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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 |
|---|---|
| 372 | return new WP_Error('resize_path_invalid', __( 'Resize path invalid' )); |
| 373 | } |
| 374 | elseif ( $orig_type == IMAGETYPE_PNG ) { |
| 375 | if (!imagepng( $newimage, $destfilename ) ) |
| 376 | return new WP_Error('resize_path_invalid', __( 'Resize path invalid' )); |
| 377 | } |
| 378 | else { |
| 379 | // all other formats are converted to jpg |
| 380 | $destfilename = "{$dir}/{$name}-{$suffix}.jpg"; |
| 381 | if (!imagejpeg( $newimage, $destfilename, apply_filters( 'jpeg_quality', $jpeg_quality, 'image_resize' ) ) ) |
| 382 | return new WP_Error('resize_path_invalid', __( 'Resize path invalid' )); |
| 383 | } |
| 384 | |
| 385 | imagedestroy( $newimage ); |
| 386 | |
| 387 | // Set correct file permissions |
| 388 | $stat = stat( dirname( $destfilename )); |
| 389 | $perms = $stat['mode'] & 0000666; //same permissions as parent folder, strip off the executable bits |
| 390 | @ chmod( $destfilename, $perms ); |