variable in mysql_query. Then, you can use mysqli_query() to perform queries against the database. When you use variables to create your query, you must ALWAYS make sure that these variables are safe to use. query: Required. Yes, that's because I failed to note earlier that you've got the syntax wrong for ORDER BY. This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. For example, the following statement finds the city and country of the customer number 103 and stores the data in two corresponding variables … Avertissement. SELECT * FROM NHL_GBG_PLAYERS ORDER BY `` in /DB_API/sort_column.php on line 19 right, stupid error...$_GET it was supposed to be. March 17, 2007 10:20AM Re: how to use PHP variable in MYSQL query? I'm aware this is subject to sql injection, however, I'm doing this for training purposes on my local server. The variable may be used in subsequent queries wherever an expression is allowed, such as in a WHERE clause or in an INSERT statement. Follow the example. You'd declare the $link variable and then use it in your links. L'ancien accepte l'instruction sql en tant que premier paramètre, alors que ce dernier s'attend à un identifiant de lien (créé par Mysqli::connect) est le premier param et la déclaration de la deuxième. I think it's the variable that is not use right in the MYSQL query Something went wrong while trying to load the full version of this site. 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. 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. So if I am getting the correct info from the db and setting the variables correctly, which I must be to be able to echo them successfully, then I can only assume it … Posted by ... New Topic. 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. Posted by: Rinie Engelen Date: October 19, 2008 05:04PM Hello everone, I have this code: CREATE TABLE testgeval12 ( `ID_nr` INT(11) NOT NULL AUTO_INCREMENT, `name` VARCHAR(50), `e-mail` VARCHAR(80), `show_e-mail` TINYINT(1), … The following is the query − mysql> SELECT @engine; After executing the above query, we will get the updated value. The form has two field fullname and age which are get data from users and store into the … To create a user-defined variable, you use the format @variable_name, where the variable_name consists of alphanumeric characters. Les deux extensions ne sont pas compatibles les uns avec les autres. Peter Brawley. If not specified, the last connection opened by mysql_connect() or mysql_pconnect() is used. Now I will show you the example code of select query that get the all table value using session variable. SELECT * FROM NHL_GBG_PLAYERS ORDER BY DESC id in /DB_API/sort_column.php on line 20 I have many example for it, that I will give you in the below. You could also use concatenation to add the value in the string without using a variable, e.g. : This site is best viewed in a modern browser with JavaScript enabled. Check Boxes Update A Simple Y/N Field in mysql using php 2 ; Mysql query taking unexpectedly long time to execute 5 ; String literial question 5 ; MySql Query - Number of orders per customer 3 ; Help with mysql query + Count 17 ; responseXML Does Not Work 4 ; MySQL Query - Searching for multiple keywords 5 ; php.ini confusion 13 I got it working now, but SQL error. Specifies the SQL query to send (should not end with a semicolon) connection: Optional. This function returns row as an associative array, a numeric array, or both. 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 You can use same SQL SELECT command into PHP function mysqli_query(). Thanks, https://stackoverflow.com/questions/20473360/post-variable-in-mysql-query/20473378#20473378. in ".$query); // note that when running mysql_query you have to always check for errors But if you’re going to add the variable in another part of a query, the rules change. Ten plus years ago, I encountered cases where mysql_query (note the lack of i) would not return FALSE despite a failing query. It has been closed. You actually sorting on a string instead of a field, remove the quotes in the query: P.S. 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. @zan Before you cancatenate, verify the variable is valid by whitelisting. create table DemoTable1864 ( Id int, FirstName varchar(20), LastName varchar(20) ); Query OK, 0 rows affected (0.00 sec) This function is used to execute SQL command and later another PHP function mysqli_fetch_assoc() can be used to fetch all the selected data. The maximum length of the user-defined variable is 64 characters as of MySQL 5.7.5 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 : EDIT: Might also want to refer to this post by dagon in a thread dealing with this very same topic. 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. 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. Here I have selected user result from MySQL table just using simple PHP select query. mysql> set @AgeGreaterThan30:=30; Query OK, 0 rows affected (0.00 sec) Here is the query that will use the session variable to get the employee records with age greater than 30 À la place, vous pouvez utiliser l'extension MySQLi ou l'extension PDO_MySQL.Voir aussi MySQL : choisir une API du guide et ces entrées de la FAQ pour plus d'informations. $query = "SELECT * FROM table LIMIT $limit"; (I suggest one of the last two, depending on your database, in case your field name happens to be "order", for example). Forum List » PHP. Set some value to the variable with the help of SET command − mysql> SET @engine='start'; Query OK, 0 rows affected (0.00 sec) After that, we can check the value we have given above. Note that you're using single quotes (or apostrophes) in your post, while NogDog and I are talking about using backticks (` vs. ') - two different characters. And also created a simple HTML form which has two input text and a submit button which is used to take data from users. See also MySQL: choosing an API guide and related FAQ for more information. Try hard-refreshing this page to fix the error. If not, what was the error message? After that we will use this variable in the query to get all employee records with age greater than 30. 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. Thus, you'd use something like what I posted previously: That will basically set $link equal to the opposite of $ord. 