Mysql_connect Error Handling
Contents |
and Objects Namespaces Errors Exceptions Generators References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as call to undefined function mysql_connect() an Apache module Session Security Filesystem Security Database Security Error Reporting Using Register mysql_connect deprecated Globals User Submitted Data Magic Quotes Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with fatal error: call to undefined function mysql_connect() XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Safe Mode Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication
Php Mysqli Connect
Services Command Line Specific Extensions Compression and Archive Extensions Credit Card Processing Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type mysql_select_db Related Extensions Web Services Windows Only Extensions XML Manipulation Keyboard Shortcuts? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search(current page) / Focus search box mysql_create_db » « mysql_close PHP Manual Function Reference Database Extensions Vendor Specific Database Extensions MySQL MySQL (Original) MySQL Functions Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Korean Romanian Russian Spanish Turkish Other Edit Report a Bug mysql_connect (PHP 4, PHP 5)mysql_connect — Open a connection to a MySQL Server Warning This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include: mysqli_connect() PDO::__construct() Description resource mysql_connect ([ string $server = ini_get("mysql.default_host") [, string $username = ini_get("mysql.default_user") [, string $password = ini_get("mysql.default_password") [, bool $new_link = false [, int $client_flags = 0 ]]]]] ) Opens or reuses a connection to a MySQL se
try { $link = mysql_connect($host, $name, $pass); $db = mysql_select_db($db, $link); } catch (Exception $e) { echo ('An uncaught error: call to undefined function mysql_connect() error has occured ('.$e.'): '.mysql_errno()); } } If I turn on error
Php Mysql Query
reporting, i get connection errors, but if i turn off error reporting, i get nothing. Why doesn't this work?
Fatal Error: Uncaught Error: Call To Undefined Function Mysql_connect()
taliesinnz 2007-10-24 04:00:22 UTC #2 The MySQL extension does not throw exceptions.. You could work around this by using try { $db = mysql_connect( ... ) or throw new Exception('Error Connecting'); http://php.net/manual/en/function.mysql-connect.php mysql_select_db($db, $link) or throw new Expection('Cant Select DB'); } catch( Exception $e ) { echo '...'; } or you can use the PDO MYSQL Extensionhttp://nz2.php.net/manual/en/ref.pdo.php wonshikee 2007-10-24 04:05:08 UTC #3 or throw new Exception('Error Connecting'); Ah I see, thank you very much! wonshikee 2007-10-24 04:07:35 UTC #4 Hmm I am getting an error.. Parse error: syntax error, unexpected T_THROW $link = mysql_connect($this->host, https://www.sitepoint.com/community/t/try-catch-question/3541 $this->name, $this->pass) or throw new Exception('Cannot connect to MySQL');mysql_select_db($this->db, $link) libranet 2007-10-24 05:35:08 UTC #5 wonshikee said: Hmm I am getting an error.. Parse error: syntax error, unexpected T_THROW $link = mysql_connect($this->host, $this->name, $this->pass) or throw new Exception('Cannot connect to MySQL');mysql_select_db($this->db, $link) try this:$link = mysql_connect($this->host, $this->name, $this->pass);if(!$link) { throw new Exception('Cannot connect to MySQL');} logic_earth 2007-10-24 05:48:43 UTC #6 $con = mysql_connect(); # How important is the connection to the database? Show the application take # a nose dive if it cannot connect? One needs to weight the options of error handling. if ($con === false) { $error = 'Failed to connect to the MySQL database. (MySQL Error Code: %s)'; $error = sprintf($error, mysql_errno()); # The connection is very important: trigger_error($error, E_USER_ERROR); # Important but not that important: trigger_error($error, E_USER_WARNING); # And not important at all: trigger_error($error, E_USER_NOTICE); # I recommend that a DB error page be display if this goes bad. } Throwing exceptions in a try catch block just looks messy and fugly to me.Maybe you should think about using PDO or Mysqli kyberfabrikken 2007-10-24 08:30:03 UTC #7 Just install a custom
Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. help with try() catch() Started by https://forums.phpfreaks.com/topic/203413-help-with-try-catch/ otuatail, May 31 2010 10:16 AM Please log in to reply 17 replies http://www.w3schools.com/php/func_mysqli_connect.asp to this topic #1 otuatail otuatail Advanced Member Members 947 posts Posted 31 May 2010 - 10:16 AM Hi. I have never tred this before. mysql_connect() generates a visinle error even if i use or die() What I have at the moment is any ideas on this. It would be better if I can get an error telling me if it was mysql_connect() OR mysql_select_db() that caused the error. Desmond. call to undefined Back to top #2 Mchl Mchl Advanced Member Staff Alumni 8,507 posts LocationHigh Memory Area Posted 31 May 2010 - 10:21 AM try { if(!$link = mysql_connect($host, $user, $pass)) { throw new Exception("Can't connect to server: ".mysql_error()); } if(!$database = mysql_select_db ($data, $link)) { throw new Exception("Can't select database: ".mysql_error()); } } catch (Exception $e) { echo "Caught exception: ". $e->getMessage(); } NetBeans fanatic | ExtJS masochist | C++ denier PHP4 & MySQL4 are no longer supported. PHPFreaks Tutorials | PHP Debugging: A Beginner's guide | PHP Security Tutorial || How To Ask Questions The Smart Way Flingbits tutorials | Class Autoloading Back to top #3 otuatail otuatail Advanced Member Members 947 posts Posted 31 May 2010 - 10:37 AM Hi. Sorry this dosn't work. Get this on a web pageWarning: mysql_connect() [function.mysql-connect]: Access denied for user: 'john@255.255.255.255' (Using password: YES) in /home/fhlinux190/d/des.co.uk/user/htdocs/errorhandeler2.php on line 9Caught exception: Can't connect to server: Access denied for user: 'john@255.255.255.255' (Using password: YES)This is what I want to stop. This would expose all my database information (I have changed the details here. Back to top #4
Learn Bootstrap Learn Graphics Learn Icons Learn How To JavaScript Learn JavaScript Learn jQuery Learn jQueryMobile Learn AppML Learn AngularJS Learn JSON Learn AJAX Server Side Learn SQL Learn PHP Learn ASP Web Building Web Templates Web Statistics Web Certificates XML Learn XML Learn XML AJAX Learn XML DOM Learn XML DTD Learn XML Schema Learn XSLT Learn XPath Learn XQuery × HTML HTML Tag Reference HTML Event Reference HTML Color Reference HTML Attribute Reference HTML Canvas Reference HTML SVG Reference Google Maps Reference CSS CSS Reference CSS Selector Reference W3.CSS Reference Bootstrap Reference Icon Reference JavaScript JavaScript Reference HTML DOM Reference jQuery Reference jQuery Mobile Reference AngularJS Reference XML XML Reference XML Http Reference XSLT Reference XML Schema Reference Charsets HTML Character Sets HTML ASCII HTML ANSI HTML Windows-1252 HTML ISO-8859-1 HTML Symbols HTML UTF-8 Server Side PHP Reference SQL Reference ASP Reference × HTML/CSS HTML Examples CSS Examples W3.CSS Examples Bootstrap Examples JavaScript JavaScript Examples HTML DOM Examples jQuery Examples jQuery Mobile Examples AngularJS Examples AJAX Examples XML XML Examples XSLT Examples XPath Examples XML Schema Examples SVG Examples Server Side PHP Examples ASP Examples Quizzes HTML Quiz CSS Quiz JavaScript Quiz Bootstrap Quiz jQuery Quiz PHP Quiz SQL Quiz XML Quiz × PHP Tutorial PHP HOME PHP Intro PHP Install PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP While Loops PHP For Loops PHP Functions PHP Arrays PHP Sorting Arrays PHP Superglobals PHP Forms PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete PHP Advanced PHP Arrays Multi PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Error Handling PHP Exception MySQL Database MySQL Database MySQL Connect MySQL Create DB