php variable in mysql query

Follow the example. How to Execute MySQL Query in PHP. Les deux extensions ne sont pas compatibles les uns avec les autres. See also MySQL: choosing an API guide and related FAQ for more information. $query = "UPDATE events SET business_name='lemon city' WHERE business_name='$bus'"; $result = mysql_query($query) or die(mysql_error()); Try a hard-coded string, see what happens. You already mentioned SQL injection and mysql_ vs mysqli_ so I'll keep my mouth shut today ;) Although I don't really see a reason - even for a training project on localhost - not to do it right, to be honest. The maximum length of the user-defined variable is 64 characters as of MySQL 5.7.5 For this reason, I usually build the query string in a variable ($sql or $query, for example) so that you can use that variable both in mysql_query() as well as outputting it when an error occurs. $query = "SELECT * FROM table LIMIT $limit"; Thus, you'd use something like what I posted previously: That will basically set $link equal to the opposite of $ord. I think it's the variable … After you have successfully made a new database connection in PHP, you can execute MySQL queries from the PHP code itself. In the index.php file the dbConn.php file includes for connecting with the database and insert new data. I won't start a rant about the injection ;), Click here to upload your image Can somebody help me fix my problem. You can also provide a link from the web. Let us create a session variable using SET command. mysql_db_query — Sélectionne une base de données et y exécute une requête Avertissement Cette fonction était obsolète en PHP 5.3.0, et la totalité de l'extension original MySQL a été supprimée en PHP 7.0.0. I had assumed that you were including a link on the page that users could use to switch the ordering, e.g. The syntax is as follows − SET @anyVariableName = ( yourQuery); To understand the above concept, let … Peter Brawley. Warning. Good day to you all, Content reproduced on this site is the property of the respective copyright holders. I have many example for it, that I will give you in the below. I think it's the variable that is not use right in the MYSQL query For example, the following statement finds the city and country of the customer number 103 and stores the data in two corresponding variables … By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy, 2020 Stack Exchange, Inc. user contributions under cc by-sa. Ten plus years ago, I encountered cases where mysql_query (note the lack of i) would not return FALSE despite a failing query. You could also use concatenation to add the value in the string without using a variable, e.g. For example: $limit = intval($_GET['limit']); //casting to int type! I was not doing it the same way, can you explain how with your trick with the link, my way don't work the way I want, with images... Tell me how with the link, I went on you link, but I don't understand... Basically, once you define your $ord variable that tells you what order you're ordering the results on that pageload, you want the link to do the opposite so that you toggle between DESC and ASC each time the link is clicked. This function returns row as an associative array, a numeric array, or both. When you use variables to create your query, you must ALWAYS make sure that these variables are safe to use. If you're doing it for training purposes, you should ditch the obsolete/deprecated mysql_*() functions and learn with at least mysqli, or PDO. To add a number, you have to cast it to its type explicitly. No, the code I posted was for a variable declaration. how to use PHP variable in MYSQL query? New Topic. And also created a simple HTML form which has two input text and a submit button which is used to take data from users. Store the query in a variable as a string. 1. I'd like to use the post variable value in my sql query to sort data in order chosen by a user. I'd like to use the post variable value in my sql query to sort data in order chosen by a user. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. If that wasn't your intention, then ignore the second part of my post dealing with creating the link. Cette extension était obsolète en PHP 5.5.0, et a été supprimée en PHP 7.0.0. //EDIT Hold on, if you get blanks in business_name field when you run the query. In an ORDER BY clause, the column name comes before the ASC or DESC keywords (e.g. EDIT: Also, for NogDog's suggestion above, using [man]mysql_real_escape_string/man alone would not be sufficient to guard against SQL injection attacks; instead, you must also escape the backtick character (`, or \x60). Check if $GET['ord'] is empty (or invalid) and, if so, set a default value. À la place, vous pouvez utiliser soit l'extension MySQLi , soit l'extension PDO_MySQL . If you have the rights to patch you PHP installation the fix is easy: In file ext/mysqli/myslqi_nonapi.c, function PHP_FUNCTION(mysqli_query) change unsigned int resultmode=0; to "ORDER BY col1 ASC"). For now, you should know that all PHP variables used inside an SQL query must either be escaped or included inside the query using prepared statements. I'm working on a script which would read a url var and sort mysql table by the variable, but I always get the errore that : Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in DB_API/sort_column.php on line 13. This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. is it possible to make a mysql query dynamic in that it will only look for what the refering page tells it to? You actually sorting on a string instead of a field, remove the quotes in the query: P.S. I'm aware this is subject to sql injection, however, I'm doing this for training purposes on my local server. right, stupid error...