post_meta でも、transient API みたいに有効期限付きに出来たら良いのにと思っていたあなたに
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| <?php | |
| /** | |
| * Delete a post meta transient. | |
| */ | |
| function delete_post_meta_transient( $post_id, $transient, $value = null ) { | |
| global $_wp_using_ext_object_cache; | |
| $post_id = (int) $post_id; | |
| do_action( 'delete_post_meta_transient_' . $transient, $post_id, $transient ); | |
| if ( $_wp_using_ext_object_cache ) { | |
| $result = wp_cache_delete( "{$transient}–{$post_id}", "post_meta_transient-{$post_id}" ); | |
| } else { | |
| $meta_timeout = '_transient_timeout_' . $transient; | |
| $meta = '_transient_' . $transient; | |
| $result = delete_post_meta( $post_id, $meta, $value ); | |
| if ( $result ) | |
| delete_post_meta( $post_id, $meta_timeout, $value ); | |
| } | |
| if ( $result ) | |
| do_action( 'deleted_post_meta_transient', $transient, $post_id, $transient ); | |
| return $result; | |
| } | |
| /** | |
| * Get the value of a post meta transient. | |
| */ | |
| function get_post_meta_transient( $post_id, $transient ) { | |
| global $_wp_using_ext_object_cache; | |
| $post_id = (int) $post_id; | |
| if (has_filter('pre_post_meta_transient_' . $transient)) { | |
| $pre = apply_filters( 'pre_post_meta_transient_' . $transient, $post_id, $transient ); | |
| if ( false !== $pre ) | |
| return $pre; | |
| } | |
| if ( $_wp_using_ext_object_cache ) { | |
| $value = wp_cache_get( "{$transient}–{$post_id}", "post_meta_transient-{$post_id}" ); | |
| } else { | |
| $meta_timeout = '_transient_timeout_' . $transient; | |
| $meta = '_transient_' . $transient; | |
| $value = get_post_meta( $post_id, $meta, true ); | |
| if ( $value && ! defined( 'WP_INSTALLING' ) ) { | |
| if ( get_post_meta( $post_id, $meta_timeout, true ) < time() ) { | |
| delete_post_meta_transient( $post_id, $transient ); | |
| return false; | |
| } | |
| } | |
| } | |
| return | |
| has_filter('post_meta_transient_' . $transient) | |
| ? apply_filters( 'post_meta_transient_' . $transient, $value, $post_id ) | |
| : $value; | |
| } | |
| /** | |
| * Set/update the value of a post meta transient. | |
| */ | |
| function set_post_meta_transient( $post_id, $transient, $value, $expiration = 0 ) { | |
| global $_wp_using_ext_object_cache; | |
| $post_id = (int) $post_id; | |
| delete_post_meta_transient( $post_id, $transient ); | |
| if (has_filter('pre_set_post_meta_transient_' . $transient)) | |
| $value = apply_filters( 'pre_set_post_meta_transient_' . $transient, $value, $post_id, $transient ); | |
| if ( $_wp_using_ext_object_cache ) { | |
| $result = wp_cache_set( "{$transient}–{$post_id}", $value, "post_meta_transient-{$post_id}", $expiration ); | |
| } else { | |
| $meta_timeout = '_transient_timeout_' . $transient; | |
| $meta = '_transient_' . $transient; | |
| if ( $expiration ) { | |
| add_post_meta( $post_id, $meta_timeout, time() + $expiration, true ); | |
| } | |
| $result = add_post_meta( $post_id, $meta, $value, true ); | |
| } | |
| if ( $result ) { | |
| do_action( 'set_post_meta_transient_' . $transient, $post_id, $transient ); | |
| do_action( 'setted_post_meta_transient', $transient, $post_id, $transient ); | |
| } | |
| return $result; | |
| } |
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