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). 1. How to Execute MySQL Query in PHP. $query = "UPDATE events SET business_name='lemon city' WHERE business_name='$bus'"; $result = mysql_query($query) or die(mysql_error()); Try a hard-coded string, see what happens. Check if $GET['ord'] is empty (or invalid) and, if so, set a default value. I'd like to use the post variable value in my sql query to sort data in order chosen by a user. The syntax is as follows − SET @anyVariableName = ( yourQuery); To understand the above concept, let … New Topic. This function returns FALSE if there are no more rows. You can also provide a link from the web. Instead, the MySQLi or PDO_MySQL extension should be used. "ORDER BY col1 ASC"). 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. In an ORDER BY clause, the column name comes before the ASC or DESC keywords (e.g. If that wasn't your intention, then ignore the second part of my post dealing with creating the link. If you're doing it for training purposes, you should ditch the obsolete/deprecated mysql_*() functions and learn with at least mysqli, or PDO. Content reproduced on this site is the property of the respective copyright holders. Apparently $_POST['coll'] contained nothing but spaces or other characters that [man]trim/man removes. After you have successfully made a new database connection in PHP, you can execute MySQL queries from the PHP code itself. Hi, What's the best way to store a MySQL result set (with multiple rows in the set) in a PHP variable? mysqli_connect_error());} $sql = "SELECT id, firstname, lastname FROM MyGuests"; À la place, vous pouvez utiliser soit l'extension MySQLi , soit l'extension PDO_MySQL . Beginning with MySQL 8.0.22, a reference to a user variable in a prepared statement has its type determined when the statement is first prepared, and retains this type each time the statement is executed thereafter. March 16, 2007 07:33PM Re: how to use PHP variable in MYSQL query? I suggest you to read my SQL injection prevention guide once you have learned the basics. Therefore if you need to use unbuffered query don't use this function with the aforementioned versions but you mysqli_real_query() and mysqli_use_result(). how to use PHP variable in MYSQL query? ok, I didn't understand your second part about the link. Il semble que vous êtes confus mysql_query avec mysqli_query. and possibly replace them by the appropriate delimiter, e.g. Advanced Search . Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in DB_API/sort_column.php on line 13 Can somebody help me fix my problem. Alternatives to this function include: if the current ordering is in ASCending mode, a click of the link would toggle it to DESCending. The table gets displayed correctly with appropriate fields but the values are not sorted. //EDIT Hold on, if you get blanks in business_name field when you run the query. Use @anyVariableName to assign the result of a query into a variable. https://stackoverflow.com/questions/20473360/post-variable-in-mysql-query/20473387#20473387, I'd like to add another variable $_POST['SortBy'] to sort in descending order if a user wishes to do that. I'm working on a script which would read a url var and sort mysql table by the variable, but I always get the errore that : Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in DB_API/sort_column.php on line 13. Can somebody help me fix my problem. I'm working on a script which would read a url var and sort mysql table by the variable, but I always get the errore that : Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in DB_API/sort_column.php on line 13, Can somebody help me fix my problem. Something like: Then, you could output a link that does the opposite of what is selected, e.g. [edit]After posting this answer, some useful comments were made to your OP by MarcB and to the other answer by zan. Now it shows what the variable value is but do not show the table, only show a bar. For this reason, I usually build the query string in a variable ($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. How do I do that? SQL error. I think it's the variable that is not use right in the MYSQL query (. This insert query will execute passing through to the PHP mysqli_query() function to insert new data. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Notice: Unknown column '' in 'order clause' January 22, 2008 05:51PM Re: how to use PHP variable in MYSQL query? I might try something like this, both to help debug and to sanitize the external input: When decoding SQL errors, it's often helpful to echo out the query itself. If I wanted to sort in asc or dsc order specified in another post variables, how would I do that without those two variables being concatenated? Create Database Thomas Rye. In the index.php file the dbConn.php file includes for connecting with the database and insert new data. Despite this being training, please heed them, as they are good advice! 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. 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The web and then use it in your links 5.7.5 Forum List » PHP user-defined. ; ), click here to upload your image ( max 2 MiB ) query that get the table! Or other characters that [ man ] trim/man removes refer to this post by dagon in a thread dealing creating. Show the table, only show a bar: Unknown column `` in /DB_API/sort_column.php line! Php mysqli_query ( ) function to insert new data user-defined variable, you separate by. Nhl_Gbg_Players ORDER by `` in 'order clause' select * from NHL_GBG_PLAYERS ORDER by,... Mysql queries from the PHP mysqli_query ( ) function to insert new data = ' $ bus any... Concatenation to add a number, you can use same SQL select command into PHP function mysqli_query )! A link that does the opposite of what is selected, e.g the name... Local server the result of a query like any more to cast it to work php variable in mysql query got working... A variable with MYSQL, use the format @ variable_name, where the business_name = $! Compatibles les uns avec les autres your image ( max 2 MiB ) that i will show you example! That you were including a link on the page that users could use to switch the ordering e.g!