PHP : mysql_query() function
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Description
The mysql_query() is used to execute query on the default database.
Version
(PHP 4 and above)
Syntax
mysql_query(query, connection)
Parameters
| Name | Description | Required/ Optional | Type |
|---|---|---|---|
| query | A SQL query. | Required | String |
| connection | The MySQL connection. Before performing any operation on a MySQL database, it is required to set a connection to the mysql database you want to work with. And this is done by mysql_connect() function. This function takes three parameters, name of the host, username with which you want to perform tasks with the mysql database in question, and password of that user. As soon as a successful connection is established, you can perform the operations on that mysql database. In case, no such connection is found, it will try to create one without any arguments, i.e. mysql_connect() without any parameters. If it fails to connect to a mysql database, it will generate a warning (E_WARNING) but not an error. | Optional | Resource |
Return value
Query handle for successful SELECT, SHOW, DESCRIBE, EXPLAIN and other statements or FALSE on error.
Value Type : Resource.
Example :
<?php
$con = mysql_connect("localhost", "root", "mypass") or
die("Could not connect: " . mysql_error());
mysql_select_db("tutorials");
$result = mysql_query("select * from tutorials");
echo "<h2>Here is a list of the topics:</h2>";
while ($row = mysql_fetch_array($result)) {
echo $row['name']."<br />";
}
mysql_close($con);
?>
Output :
Here is a list of the topics:
htmlcss
sql
mysql
javascript
php
quick reference
See also
