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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 182 | * @since 2.6.0 |
| 183 | * @since 4.3.0 Introduced the `$href` parameter. |
| 184 | * @since 4.5.0 Introduced the `$media` parameter. |
| 185 | * |
| 186 | * @param string $html The link tag for the enqueued style. |
| 187 | * @param string $handle The style's registered handle. |
| 188 | * @param string $href The stylesheet's source URL. |
| 189 | * @param string $media The stylesheet's media attribute. |
| 190 | */ |
| 191 | $tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle, $href, $media); |
| 192 | if ( 'rtl' === $this->text_direction && isset($obj->extra['rtl']) && $obj->extra['rtl'] ) { |
| 193 | if ( is_bool( $obj->extra['rtl'] ) || 'replace' === $obj->extra['rtl'] ) { |
| 194 | $suffix = isset( $obj->extra['suffix'] ) ? $obj->extra['suffix'] : ''; |
| 195 | $rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $obj->src , $ver, "$handle-rtl" )); |
| 196 | } else { |
| 197 | $rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" ); |
| 198 | } |
| 199 | |
| 200 | /** This filter is documented in wp-includes/class.wp-styles.php */ |
| 201 | $rtl_tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle, $rtl_href, $media ); |
| 202 | |
| 203 | if ( $obj->extra['rtl'] === 'replace' ) { |
| 204 | $tag = $rtl_tag; |
| 205 | } else { |
| 206 | $tag .= $rtl_tag; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | $conditional_pre = $conditional_post = ''; |