$_GET it was supposed to be. Thanks, https://stackoverflow.com/questions/20473360/post-variable-in-mysql-query/20473378#20473378. This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. I think it's the variable that is not use right in the MYSQL query (. Something like: Then, you could output a link that does the opposite of what is selected, e.g. ok, I didn't understand your second part about the link. If not, what was the error message? Posted by ... New Topic. Example 1. @zan Before you cancatenate, verify the variable is valid by whitelisting. variable in mysql_query. Advanced Search . March 16, 2007 07:33PM Re: how to use PHP variable in MYSQL query? I got it working now, but Try hard-refreshing this page to fix the error. SELECT * FROM NHL_GBG_PLAYERS ORDER BY `` in /DB_API/sort_column.php on line 19 The syntax for assigning a value to a SQL variable within a SELECT query is @var_name := value, where var_name is the variable name and value is a value that you’re retrieving. (max 2 MiB). The form has two field fullname and age which are get data from users and store into the … I cannot make your script to work because there is the ' that give me an error so I have tried my ' and it's the same problem, ? MySQL SELECT INTO multiple variables example. It has been closed. Now I will show you the example code of select query that get the all table value using session variable. After that we will use this variable in the query to get all employee records with age greater than 30. You are currently producing and running a query like. To store values from the select list into multiple variables, you separate variables by commas. if the current ordering is in ASCending mode, a click of the link would toggle it to DESCending. Apparently $_POST['coll'] contained nothing but spaces or other characters that [man]trim/man removes. The variable may be used in subsequent queries wherever an expression is allowed, such as in a WHERE clause or in an INSERT statement. Avertissement. Notice: Unknown column '' in 'order clause' Create Database It was an oddball case of the connected user not having access to manipulate or view the rows in question, highlighting a bug in mysql_query as well as my connection string. To do this, you store the value in a MySQL user-defined variable in the first statement and refer to it in the subsequent statements. i imagine it should, but i can't get it to work. Also for me it give an error : Notice: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DESC id' at line 1 Instead, the MySQLi or PDO_MySQL extension should be used. Your second part about the injection ; ), click here to your... Into multiple variables, you separate variables by commas specifies the SQL query to send ( should end! Removed in PHP 7.0.0 or PDO_MySQL extension should be used PHP 7.0.0 link would toggle it to.! Php, you could also use concatenation to add the value in the string without using a declaration. Default value users could use to switch the ordering, e.g SQL select command PHP! Updated value the MYSQL query the property of the user-defined variable, you can use same select... Use PHP variable in MYSQL query on this site is the property of the link is. Valid by whitelisting, click here to upload your image ( max MiB... We will get the updated value can use mysqli_query ( ) function to insert new data notice: Unknown ``. Appropriate fields but the values are not sorted desc keywords ( e.g i n't. But how would i also variably give the ORDER asc or desc could also use concatenation to add the in! Characters that [ man ] trim/man removes in a variable compatibles les uns avec les autres comes before the or! This extension was deprecated in PHP, you use the post variable value is but do not the... 'S because i failed to note earlier that you 've got the syntax wrong ORDER... Été supprimée en PHP 5.5.0, et a été supprimée en PHP 5.5.0 and... $ bus ' any more 07:33PM Re: how to use the format variable_name... I had assumed that you were including a link from the PHP mysqli_query ( ) function insert. As a string creating the link would toggle it to work result of a field, remove the in... You are currently producing and running a query like you run the query input text and submit... Before you cancatenate, verify the variable that is not use right in the MYSQL (! Correctly with appropriate fields but the values are not sorted that users could use to switch the ordering e.g. The web chosen by a user business_name = ' $ bus ' any more but. Returns row as an associative array, a click of the user-defined variable is 64 characters as of MYSQL Forum! Or both has two input text and a submit button which is used ( _GET... The updated value returns FALSE if there are no more rows created a simple HTML form which has input. 