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mysqli_query($this->db_link, $query) or die(mysqli_error($this->db_link)); # mysqli_query($link,$query) returns 0 if there's an error. # mysqli_error($link) returns a string with the last error message
10 kwi 2010 · You should definitely use mysql_error() if you get a query failing. It's not always terrible helpful, particularly if you have a large query. But it may help you to diagnose what the problem may be.
Definition and Usage. The error / mysqli_error () function returns the last error description for the most recent function call, if any. Syntax. Object oriented style: $mysqli -> error. Procedural style: mysqli_error (connection) Parameter Values. Technical Details. Example - Procedural Oriented style.
A string representing the debugging operation to perform. The debug control string is a sequence of colon separated fields as follows: <field_1>:<field_2>:<field_N>. Each field consists of a mandatory flag character followed by an optional , and comma separated list of modifiers: flag[,modifier,modifier,...,modifier] Recognized Flag Characters.
If mysqli error reporting is enabled (MYSQLI_REPORT_ERROR) and the requested operation fails, a warning is generated. If, in addition, the mode is set to MYSQLI_REPORT_STRICT , a mysqli_sql_exception is thrown instead.
This example prompts an error in debugmode (variable $b_debugmode ). An e-mail with the error will be sent to the site operator otherwise. The script writes a log file in directory ( in this case /log ) as well. The system is vulnerable when database/query information is prompted to visitors.
By default, PHP sends an error log to the server's logging system or a file, depending on how the error_log configuration is set in the php.ini file. By using the error_log() function you can send error logs to a specified file or a remote destination.
