Summery Summery
Defines initial WordPress constants.
Syntax Syntax
Source Source
File: wp-includes/default-constants.php
function wp_initial_constants() { global $blog_id; /**#@+ * Constants for expressing human-readable data sizes in their respective number of bytes. * * @since 4.4.0 */ define( 'KB_IN_BYTES', 1024 ); define( 'MB_IN_BYTES', 1024 * KB_IN_BYTES ); define( 'GB_IN_BYTES', 1024 * MB_IN_BYTES ); define( 'TB_IN_BYTES', 1024 * GB_IN_BYTES ); /**#@-*/ // Start of run timestamp. if ( ! defined( 'WP_START_TIMESTAMP' ) ) { define( 'WP_START_TIMESTAMP', microtime( true ) ); } $current_limit = ini_get( 'memory_limit' ); $current_limit_int = wp_convert_hr_to_bytes( $current_limit ); // Define memory limits. if ( ! defined( 'WP_MEMORY_LIMIT' ) ) { if ( false === wp_is_ini_value_changeable( 'memory_limit' ) ) { define( 'WP_MEMORY_LIMIT', $current_limit ); } elseif ( is_multisite() ) { define( 'WP_MEMORY_LIMIT', '64M' ); } else { define( 'WP_MEMORY_LIMIT', '40M' ); } } if ( ! defined( 'WP_MAX_MEMORY_LIMIT' ) ) { if ( false === wp_is_ini_value_changeable( 'memory_limit' ) ) { define( 'WP_MAX_MEMORY_LIMIT', $current_limit ); } elseif ( -1 === $current_limit_int || $current_limit_int > 268435456 /* = 256M */ ) { define( 'WP_MAX_MEMORY_LIMIT', $current_limit ); } else { define( 'WP_MAX_MEMORY_LIMIT', '256M' ); } } // Set memory limits. $wp_limit_int = wp_convert_hr_to_bytes( WP_MEMORY_LIMIT ); if ( -1 !== $current_limit_int && ( -1 === $wp_limit_int || $wp_limit_int > $current_limit_int ) ) { ini_set( 'memory_limit', WP_MEMORY_LIMIT ); } if ( ! isset( $blog_id ) ) { $blog_id = 1; } if ( ! defined( 'WP_CONTENT_DIR' ) ) { define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' ); // No trailing slash, full paths only - WP_CONTENT_URL is defined further down. } // Add define( 'WP_DEBUG', true ); to wp-config.php to enable display of notices during development. if ( ! defined( 'WP_DEBUG' ) ) { if ( 'development' === wp_get_environment_type() ) { define( 'WP_DEBUG', true ); } else { define( 'WP_DEBUG', false ); } } // Add define( 'WP_DEBUG_DISPLAY', null ); to wp-config.php to use the globally configured setting // for 'display_errors' and not force errors to be displayed. Use false to force 'display_errors' off. if ( ! defined( 'WP_DEBUG_DISPLAY' ) ) { define( 'WP_DEBUG_DISPLAY', true ); } // Add define( 'WP_DEBUG_LOG', true ); to enable error logging to wp-content/debug.log. if ( ! defined( 'WP_DEBUG_LOG' ) ) { define( 'WP_DEBUG_LOG', false ); } if ( ! defined( 'WP_CACHE' ) ) { define( 'WP_CACHE', false ); } // Add define( 'SCRIPT_DEBUG', true ); to wp-config.php to enable loading of non-minified, // non-concatenated scripts and stylesheets. if ( ! defined( 'SCRIPT_DEBUG' ) ) { if ( ! empty( $GLOBALS['wp_version'] ) ) { $develop_src = false !== strpos( $GLOBALS['wp_version'], '-src' ); } else { $develop_src = false; } define( 'SCRIPT_DEBUG', $develop_src ); } /** * Private */ if ( ! defined( 'MEDIA_TRASH' ) ) { define( 'MEDIA_TRASH', false ); } if ( ! defined( 'SHORTINIT' ) ) { define( 'SHORTINIT', false ); } // Constants for features added to WP that should short-circuit their plugin implementations. define( 'WP_FEATURE_BETTER_PASSWORDS', true ); /**#@+ * Constants for expressing human-readable intervals * in their respective number of seconds. * * Please note that these values are approximate and are provided for convenience. * For example, MONTH_IN_SECONDS wrongly assumes every month has 30 days and * YEAR_IN_SECONDS does not take leap years into account. * * If you need more accuracy please consider using the DateTime class (https://www.php.net/manual/en/class.datetime.php). * * @since 3.5.0 * @since 4.4.0 Introduced `MONTH_IN_SECONDS`. */ define( 'MINUTE_IN_SECONDS', 60 ); define( 'HOUR_IN_SECONDS', 60 * MINUTE_IN_SECONDS ); define( 'DAY_IN_SECONDS', 24 * HOUR_IN_SECONDS ); define( 'WEEK_IN_SECONDS', 7 * DAY_IN_SECONDS );
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Changelog Changelog
Version | Description |
---|---|
3.0.0 | Introduced. |