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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 |
|---|---|
| 1086 | ); |
| 1087 | |
| 1088 | /** |
| 1089 | * Filters the context in which wp_get_attachment_image() is used. |
| 1090 | * |
| 1091 | * @since 6.3.0 |
| 1092 | * |
| 1093 | * @param string $context The context. Default 'wp_get_attachment_image'. |
| 1094 | */ |
| 1095 | $context = apply_filters( 'wp_get_attachment_image_context', 'wp_get_attachment_image' ); |
| 1096 | |
| 1097 | $attr = wp_parse_args( $attr, $default_attr ); |
| 1098 | |
| 1099 | // Ensure that the `$width` doesn't overwrite an already valid user-provided width. |
| 1100 | if ( ! isset( $attr['width'] ) || ! is_numeric( $attr['width'] ) ) { |
| 1101 | $attr['width'] = $width; |
| 1102 | } |
| 1103 | |
| 1104 | // Ensure that the `$height` doesn't overwrite an already valid user-provided height. |