43 lines
1.3 KiB
PHP
43 lines
1.3 KiB
PHP
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<?php
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/**
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* WordPress Post Image Template Functions.
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*
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* Support for post thumbnails
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* Themes function.php must call add_theme_support( 'post-thumbnails' ) to use these.
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*
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* @package WordPress
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* @subpackage Template
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*/
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function has_post_image( $post_id = NULL ) {
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global $id;
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$post_id = ( NULL === $post_id ) ? $id : $post_id;
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return !! get_post_image_id( $post_id );
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}
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function get_post_image_id( $post_id = NULL ) {
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global $id;
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$post_id = ( NULL === $post_id ) ? $id : $post_id;
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return get_post_meta( $post_id, '_thumbnail_id', true );
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}
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function the_post_image( $size = 'thumbnail', $attr = '' ) {
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echo get_the_post_image( NULL, $size, $attr );
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}
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function get_the_post_image( $post_id = NULL, $size = 'thumbnail', $attr = '' ) {
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global $id;
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$post_id = ( NULL === $post_id ) ? $id : $post_id;
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$post_image_id = get_post_image_id( $post_id );
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$size = apply_filters( 'post_image_size', $size );
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if ( $post_image_id ) {
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do_action( 'begin_fetch_post_image_html', $post_id, $post_image_id, $size ); // for "Just In Time" filtering of all of wp_get_attachment_image()'s filters
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$html = wp_get_attachment_image( $post_image_id, $size, false, $attr );
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do_action( 'end_fetch_post_image_html', $post_id, $post_image_id, $size );
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} else {
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$html = '';
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}
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return apply_filters( 'post_image_html', $html, $post_id, $post_image_id );
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}
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?>
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