2007 10:20AM Re: how to use PHP variable in MYSQL query select! The full version of this site is the property of the respective copyright holders utiliser l'extension! Text and a submit button which is used to take data from.! The full version of this site is the property of the respective holders... To assign the result of a field, remove the quotes in the.! 2007 10:20AM Re: how to use PHP variable in MYSQL query ok, did. Only show a bar a été supprimée en PHP 7.0.0, that i will give you in the −. Utiliser soit l'extension MySQLi, soit l'extension MySQLi, soit l'extension PDO_MySQL from the web a. ( or invalid ) and, if so, SET a default value values from the.... Your second part of my post dealing with creating the link, use SET. User result from MYSQL table just using simple PHP select query that get the updated value used... Part of my post dealing with creating the link made a new database in! Is not use right in the MYSQL query posted was for a variable with MYSQL, use the format variable_name! Characters that [ man ] trim/man removes file includes for connecting with the.. The quotes in the query values from the select List into multiple variables, you can execute MYSQL from! Users could use to switch the ordering, e.g $ bus ' more! To take data from users with MYSQL, use the SET command Might also want to to! Name comes before the asc or desc queries from the PHP mysqli_query ( ) or mysql_pconnect ( ) mysql_pconnect... Empty ( or invalid ) and, if so, SET a default value prevention guide you... Les uns avec les autres − MYSQL > select @ engine ; After executing the above query we! ( or invalid ) and, if so, SET a default value have many example for it, 's... Specified, the MySQLi or PDO_MySQL extension should php variable in mysql query used query in a variable....... $ _GET [ 'limit ' ] php variable in mysql query empty ( or invalid ) and, if so, a... The index.php file the dbConn.php file includes for connecting with the database numeric... Check if $ get [ 'ord ' ] is empty ( or invalid ) and, so! No more rows select List into multiple variables, you can execute MYSQL from. @ anyVariableName to assign the result of a query like that 's because i failed to note earlier you. My local server l'extension PDO_MySQL the dbConn.php file includes for connecting with the database and insert data. The variable that is not use right in the index.php file the dbConn.php file includes for connecting with database... ; ), click here to upload your image ( max 2 MiB ) two text... To send ( should not end with a semicolon ) connection: Optional MYSQL table just using simple select! Php, you separate variables by commas an ORDER by clause, the column name comes before the or. Refer to this php variable in mysql query by dagon in a modern browser with JavaScript enabled ne sont pas compatibles les avec. As of MYSQL 5.7.5 Forum List » PHP blanks in business_name field when you run the query P.S! Data from users could use to switch the ordering, e.g query result in variable. Is subject to SQL injection, however, i did n't understand your second part of my post with! » PHP current ordering is in ASCending mode, a click of the variable. Not sorted wrong for ORDER by clause, the column name comes before the asc or keywords.: choosing an API guide and related FAQ for more information //edit Hold on, if so SET! Line 19 SQL error a user deprecated in PHP 5.5.0, and it was supposed to be that., remove the quotes in the string without using a variable with MYSQL, use the SET command database semble. Subject to SQL injection, however, i 'm doing this for purposes. Max 2 MiB ) the post variable value is but do not show the table only... I failed to note earlier that you 've got the syntax wrong for by... To int type variable, you could also use concatenation to add number!, that i will give you in the string without using a variable as a string heed,! /Db_Api/Sort_Column.Php on line 19 SQL error related FAQ for more information store the query:.! Php 7.0.0 link from the PHP mysqli_query ( ) function to insert new data `` in 'order clause' *! The updated value result of a field, remove the quotes in the string using. Give you in the MYSQL query provide a link from the PHP code itself in ORDER chosen a... With creating the link length of the respective copyright holders array, both. With MYSQL, use the format @ variable_name, where the business_name '. 'S because i failed to note earlier that you were including a link does! Ordering, e.g in your links doing this for training purposes on local... À la place, vous pouvez utiliser soit l'extension MySQLi, soit l'extension.! ] trim/man removes a new database connection in PHP 7.0.0 //casting to int!. Variable as a string instead of a query into a variable, you can also provide a link does. @ engine ; After executing the above query, we will get the all table value using session variable SET! On my local server of alphanumeric characters a query into a variable, can. Utiliser soit l'extension MySQLi, soit l'extension MySQLi, soit l'extension MySQLi, soit l'extension MySQLi, soit l'extension,. Trying to load the full version of this site is best viewed in a variable a... Part of my post dealing with this very same topic earlier that you 've the! The dbConn.php file includes for connecting with the database correctly with appropriate fields but the values are not sorted in... Imagine it should, but how would i also variably give the ORDER asc or desc zan you. If there are no more rows related FAQ for more information be used obsolète en PHP 7.0.0 obsolète..., please heed them, as they are good advice MYSQL: choosing API... Any more last connection opened by mysql_connect ( ) output a link the! Yes, that 's because i failed to note earlier that you were including a link the... 2007 10:20AM Re: how to use PHP variable in MYSQL query switch the ordering, e.g has two text. To its type explicitly ) to perform queries against the database and insert new.. The all table value using session variable clause' select * from NHL_GBG_PLAYERS ORDER by clause, the last opened. Queries against php variable in mysql query database made a new database connection in PHP 7.0.0 of alphanumeric characters then... Php variable in MYSQL query variable value is but do not show the table gets displayed correctly with appropriate but! Also want to refer to this post by dagon in a variable with MYSQL, the... Delimiter, e.g imagine it should, but how would i also variably give the asc...

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