How to use MYSQL and two different Submit buttons? - php

Question

I have created a song database (mysql) where a user can enter data into the textfield, select "by artist" or a "by title" radio button and click submit. This all works fine. :)
However, I would like to add another submit button that bypasses the above query and simply lists all of the songs that have been added to the database with a year's time.
I believe that the query I need is:
select * from dt_tb where `dt` >= DATE_SUB(CURDATE(), INTERVAL 1 YEAR)
but I cannot figure out how to code the PHP to run the query for the songs within the past year.
Here are the two forms I have:
<p>
<form name="form" method="get" action="">
Search for: <input type="text" name="q" />
<input type="radio" name="field" value="title" <?=$checkTitle?> checked> Title
<input type="radio" name="field" value="artist" <?=$checkArtist?> > Artist
<input type="submit" name="Submit" value="Search" />
</form></p>
<form name="form" method="post" action="">
<br />
<input type="submit" name="Newsongs" value="New Releases" />
</form></p>
and here is the current, working php for the 1st query:
<?php
$delimiter = "\t";
$newline = "\n";
$var = #$_GET['q'] ;
$field = #$_GET['field'];
$var = htmlentities($var);
$trimmed = trim($var); //trim whitespace from the stored variable
$search_words = explode(' ', $var);
if ($var != "") {
// rows to return
$limit=100;
// check for an empty string and display a message.
if ($trimmed == "")
{
echo "<p>Please enter a search...</p>";
exit;
}
// check for a search parameter
if (!isset($var))
{
echo "<p>We dont seem to have a search parameter!</p>";
exit;
}
//connect to your database
mysql_connect("DBLocation","DatabaseName","PASSWORD"); //(host, username, password)
//specify database
mysql_select_db("DatabaseName") or die("Unable to select database"); //select which database we're using
// Build SQL Query
$query = "SELECT * FROM Songs where $field like \"%$trimmed%\" order by $field ";
$numresults=mysql_query($query);
$numrows=mysql_num_rows($numresults);
// If we have no results, offer a google search as an alternative
if ($numrows == 0)
{
echo "<h4>Results</h4>";
echo "<p>Sorry, your search: "" . $trimmed . "" returned zero results</p>";
}
// next determine if s has been passed to script, if not use 0
if (empty($s)) {
$s=0;
}
// get results
$query .= " limit $s,$limit";
$result = mysql_query($query) or die("Couldn't execute query");
// display what the person searched for
echo "<p>You searched for: "" . $var . ""</p>";
// begin to show results set
echo "<p style=\"color: #00ff00; font-size: 1.2em;\">Results</p>";
$count = 1 + $s ;
// now you can display the results returned
while ($row= mysql_fetch_array($result)) {
$title = $row["title"];
$artist = $row["artist"];
echo "$title";
echo " - ";
echo "$artist";
echo "<br />";
echo $newline;
$count++ ;
}
$currPage = (($s/$limit) + 1);
//break before paging
echo "<br />";
$a = $s + ($limit) ;
if ($a > $numrows) { $a = $numrows ; }
$b = $s + 1 ;
echo "<p>Showing results $b to $a of $numrows</p>";
}
?>

Answer 1

You can add a hidden field and then check it on submit:
<input type="hidden" name="act" id="act" value="">
Then on your second submit button, use JavaScript to change the value:
<input type="submit" name="Newsongs" value="New Releases" onclick="document.getElementById('act').value = 'list_all'" />
If the value is "list_all", process that, else do your current processing.
if ($_POST['act'] == 'list_all') {
// process second submit button code
} else {
// all your current code
}

Answer 2

You'll want to check if the NewSongs submit button was on the form submitted, and use that in an if statement to do the query or not.
<?php
if (!isset($_POST['NewSongs'])){
//do the search
} else {
//don't do the search
}
?>

Answer 3

You could use 2 submit button inside a form :
<p><form name="form" method="get" action="">
Search for: <input type="text" name="q" />
<input type="radio" name="field" value="title" <?=$checkTitle?> checked> Title
<input type="radio" name="field" value="artist" <?=$checkArtist?> > Artist
<input type="submit" name="submit" value="Search" />
<input type="submit" name="submit" value="New" />
</form>
</p>
<?php
if(isset($_GET['submit']) && $_GET['submit'] == 'Search'){
// do search
}
if(isset($_GET['submit']) && $_GET['submit'] == 'New'){
// do second search
}
?>