Changeset 38015 for trunk/src/wp-includes/load.php

Timestamp:

07/08/2016 02:36:37 PM (9 years ago)

Author:

ocean90

Message:

Bootstrap: Enhance core's memory limit handling.

• Don't lower memory limit if the current limit is greater than WP_MAX_MEMORY_LIMIT.
• Set WP_MEMORY_LIMIT and WP_MAX_MEMORY_LIMIT to current limit if the memory_limit setting can't be changed at runtime.
• Use wp_convert_hr_to_bytes() when parsing the value of the memory_limit setting because it can be a shorthand or an integer value.
• Introduce wp_raise_memory_limit( $context ) to raise the PHP memory limit for memory intensive processes. This DRYs up some logic and includes the existing admin_memory_limit and image_memory_limit filters. The function can also be used for custom contexts, the {$context}_memory_limit filter allows to customize the limit.
• Introduce wp_is_ini_value_changeable( $setting ) to determine whether a PHP ini value is changeable at runtime.
• Remove a function_exists( 'memory_get_usage' ) check. Since PHP 5.2.1 support for memory limit is always enabled.

Related commits: [38011-38013]

Props jrf, A5hleyRich, swissspidy, ocean90.
Fixes #32075.

File:

• trunk/src/wp-includes/load.php (modified) (1 diff)

trunk/src/wp-includes/load.php

@@ -1003 +1003 @@
     return min( $bytes, PHP_INT_MAX );
 }
+
+/**
+ * Determines whether a PHP ini value is changeable at runtime.
+ *
+ * @since 4.6.0
+ *
+ * @link http://php.net/manual/en/function.ini-get-all.php
+ *
+ * @param string $setting The name of the ini setting to check.
+ * @return bool True if the value is changeable at runtime. False otherwise.
+ */
+function wp_is_ini_value_changeable( $setting ) {
+    static $ini_all;
+
+    if ( ! isset( $ini_all ) ) {
+        $ini_all = ini_get_all();
+    }
+
+    if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === $ini_all[ $setting ]['access'] || INI_USER === $ini_all[ $setting ]['access'] ) ) {
+        return true;
+    }
+
+    return false;
+}