Random Statements

[Tenaciousmug]

Alright, I have a random thing going on. Works perfectly fine. This is the code:

 

<?php
include("config.php");

//To change the odds, change the second number in the rand() function.
$rand = floor(rand(0,1));
if($rand == 1)
{
$sql = "SELECT * FROM randomevents WHERE rarity <= '10'";
$result = mysqli_query($cxn, $sql);
while ($row = mysqli_fetch_assoc($result))
{
	$event[] = $row['phrase'];
	if ($row['type'] == 'gainsp')
	{
		$rand = rand(200,500);
		$sql = "UPDATE members SET starpoints = starpoints+$rand WHERE userid='".$_SESSION['userid']."'";
		mysqli_query($cxn, $sql) or die("Query died: updating starpoints");
	}
}

//This will pick a random event and show it
$renum = floor(rand(0,count($event)));

$eventdisplay = $event[$renum];
}
?>

 

In the database, I have the phrases set as:

"You have gained {$rand} starpoints!".

How do you make that variable echo out as the $rand I'm generating on this page?

It just keeps posting as is. When I went the {$rand} to display as the number I'm generating to set their starpoints to.

So I guess how do you hold a variable in the database?

 

Does anyone understand what I'm asking?

Here as an image to help understand:

 

[spiderwell]

whats in the database is just a string with what 'looks' like a php variable, php wont recognise it, you would have to use str_replace() to put your actual $rand variable into that string. then it should echo out correctly

[Tenaciousmug]

Oh wow.

You have any clue how I would do that?

Sorry, my brain is completely dead and I can't even think of where to start on that one.

 

But thanks for the.. further solution. xP

[PaulRyan]

Try using a simple str_replace, you'll get something like this...

 

  if(strstr($eventdisplay,'{$rand}')) {
    echo str_replace('{$rand}',$rand,$eventdisplay);
  } else {
    echo 'No event to display.';
  }

 

Try the above code and place it below $eventdisplay, tell me how it goes

 

Regards, PaulRyan.

[Tenaciousmug]

Well I got it doing it another way.

Pretty long, but I don't feel like confuzzling my brain anymore. xD

I put:

if ($row['type'] == "gainsp")
	{
		$rand = rand(200,500);
		$displaya = str_replace("rand", "".$rand."", "".$display."");
		$sql = "UPDATE members SET starpoints = starpoints+$rand WHERE userid='".$_SESSION['userid']."'";
		mysqli_query($cxn, $sql) or die("Query died: updating starpoints");
		$eventdisplay = "<table cellspacing=\"0\" class=\"events\" align=\"center\">
		<tr>
		<td width=\"350px\"><center><b><h1>Random Event</h1></b></center></td>
		</tr>
		<tr>
		<td><img src=\"http://www.elvonica.com/".$image."\" style=\"position:relative;float:left;\">
		<p><center>".$displaya."</center></p>
		</td>
		</table><br>";
	}
	elseif ($row['type'] == "losesp")
	{
		$rand = rand(50,100);
		$displaya = str_replace("rand", "".$rand."", "".$display."");
		$sql = "UPDATE members SET starpoints = starpoints-$rand WHERE userid='".$_SESSION['userid']."'";
		mysqli_query($cxn, $sql) or die("Query died: updating starpoints");
		$eventdisplay = "<table cellspacing=\"0\" class=\"events\" align=\"center\">
		<tr>
		<td width=\"350px\"><center><b><h1>Random Event</h1></b></center></td>
		</tr>
		<tr>
		<td><img src=\"http://www.elvonica.com/".$image."\" style=\"position:relative;float:left;\">
		<p><center>".$displaya."</center></p>
		</td>
		</table><br>";
	}

 

Thanks though! (:

[Tenaciousmug]

Crap nevermind. Now I'm getting an error whenever its wanting to show the "youve gained starpoints" random event.

 

<?php
include("config.php");

//To change the odds, change the second number in the rand() function.
$rand = rand(1,3);
if($rand == 1)
{
$sql = "SELECT * FROM randomevents WHERE rarity <= '10'";
$result = mysqli_query($cxn, $sql);
while ($row = mysqli_fetch_assoc($result))
{
	$event[] = $row['phrase'];
}

//This will pick a random event and show it
$renum = rand(0,count($event)-1);
$display = $event[$renum];

if ($display == "")
{
	$eventdisplay = "";
}
else
{
	$sql = "SELECT * FROM randomevents WHERE phrase='".$display."'";
	$result = mysqli_query($cxn, $sql);
	$row = mysqli_fetch_array($result);

	$image = $row['image'];

	if ($row['type'] == "gainsp")
	{
		$rand = rand(200,500);
		$displaya = str_replace("rand", "".$rand."", "".$display."");
		$sql = "UPDATE members SET starpoints = starpoints+$rand WHERE userid='".$_SESSION['userid']."'";
		mysqli_query($cxn, $sql) or die("Query died: updating starpoints");
		$eventdisplay = "<table cellspacing=\"0\" class=\"events\" align=\"center\">
		<tr>
		<td width=\"350px\"><center><b><h1>Random Event</h1></b></center></td>
		</tr>
		<tr>
		<td><img src=\"http://www.elvonica.com/".$image."\" style=\"position:relative;float:left;\">
		<p><center>".$displaya."</center></p>
		</td>
		</table><br>";
	}
	elseif ($row['type'] == "losesp")
	{
		$rand = rand(50,100);
		$displaya = str_replace("rand", "".$rand."", "".$display."");
		$sql = "UPDATE members SET starpoints = starpoints-$rand WHERE userid='".$_SESSION['userid']."'";
		mysqli_query($cxn, $sql) or die("Query died: updating starpoints");
		$eventdisplay = "<table cellspacing=\"0\" class=\"events\" align=\"center\">
		<tr>
		<td width=\"350px\"><center><b><h1>Random Event</h1></b></center></td>
		</tr>
		<tr>
		<td><img src=\"http://www.elvonica.com/".$image."\" style=\"position:relative;float:left;\">
		<p><center>".$displaya."</center></p>
		</td>
		</table><br>";
	}
	else
	{}
}
}
else
{
$eventdisplay = "";
}
?>

 

Error message:

Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given in /home1/elvonica/public_html/randomevents.php on line 27

[Zane]

just use eval

[Tenaciousmug]

I did that. It does the same thing. They're basically the same.

[xyph]

A moderator suggesting the use of EVAL?!?! With data coming from an outside source? BAD IDEA!

 

Echo your $sql variable after line 25. That should let you know what's going on with your query. My guess is you need to change it to

 

$sql = "SELECT * FROM randomevents WHERE phrase='".mysqli_real_escape_string($cxn,$display)."'";

[Tenaciousmug]

Wow, you're a genius. (:

It's because the first phrase for receiving starpoints had an apostrophe.

And the other one didn't. That's why that one was showing.

 

Thank you so much! (: