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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 |
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195 | * @param string $size Optional. Default is 'medium'. |
196 | * @return string HTML IMG element for given image attachment |
197 | */ |
198 | function get_image_tag($id, $alt, $title, $align, $size='medium') { |
199 |
|
200 | list( $img_src, $width, $height ) = image_downsize($id, $size); |
201 | $hwstring = image_hwstring($width, $height); |
202 |
|
203 | $class = 'align' . esc_attr($align) .' size-' . esc_attr($size) . ' wp-image-' . $id; |
204 | $class = apply_filters('get_image_tag_class', $class, $id, $align, $size); |
205 |
|
206 | $html = '<img src="' . esc_attr($img_src) . '" alt="' . esc_attr($alt) . '" title="' . esc_attr($title).'" '.$hwstring.'class="'.$class.'" />'; |
207 |
|
208 | $html = apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size ); |
209 |
|
210 | return $html; |
211 | } |
212 |
|
213 | /** |