For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 34 and the first side effect is on line 13.
The PSR-1: Basic Coding Standard recommends that a file should either introduce
new symbols, that is classes, functions, constants or similar, or have side effects.
Side effects are anything that executes logic, like for example printing output,
changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state
of an application. It also promotes a cleaner style of programming and makes your code
less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the
PSR-1.
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use SESP\HookRegistry;
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/**
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* Extension SemanticExtraSpecialProperties - Adds some extra special properties to all pages.
* @defgroup SemanticExtraSpecialProperties Semantic Extra Special Properties
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*/
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if ( !defined( 'MEDIAWIKI' ) ) {
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die( 'This file is part of the SemanticExtraSpecialProperties extension, it is not a valid entry point.' );
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}
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if ( version_compare( $GLOBALS['wgVersion'], '1.25', '<' ) ) {
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die( '<b>Error:</b> This version of Semantic Extra Special Properties requires MediaWiki 1.25 or above.' );
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}
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if ( !defined( 'SMW_VERSION' ) ) {
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die( '<b>Error:</b> This version of Semantic Extra Special Properties requires <a href="http://www.semantic-mediawiki.org/wiki/Semantic_MediaWiki">Semantic MediaWiki</a> installed.<br />' );
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}
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if ( defined( 'SESP_VERSION' ) ) {
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// Do not initialize more than once.
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return 1;
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}
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SemanticExtraSpecialProperties::load();
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/**
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* @codeCoverageIgnore
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*/
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class SemanticExtraSpecialProperties {
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/**
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* @since 1.4
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*
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* @note It is expected that this function is loaded before LocalSettings.php
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* to ensure that settings and global functions are available by the time
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* the extension is activated.
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*/
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public static function load() {
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// Load DefaultSettings
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require_once __DIR__ . '/DefaultSettings.php';
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if ( is_readable( __DIR__ . '/vendor/autoload.php' ) ) {
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include_once __DIR__ . '/vendor/autoload.php';
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}
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// In case extension.json is being used, the the succeeding steps will
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// be handled by the ExtensionRegistry
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self::initExtension();
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// PHP 5.3
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// "Fatal error: Cannot access self:: when no class scope is active"
SemanticMediaWiki /
SemanticExtraSpecialProperties
Leo Wallentin
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.