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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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227 | * manually without the `$quality` argument. |
228 | * |
229 | * set_quality() has priority over the filter. |
230 | * |
231 | * @since 3.5.0 |
232 | * |
233 | * @param int $quality Quality level between 1 (low) and 100 (high). |
234 | * @param string $mime_type Image mime type. |
235 | */ |
236 | $quality = apply_filters( 'wp_editor_set_quality', $this->default_quality, $this->mime_type ); |
237 |
|
238 | if ( 'image/jpeg' == $this->mime_type ) { |
239 | /** |
240 | * Filters the JPEG compression quality for backward-compatibility. |
241 | * |
242 | * Applies only during initial editor instantiation, or when set_quality() is run |
243 | * manually without the `$quality` argument. |
244 | * |
245 | * set_quality() has priority over the filter. |