php - How to ignore only warnings with a specific message? -

as workaround another issue set error handler only specific warning. should check whether warning starts string, , if not should hand warning on original handler.

what i've got far:

function filesize_for_url_ignoring_error_handler($severity, $message, $file, $line, $context) {     if (strpos($message, 'warning:  filesize(): stat failed https://') === 0) {         return;     }     restore_error_handler();     throw new errorexception($message, e_warning, $severity, $file, $line); }  set_error_handler('filesize_for_url_ignoring_error_handler', e_warning); $file = file_save($file); restore_error_handler(); 

however, there seems several problems:

• i can't override error handler single error type. i've tried passing e_error, ~e_warning, e_all , 0 error type set_error_handler, seems setting error handler given type removes error handlers other types. correct? can work around setting error handler error types.
• i don't know how handle warning original error handler if doesn't match expected message. throwing errorexception not right thing - results in full stacktrace , message not end in drupal watchdog log. running trigger_error instead doesn't work either - can see trigger called (using error_log) message doesn't end in watchdog log.

using drupal 7.56 , php 5.4.

90% solved writing custom error handler calls original error handler if message doesn't match:

function filesize_for_url_ignoring_error_handler($severity, $message, $file, $line, $context) {     global $originalerrorhandler;     if (strpos($message, 'filesize(): stat failed https://') !== 0) {         $originalerrorhandler($severity, $message, $file, $line, $context);     } }  class […] {     public function […] {         $originalerrorhandler = set_error_handler('filesize_for_url_ignoring_error_handler');         $file = file_save($file);         restore_error_handler();     } } 

now messages not start "filesize(): stat failed https://" still logged in file_save. issue watchdog log shows message originating in filesize_for_url_ignoring_error_handler, won't mark solved yet in case knows how fix (and ideally avoid using global variable).