without any querystrings
 82:     // it would be the post post type.
 83:     $req_uri  = $_SERVER['REQUEST_URI'];
 84:     $exploded = explode( '/', $req_uri );
 85:     $last     = end( $exploded );
 86: 
 87:     if ( $last === 'post-new.php' ) {
 88:         return 'post';
 89:     }
 90: 
 91:     return '';
 92: }
 93: 
 94: /**
 95:  * Get post type label.
 96:  *
 97:  * @param  string $post_type
 98:  * @param  string $label
 99:  * @param  string $default
100:  *
101:  * @return string
102:  */
103: function papi_get_post_type_label( $post_type, $label, $default = '' ) {
104:     if ( ! post_type_exists( $post_type ) ) {
105:         return $default;
106:     }
107: 
108:     $post_type_obj = get_post_type_object( $post_type );
109: 
110:     return $post_type_obj->labels->$label;
111: }
112: