Defines initial WordPress constants.
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 );
define( 'MONTH_IN_SECONDS', 30 * DAY_IN_SECONDS );
define( 'YEAR_IN_SECONDS', 365 * DAY_IN_SECONDS );
/**#@-*/
} | Version | Description |
|---|---|
| 3.0.0 | Introduced. |
© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_initial_constants