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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 |
---|---|
504 | * |
505 | * @since 2.5.0 |
506 | * @since 4.4.0 The `$iptc` parameter was added. |
507 | * |
508 | * @param array $meta Image meta data. |
509 | * @param string $file Path to image file. |
510 | * @param int $sourceImageType Type of image. |
511 | * @param array $iptc IPTC data. |
512 | */ |
513 | return apply_filters( 'wp_read_image_metadata', $meta, $file, $sourceImageType, $iptc ); |
514 |
|
515 | } |
516 |
|
517 | /** |
518 | * Validate that file is an image. |
519 | * |
520 | * @since 2.5.0 |
521 | * |
522 | * @param string $path File path to test if valid image. |