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blinky001

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Posts posted by blinky001

    [SOLVED] Zend FW 1.5 ErrorController Issues

    in Frameworks

    Posted

    Found a work around online (credit to Daniel Cousineau). Apparently the ZF does not allow for multiple error controllers by default - God knows why not - it is very useful to be able to handle errors differently for different modules...

     

    <?php

class APP_Controller_Plugin_ErrorControllerSelector extends Zend_Controller_Plugin_Abstract
{

    public function routeShutdown(Zend_Controller_Request_Abstract $request)
    {
        $front = Zend_Controller_Front::getInstance();

        # If the ErrorHandler plugin is not registered, bail out
        if(!($front->getPlugin('Zend_Controller_Plugin_ErrorHandler') instanceOf Zend_Controller_Plugin_ErrorHandler))
        {
            return;
        }

        $error = $front->getPlugin('Zend_Controller_Plugin_ErrorHandler');

        # Generate a test request to use to determine if the error controller in our module exists
        $testRequest = new Zend_Controller_Request_HTTP();
        $testRequest->setModuleName($request->getModuleName())
                    ->setControllerName($error->getErrorHandlerController())
                    ->setActionName($error->getErrorHandlerAction());

        # Does the controller even exist?
        if($front->getDispatcher()->isDispatchable($testRequest))
        {
            $error->setErrorHandlerModule($request->getModuleName());
        }
    }

}

     

    and then in the bootstrap just register an extra plugin:

     

    <?php

$frontController->registerPlugin(new APP_Controller_Plugin_ErrorControllerSelector());

?>

     

    Hope this helps others...

    Pathing

    in PHP Coding Help

    Posted

    Afraid I've never tried to do this in PHP, but I did have a go starting from someone elses script once in JS, sadly my Zelda clone was too boring to work on for very long...

     

    //pathFinder.js

function pathFinder(grid)
{
    this.grid    = grid;
    this.cols    = grid[0].length;
    this.rows    = grid.length;
    this.limit   = this.cols * this.rows;
}

pathFinder.prototype = {

    // Variables ---------------------------------------------------------
    grid:    new Array(),
    start:    new Array(),
    end:    new Array(),
    cols:    0,
    rows:    0,
    limit:    0,

    
    // Returns boolean value (Grid cell is available and open)
    inGrid: function(x, y)
    {
        return this.grid[y][x] === 1;
    },


    // Node function, returns a new object with Node properties
    node: function(parent, point)
    {
        return {
            parent: parent,
            value:    point.x + (point.y * this.cols),
            x:        point.x,
            y:        point.y,
            f:        0,
            g:        0
        };
    },


    calculatePath: function(start, end)
    {
        this.start    = start;
        this.end    = end;

        var    startNode        = this.node(null, {x:this.start[0], y:this.start[1]}),
            endNode            = this.node(null, {x:this.end[0], y:this.end[1]}),
            AStar            = new Array(this.limit),    
            openArray        = [startNode], 
            closedArray        = [], 
            resultArray        = [],
            successorNodes, 
            currentNode, 
            pathNodes, 
            length, 
            max, 
            min, 
            i, 
            j;    

        while(length = openArray.length)
        {
            max = this.limit;
            min = -1;

            for(i = 0; i < length; i++)
            {
                if(openArray[i].f < max)
                {
                    max = openArray[i].f;
                    min = i;
                }
            }

            currentNode = openArray.splice(min, 1)[0];

            if(currentNode.value === endNode.value)
            {
                pathNodes = closedArray[closedArray.push(pathNodes) - 1];

                do
                {
                    resultArray.push([pathNodes.x, pathNodes.y]);
                }
                while(pathNodes = pathNodes.parent);

                AStar = closedArray = openArray = [];

                resultArray.reverse();
            }
            else
            {
                successorNodes = this.successors(currentNode.x, currentNode.y);

                for(i = 0, j = successorNodes.length; i < j; i++)
                {
                    pathNodes = this.node(currentNode, successorNodes[i]);

                    if(!AStar[pathNodes.value])
                    {
                        pathNodes.g = currentNode.g + this.manhattan(successorNodes[i], currentNode);
                        pathNodes.f = pathNodes.g + this.manhattan(successorNodes[i], endNode);

                        openArray.push(pathNodes);

