Mysql Error Display Php
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 an Apache module php mysqli error Session Security Filesystem Security Database Security Error Reporting Using Register Globals User Submitted
Php Mysql Error Handling
Data Magic Quotes Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file
Php Mysql Query Error
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 Services Command Line Specific Extensions
Or Die Mysql Error
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 Related Extensions Web Services Windows Only Extensions mysql_query error 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_escape_string » « mysql_errno 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_error (PHP 4, PHP 5)mysql_error — Returns the text of the error message from previous MySQL operation 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_error() PDO::errorInfo() Description string mysql_error ([ resource $link_identifier = NULL ] ) Returns the error text from the last MySQL function. Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_error() to retrieve the error text. Note that this function only returns the error text
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this mysqli_query error site About Us Learn more about Stack Overflow the company Business Learn die(mysql_error()) more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question i cannot select mysql database x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up how http://php.net/manual/en/function.mysql-error.php to display MySql error in php up vote 14 down vote favorite In PHP, I am trying to execute a long MySql query that depends on the user input. However, my query fails with the following message, "Query Failed". Actually I have printed this message whenever the query fails but I am having hard time looking for the reason behind this failure. Unfortunately, I http://stackoverflow.com/questions/12227626/how-to-display-mysql-error-in-php couldn't find it because the error is not specified on the web page. My question is, is there any way to display the error message that caused the failure on the web page. Thank you. Here's my code, $from= "Findings"; $where=""; if($service!= null) { $from = $from . ", ServiceType_Lookup"; $where= "Findings.ServiceType_ID= ServiceType_Lookup.ServiceType_ID AND ServiceType_Name= ". $service; if($keyword!= null) $where= $where . " AND "; } if( $keyword != null) { $where= $where . "Finding_ID LIKE '%$keyword%' OR ServiceType_ID LIKE '%$keyword%' OR Title LIKE '%$keyword%' OR RootCause_ID LIKE '%$keyword%' OR RiskRating_ID LIKE '%$keyword%' OR Impact_ID LIKE '%$keyword%' OR Efforts_ID LIKE '%$keyword%' OR Likelihood_ID LIKE '%$keyword%' OR Finding LIKE '%$keyword%' OR Implication LIKE '%$keyword%' OR Recommendation LIKE '%$keyword%' OR Report_ID LIKE '%$keyword%'"; } $query = "SELECT Finding_ID, ServiceType_ID, Title, RootCause_ID, RiskRating_ID, Impact_ID, Efforts_ID, Likelihood_ID, Finding, Implication, Recommendation, Report_ID FROM ".$from . " WHERE " . $where; echo "wala 2eshiq"; $this->result = $this->db_link->query($query); if (!$this->result) { printf("Query failed: %s\n", mysqli_connect_error()); exit; } $r = mysqli_query($this->db_link, $query); if($r==false) printf("error: %s\n", mysqli_errno($this->db_link)); php mysql share|improve this question asked Sep 1 '12 at 12:16 Traveling Salesman 56131640 You can just use:
Learn Bootstrap Learn Graphics Learn Icons Learn How To JavaScript Learn JavaScript Learn jQuery Learn jQueryMobile Learn AppML http://www.w3schools.com/php/func_mysqli_error.asp Learn AngularJS Learn JSON Learn AJAX Server Side Learn SQL http://www.plus2net.com/php_tutorial/php_mysql_query.php 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 mysql error 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 mysql error display 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 Includ
& Database Submit Sign UP Login × Login Username Password Login Cancel Not a member? Sign Up Forgot Password? Contact Us PHP MySQL query with error printing How to write SQL using PHP to handle the data in MySQL database? In any database driven script we have to update, add, modify, data in the tables. By using PHP we can do all this using different functions available in PHP. We will start with very basic function, which will execute any query written in sql and can be applied to MySQL database. SQL Structured Query Language or popularly known as SQL is an universal language to handle database. An introduction and different types of sql command like select, insert, update etc you will get in the sql section of this site. There are some advance SQL commands like left join, linking of tables etc to study. If you are not comfortable with SQL any time you can refer the materials in sql section. There are three steps invoved in this process. Connection to database Build the query and execute Display the data First ensure that you have established your mysql connection through PHP. To get the full details on php mysql connection you can read the article here. If you are using PDO then start with PDO connection string here. PHP Functions & SQL Let us start with the function required to execute one query in PHP. Once you have connection established then we can execute sql command by using PHP function mysql_query(). Here is the syntax of the function. Let us first write the query and store in a variable. We will write a query to create table.$query="CREATE TABLE student ( id int(2) NOT NULL auto_increment, name varchar(50) NOT NULL default '', class varchar(10) NOT NULL default '', mark int(3) NOT NULL default '0', PRIMARY KEY (id) ) TYPE=MyISAM"; We have stored the sql create query in a variable $query and we will pass this as a parameter to the function like below. $rt=mysql_query($query); The above command will execute the query ( stored in variable $query) and we can check the status of the query ( successful or not ) by checking the status of $rt. $rt will be true of the query is successfully executed or it will return false. We will use php if command to check the status of the query. if($rt){echo " Command is successful ";} else {echo "Command is not successful ";} So from the above line we can know that the query has worked or