apply_filters( ‘img_caption_shortcode’, string $output, array $attr, string $content )

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   Steven Lin 5 years ago

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   Example migrated from Codex:

   add_filter( 'img_caption_shortcode', 'my_img_caption_shortcode', 10, 3 );
   
   function my_img_caption_shortcode( $output, $attr, $content ) {
   	$attr = shortcode_atts( array(
   		'id'      => '',
   		'align'   => 'alignnone',
   		'width'   => '',
   		'caption' => ''
   	), $attr );
   
   	if ( 1 > (int) $attr['width'] || empty( $attr['caption'] ) ) {
   		return '';
   	}
   
   	if ( $attr['id'] ) {
   		$attr['id'] = 'id="' . esc_attr( $attr['id'] ) . '" ';
   	}
   
   	return '<div ' . $attr['id']
   	. 'class="wp-caption ' . esc_attr( $attr['align'] ) . '" '
   	. 'style="max-width: ' . ( 10 + (int) $attr['width'] ) . 'px;">'
   	. do_shortcode( $content )
   	. '<p class="wp-caption-text">' . $attr['caption'] . '</p>'
   	. '</div>';
   
   }