                        AStar[pathNodes.value] = true;
                    }
                }

                closedArray.push(currentNode);
            }
        }

        return resultArray;
    },


    // Find adjacent available cells - returns every available North, South, East or West cell
    successors: function(x, y)
    {
        var    N = y - 1,
            S = y + 1,
            E = x + 1,
            W = x - 1,
            $N = N > -1 && this.inGrid(x, N),
            $S = S < this.rows && this.inGrid(x, S),
            $E = E < this.cols && this.inGrid(E, y),
            $W = W > -1 && this.inGrid(W, y),
            result = [];

        if($N)
        {
            result.push({x:x, y:N});
        }

        if($E)
        {
            result.push({x:E, y:y});
        }

        if($S)
        {
            result.push({x:x, y:S});
        }

        if($W)
        {
            result.push({x:W, y:y});
        }

        //this.diagonalSuccessors($N, $S, $E, $W, N, S, E, W, result);

        return result;
    },
    

    diagonalSuccessors: function($N, $S, $E, $W, N, S, E, W, result)
    {
        if($N)
        {
            if($E && this.inGrid(E, N))
            {
                result.push({x:E, y:N});
            }

            if($W && this.inGrid(W, N))
            {
                result.push({x:W, y:N});
            }
        }

        if($S)
        {
            if($E && this.inGrid(E, S))
            {
                result.push({x:E, y:S});
            }

            if($W && this.inGrid(W, S))
            {
                result.push({x:W, y:S});
            }
        }
    },


    diagonalSuccessors$: function($N, $S, $E, $W, N, S, E, W, result)
    {
        $N = N > -1;
        $S = S < this.rows;
        $E = E < this.cols;
        $W = W > -1;

        if($E)
        {
            if($N && this.inGrid(E, N))
            {
                result.push({x:E, y:N});
            }

            if($S && this.inGrid(E, S))
            {
                result.push({x:E, y:S});
            }
        }

        if($W)
        {
            if($N && this.inGrid(W, N))
            {
                result.push({x:W, y:N});
            }

            if($S && this.inGrid(W, S))
            {
                result.push({x:W, y:S});
            }
        }
    },


    // Distance functions, returns ideal distance from 2 points

    diagonal: function(point, end)
    {
        // diagonal movement
        return Math.max(Math.abs(Point.x - end.x), Math.abs(Point.y - end.y));
    },
    

    euclidean: function(point, end)
    {
        // diagonal movement using Euclide (AC = sqrt(AB^2 + BC^2))
        //    where AB = x2 - x1 and BC = y2 - y1 and AC will be [x3, y3]
        return Math.sqrt(Math.pow(point.x - end.x, 2) + Math.pow(point.y - end.y, 2));
    },
    

    manhattan: function(point, end)
    {
        // linear movement
        return Math.abs(point.x - end.x) + Math.abs(point.y - end.y);
    }

}

     

    and usage test:

     

    //pathFinderDemo.js

window.onload = function()
{
    var movementMap = 
    [
        [1, 1, 0, 1, 1, 1],
        [1, 1, 0, 1, 0, 1],
        [1, 1, 0, 1, 0, 1],
        [1, 1, 0, 1, 0, 1],
        [1, 1, 1, 1, 0, 1],
    ];

    for(y = 0; y < movementMap.length; y++)
    {
        // Loop Width
        for(x = 0; x < movementMap[0].length; x++)
        {
            var element = document.createElement('div');

            element.style.position    = 'absolute';
            element.style.left        = (x * 32) + 'px';
            element.style.top        = (y * 32) + 'px';
            element.style.width        = 32 + 'px';
            element.style.height    = 32 + 'px';
            element.id                = x + '_' + y;

            if(movementMap[y][x] == 1)
            {
                element.style.backgroundColor = 'blue';
            }
            else
            {
                element.style.backgroundColor = 'red';
            }

            document.getElementById('map').appendChild(element);
        }
    }

    var startPoint    = [0, 2];
    var endPoint    = [5, 4];

    if(path = new pathFinder(movementMap))
    {
        result = path.calculatePath(startPoint, endPoint, 'Manhattan');
    
        if(result.length == 0)
        {
            alert('damn');
        }
        else
        {
            for(var i = 0; i < result.length; i++)
            {
                x = result[i][0];
                y = result[i][1];

                var element = document.createElement('div');

                element.style.position    = 'absolute';
                element.style.left        = (x * 32) + 'px';
                element.style.top        = (y * 32) + 'px';
                element.style.width        = 32 + 'px';
                element.style.height    = 32 + 'px';
                element.id                = 'p_' + x + '_' + y;

                element.style.backgroundColor = 'green';

                element.style.textAlign    = 'center';

                element.innerHTML = i + 1;

                document.getElementById('map').appendChild(element);
            }
        }
    }

}

     

    and the basic html to let you see it:

     

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>

    <title> Pathfinder Demo </title>

    <meta name="author" content="" />
    <meta name="keywords" content="" />
    <meta name="description" content="" />

    <script src="pathFinder.js" type="text/javascript"></script>
    <script src="pathFinderDemo.js" type="text/javascript"></script>

</head>

<body>
    
    <div id="map"></div>

</body>

</html>

    [SOLVED] Microtime() not working :/

    in PHP Coding Help

    Posted

    Classes are pretty simple... If you have a directory for includes just make a new file and put in that class info. Then include and use it. E.g.

