PHP With MySQL - The Where Clause

The WHERE clause is used to extract only those records that fulfill a specified criterion. Syntax SELECT column_name(s) FROM table...

The WHERE clause is used to extract only those records that fulfill a specified criterion.

Syntax

SELECT column_name(s)
FROM table_name
WHERE column_name operator value

To learn more about SQL, please visit our SQL tutorial.
To get PHP to execute the statement above we must use the mysql_query() function. This function is used to send a query or command to a MySQL connection.

Example

The following example selects all rows from the "Persons" table where "FirstName='Peter':

<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }

mysql_select_db("my_db", $con);

$result = mysql_query("SELECT * FROM Persons
WHERE FirstName='Peter'");

while($row = mysql_fetch_array($result))
  {
  echo $row['FirstName'] . " " . $row['LastName'];
  echo "<br />";
  }

?>

The output of the code above will be:

Peter Griffin
Name

ADO,131,ASP,3,C++,61,CORE JAVA,1,CSS,115,HTML,297,index,5,JAVASCRIPT,210,OS,47,PHP,65,SAD,53,SERVLETS,23,SOFTWARE ENGINEERING,245,SQL,71,TCP/IP,1,XHTML,9,XML,18,
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Best Online Tutorials | Source codes | Programming Languages: PHP With MySQL - The Where Clause
PHP With MySQL - The Where Clause
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