Functions that are wrappers or custom implementations of PHP functions.
Certain PHP functions should not be used in Drupal. Instead, Drupal's replacement functions should be used.
For example, for improved or more secure UTF8-handling, or RFC-compliant handling of URLs in Drupal.
For ease of use and memorizing, all these wrapper functions use the same name as the original PHP function, but prefixed with "drupal_". Beware, however, that not all wrapper functions support the same arguments as the original functions.
You should always use these wrapper functions in your code.
$my_substring = substr($original_string, 0, 5);
$my_substring = drupal_substr($original_string, 0, 5);
||Registers a function for execution on shutdown.|
||Parses an array into a valid, rawurlencoded query string.|
||Parses a system URL string into an associative array suitable for url().|
||Attempts to set the PHP maximum execution time.|
||Converts an HTML-safe JSON string into its PHP equivalent.|
||Moves an uploaded file to a new location.|
||Sets the permissions on a file or directory.|
||Deletes a file.|
||Returns the absolute local filesystem path of a stream URI.|
||Gets the name of the directory from a given path.|
||Gets the filename from a given path.|
||Creates a directory using Drupal's default mode.|
||Removes a directory.|
||Creates a file with a unique filename in the specified directory.|
||Forcefully starts a session, preserving already set session data.|
||Called when an anonymous user becomes authenticated or vice-versa.|
||Prepare a new XML parser.|
||Count the amount of characters in a UTF-8 string. This is less than or equal to the byte count.|
||Uppercase a UTF-8 string.|
||Lowercase a UTF-8 string.|
||Capitalize the first letter of a UTF-8 string.|
||Cut off a piece of a string based on character indices and counts. Follows the same behavior as PHP's own substr() function.|
||Evaluates a string of PHP code.|
common.inc, line 11
- Common functions that many Drupal modules will need to reference.