     

    <?php
include('../includes/core.php');
include('../includes/timing.php');

$timer = new Timer();

# All the rest of your page here

echo $timer->getTime();
?>

     

    The reason it is a bit more complicated is that it allows you to make new names (or something) - which is totally not required (not my class).

    [SOLVED] forcing a download

    in PHP Coding Help

    Posted

    I'm no expert at this sort of thing... but php.net has plenty of these scripts...

     

    <?php
$filename = "whatever.xxx";
$myFile = "/absolute/path/to/whatever.xxx";

$mm_type="application/octet-stream";

header("Cache-Control: public, must-revalidate");
header("Pragma: hack");
header("Content-Type: " . $mm_type);
header("Content-Length: " .(string)(filesize($myFile)) );
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary\n");

readfile($myFile);

?>

    [SOLVED] Microtime() not working :/

    in PHP Coding Help

    Posted

    Try this:

     

    <?php

class Timing
{
private $store;

public function __construct($name = 'default')
{
	$this->store[$name]['start'] = explode(' ', microtime());
}


public function stop($name = 'default')
{
	$this->store[$name]['stop'] = explode(' ', microtime());
}


public function getTime($name = 'default')
{
	if(!isset($this->store[$name]['stop']))
	{
		$this->stop($name);
	}

	$seconds = $this->store[$name]['stop'][1] - $this->store[$name]['start'][1];
	$micros  = $this->store[$name]['stop'][0] - $this->store[$name]['start'][0];

	return $seconds + $micros;
}
}

?>

     

    Usage:

     

    <?php
$timer = new Timer();

## Whatever.....

echo $timer->getTime();
?>

     

    You need to include the class, and then initialise the timer in your bootstrap/setup file.

    time comparison help

    in PHP Coding Help

    Posted

    You need to use the full data in your functions - i.e. pull a bit more from your database. E.g.

     

    <?php

$time = '14:26:13';
$date = '2008-09-01';
$timezone = 'GMT';

$new_time = strtotime($date.' '.$time.' '.$timezone);

?>

     

    Or better, you should store date and time together (datetime) and then pull them from the database using "SELECT UNIX_TIMESTAMP(`datetime_field`) WHERE ...."

     

     

    Web Robot?

    in PHP Coding Help

    Posted

    forget php (although it is possible and I have written classes for this before) and look to perl.

     

    Search CPAN for Mechanize and tokeparser. They are the packages that you need to get going. If you are a m$ user you will likely need cygwin or something to run perl.

     

    Please don't build a spambot with these tools...

    Problem passing data from php to mySql database - help!

    in PHP Coding Help

    Posted

    Dear god that's a lot of code... I would have to assume that the <form> elements are in your header / footer include files - although I don't have time to read 800 lines of code looking for them... You could also be using a framework with the helpers included for you - again, I don't know.

     

    Hopefully my previous post will have given you the most basic example possible and you can go from there.

     

    Good luck!

    Numerically sorting lists

    in PHP Coding Help

    Posted

    Very odd, I tested it using an array and it worked fine. You may be on a different PHP version to me, so I have made two changes to the core code - give them a go.

     

    <?php

print "The largest number in the file is:<br /><br />";

$bfile = array(
'none | 1',  
'none | 2', 
'none | 13',  
'none | 4', 
'none | 5',  
'none | 6', 
'none | 1010',  
'none | 950',  
'none | 93',  
'none | 8', 
'none | 11',  
'none | 12', 
'none | 3', 
'none | 14', 
'none | 16'
);

foreach($bfile as $key => $value)
{
$tmp = explode('|', $value);
$vals[] = trim($tmp[1]);
}

rsort($vals, SORT_NUMERIC);

echo $vals[0].'<br />';

    Problem passing data from php to mySql database - help!

    in PHP Coding Help

    Posted

    In order to submit any user input (e.g. textarea / select / input) you need to wrap your fields in a form. Below is a basic example which should allow you to see what is going on - the page simple submits to itself for now, but should get you going:

     

    <?php

$options = array(
1 => 'Bad', 
2 => 'Poor', 
3 => 'Average', 
4 => 'Good', 
5 => 'Excellent' 
);

if(isset($_POST['rateme']))
{
echo 'You clicked save! and chose '.$options[$_POST['rating']].'<br /><br />';

echo 'The posted data looks like this:</br />';
echo '<pre>';
	print_r($_POST);
echo '</pre>';
}

?>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">

<select name="rating">
<?php
foreach($options as $key => $value)
{
	echo '<option value="'.$key.'"';
		if((isset($_POST['rating']) AND $_POST['rating'] == $key) OR (!isset($_POST['rating']) AND $key == 3))
		{ 
			echo ' selected="selected"';
		}
	echo '>'.$value.'</option>';
}
?>
</select>

<input type="submit" name="rateme" value="Save" />

</form>

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