Get_post_custom () function use parsing in WordPress development, wordpressgetpost_php Tutorial

Get_post_custom () function use parsing in WordPress development, Wordpressgetpost

As with Get_post_meta (), the custom field used to return the article is worth a function, except that the Get_post_custom () function is simpler to use, and you don't even need to set any parameters if you use it in a loop.

In fact, the basic implementation of the Get_post_custom () function is similar to the Get_post_meta ()

Get_post_custom () use

Get_post_custom ($postid);

Accept only one parameter
$postid article ID;

Example Demo

if (Have_posts ()):  while (Have_posts ()): The_post ();   Var_dump (Get_post_custom ());  Endwhile;   endif

The result of the output is as follows: (if the following fields are set)

Array (4) {["_edit_last"]=>array (1) {[0]=>string (1) "1"}["_edit_lock"]=>array (1) {[0]=>string (12)] 1342451729:1 "}[" _thumbnail_id "]=>array (1) {[0]=>string (3)" 228 "}[" Xzmeta "]=>array (2) {[0]=>string (3)] Xz1 "[1]=>string (3)" Xz2 "}}

Get_post_custom_values and Get_post_custom_keys

Because custom fields are divided into key values (keys) and custom field values, sometimes we need to get these two values separately, so get_post_custom_values and Get_post_custom_ are derived from WordPress. Keys two functions, as for the meaning, I really did not find out how much significance, in addition to the bulk deletion of custom fields when there is a certain use, I really did not think of any place to use, perhaps in a vast CMS theme will have a very heavy cast significance.

Before writing to the Get_post_custom function and the Get_post_meta function, privately think, anyway, custom field related functions are not many, so just tidy up a bit, simply put the custom field related functions are written, of course, does not include some basic implementation code of the function.
The get_post_custom_values is used to get the value of the specified custom field for the current article and is returned as an array.

while (Have_posts ()): The_post ();   Var_dump (get_post_custom_values (' Xzmeta ')); Endwhile;   endif

Will generally return the following results

(If the custom field has settings)

Array (2) {[0]=>string (3) "Xz1" [1]=>string (3) "XZ2"}

Get_post_custom_keys is used to get the key values for all custom fields in the current article.

if (Have_posts ()): while (Have_posts ()): The_post ();   Var_dump (Get_post_custom_keys ()); Endwhile;  endif

The following results are generally obtained:
(If the custom field has settings)

Array (4) {[0]=>string] "_edit_last" [1]=>string (Ten) "_edit_lock" [2]=>string] _thumbnail_id [3]=> String (6) "Xzmeta"}

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