string $data - The text to set or, if $isfile is TRUE a valid filename. An URL as argument is not allowed.
boolean $isfile - If TRUE, the content of given file $data is used as message text.
Table 52-1. Possible PEAR_Error values
|Error code||Error message||Reason||Solution|
|NULL||"File is not readable file_name"||The file was not found or the script has not enough rights to access the file.||Check the file name and path. Check user and file permissions.|
|NULL||"Could not open file_name"||The file is already opened and exclusivly locked by another application.||In the most cases a programm opens the file for writing. setHTMLBody() does no file locking, so this problem is not caused by competitve callings of this function.|