Provide Data from mysql using a search field in a form - mysql

Question

i use a crm on a wordpress website. I'm trying to make a search field where a user can enter a number and with that number he/she should be able to see certain data from the database that is connected with the number that is entered.
What i got so far is:
<?php
$dbhost = 'localhost';
$dbuser = 'my user name';
$dbpass = 'my password';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn ) {
die('Kan geen connectie maken: ' . mysql_error());
}
$sql = 'SELECT lead_content FROM wp_wgbsupicrm_leads';
mysql_select_db('my database name');
$retval = mysql_query( $sql, $conn );
if(! $retval ) {
die('Kan geen gegevens vinden: ' . mysql_error());
}
while($row = mysql_fetch_array($retval, MYSQL_ASSOC)) {
echo "EMP ID :{$row['lead_content']} <br> ".
"--------------------------------<br>";
}
echo "Gegevens ontvangen\n";
mysql_close($conn);
?>
This will give me a result of:
resultaat:{"zoeknummer":"554477","komplex":"test
4","plaats":"84","versturen":null}
resultaat:{"zoeknummer":"556478","komplex":"test
3","plaats":"51","versturen":null}
resultaat:{"zoeknummer":"112255","komplex":"test
2","plaats":"12","versturen":null}
resultaat:{"zoeknummer":"110022","komplex":"Test
1","plaats":"1","versturen":null}
What i want is a search field where the "zoeknummer" is entered and the "komplex" & "plaats" are shown. the "versturen" isn't needed to be shown.
This is an image of the database where i need to get the information from:
enter image description here
To get this far i spended 1 and a half day.. I know i'm a total starter at this all, i have a basic html and css.. But i'm trying to learn more and hope with some assistance here i can get this to work, and in the mean time learn how it works.
Thanks in advance!

Answer 1

you should know how to use WHERE clause in your SQL query. this is mainly used for search purposes.
In your HTML form, give the textfield a name such as: name="$data"
Then in your SQL query:
$sql = "SELECT lead_content FROM wp_wgbsupicrm_leads' where lead_content='$data'";
Then the search will give you only the data you want from the text field you entered.