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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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113 | $sizes[$s]['height'] = intval( $_wp_additional_image_sizes[$s]['height'] ); // For theme-added sizes |
114 | else |
115 | $sizes[$s]['height'] = get_option( "{$s}_size_h" ); // For default sizes set in options |
116 | if ( isset( $_wp_additional_image_sizes[$s]['crop'] ) ) |
117 | $sizes[$s]['crop'] = intval( $_wp_additional_image_sizes[$s]['crop'] ); // For theme-added sizes |
118 | else |
119 | $sizes[$s]['crop'] = get_option( "{$s}_crop" ); // For default sizes set in options |
120 | } |
121 |
|
122 | $sizes = apply_filters( 'intermediate_image_sizes_advanced', $sizes ); |
123 |
|
124 | foreach ($sizes as $size => $size_data ) { |
125 | $resized = image_make_intermediate_size( $file, $size_data['width'], $size_data['height'], $size_data['crop'] ); |
126 | if ( $resized ) |
127 | $metadata['sizes'][$size] = $resized; |
128 | } |
129 |
|
130 | // fetch additional metadata from exif/iptc |
131 | $image_meta = wp_read_image_metadata( $file ); |