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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1594 | * @since 3.7.0 |
| 1595 | * |
| 1596 | * @see img_caption_shortcode() |
| 1597 | * |
| 1598 | * @param int $width Width of the caption in pixels. To remove this inline style, |
| 1599 | * return zero. |
| 1600 | * @param array $atts Attributes of the caption shortcode. |
| 1601 | * @param string $content The image element, possibly wrapped in a hyperlink. |
| 1602 | */ |
| 1603 | $caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content ); |
| 1604 | |
| 1605 | $style = ''; |
| 1606 | if ( $caption_width ) { |
| 1607 | $style = 'style="width: ' . (int) $caption_width . 'px" '; |
| 1608 | } |
| 1609 | |
| 1610 | if ( $html5 ) { |
| 1611 | $html = sprintf( |
| 1612 | '<figure %s%s%sclass="%s">%s%s</figure>', |