Code Modernization: Replace dirname( __FILE__ ) calls with __DIR__ magic constant.
This avoids the performance overhead of the function call every time `dirname( __FILE__ )` was used instead of `__DIR__`. This commit also includes: * Removing unnecessary parentheses from `include`/`require` statements. These are language constructs, not function calls. * Replacing `include` statements for several files with `require_once`, for consistency: * `wp-admin/admin-header.php` * `wp-admin/admin-footer.php` * `wp-includes/version.php` Props ayeshrajans, desrosj, valentinbora, jrf, joostdevalk, netweb. Fixes #48082. Built from https://develop.svn.wordpress.org/trunk@47198 git-svn-id: http://core.svn.wordpress.org/trunk@46998 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@@ -9,9 +9,9 @@
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define( 'WP_INSTALLING', true );
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/** Sets up the WordPress Environment. */
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require( dirname( __FILE__ ) . '/wp-load.php' );
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require __DIR__ . '/wp-load.php';
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require( dirname( __FILE__ ) . '/wp-blog-header.php' );
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require __DIR__ . '/wp-blog-header.php';
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if ( ! is_multisite() ) {
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wp_redirect( wp_registration_url() );
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