array question - experts needed

[pouncer]

say for e.g

 

i want to add an array mapping

 

$ratings = array("1" => "Poor");

 

how do i add more mappings to $ratings like that?

 

i want to add 2 => Good

[utexas_pjm]

<?php
$ratings[2] = "good";
$ratings[3] = "excellent";
// etc...
?>

 

Maybe I misunderstood the question?

 

Patrick

[pouncer]

thanks!

 

what if the array was initially empty like

 

$ratings = array();

 

can we still add mappings to it like u showed?

[utexas_pjm]

Yup.

[pouncer]

i gt this function

 

	function getArray($item_id) {
		$result = mysql_query("select count(*) AS tot_people_per_rating,rating FROM item_rating WHERE item_id='$item_id' GROUP BY rating");

		$list_all = array(1,2,3,4,5);
		$list_sel = array();

		$ratings = array(
				"1" => "Poor",
				"2" => "It's ok", 
				"3" => "Cool", 
				"4" => "Good", 
				"5" => "Excellent");

		$graph_data = array();

		$build_array_strings = "";

		while(list($tot_rating,$rating) = mysql_fetch_row($result)){
			$str = $rating . " => " . $tot_rating;
			$list_sel[] = $rating;

			$build_array_strings = $build_array_strings == "" ? $str : $build_array_strings . ", " . $str;

			$graph_data[$rating] = $tot_rating; 
		}

		$arr_diff = array_diff($list_all,$list_sel);

		for($i=1;$i<= count($arr_diff);$i++){
		   $str = $arr_diff[$i] . " => 0";
		   $build_array_strings = $build_array_strings == "" ? $str : $build_array_strings . ", " . $str;
		   
		   $graph_data[$arr_diff[$i]] = "0";
		}

		return $graph_data; 
	}

it returns the array perfectly cos i put echos in this class to test it etc.

 

but when i call the function like

 

$arr = $graph->getArray($item_id);

$test = array($arr);

echo "testtt" . $test[5];

 

it just echos testtt :s

[per1os]

Try this:

 

echo "testtt" . $test[0][5];

 

The line $test = array($arr);

 

Creates a new array with the first value containing an array. You effectively created a multi-dimensional array.

 

To avoid the multi-dimm array do this:

 

$arr = $graph->getArray($item_id);
$test = $arr;
echo "testtt" . $test[5];

[kenrbnsn]

You are making a two dimensional array with this code:

<?php
$arr = $graph->getArray($item_id);
$test = array($arr);
?>

do this instead:

<?php
$arr = $graph->getArray($item_id);
echo '<pre>' . print_r($arr,true) . '</pre>';
?>

This should dump to the screen what the array $arr contains.

 

Ken

[pouncer]

ok guys ive now got it to work but still a big problem

 

    <form name="form2" method="post" action="view_item_rating.php">
		      <div align="center" class="style74">
                   <input name="Submit2" type="submit" class="style74" value="View rating results!">
                   <?php
			   		$arr = $graph->getArray($item_id);
			   ?>
			   <input type='hidden' name='ar' value='<?php echo $arr; ?>'>
                   <br>
                </div>
		    </form>
<?php echo "tsting " . $arr[3]; ?> //THIS LINE ECHOS PERFECTLY!

 

im trying to send the array as a hidden value to view_item_rating.php

 

in  view_item_rating.php:

$test = $_POST['ar'];

echo $test[3];

it just echos nothing.. but a blank page :s

[per1os]

You cannot just pass an array and expect it to work lol, try this.

 

                   <input name="Submit2" type="submit" class="style74" value="View rating results!">
                   <?php
			   		$arr = $graph->getArray($item_id);
                foreach ($arr as $value) {
                      print '<input type="hidden" name="arr[]" value="'.$value.'" />';
             }
			   ?>
                   <br>
                </div>
		    </form>
<?php echo "tsting " . $arr[3]; ?> //THIS LINE ECHOS PERFECTLY!

 

See what happens.

[pouncer]

thanks buddy fore the reply and code.

 

it's just just giving me a blank page on view_item_rating.php

[per1os]

Maybe the code to view_item_rating.php would help?

[pouncer]

$test = $_POST['arr'];

echo $test[5];

 

that's all it is

[per1os]

$test = $_POST['arr'];

print 'test values ' . print_r($test,true);

 

Try that.

[pouncer]

i fixed it by just doing this

 

$arr = $graph->getArray($item_id);

 

for ($i = 0; $i <= 5; $i++) {

print '<input type="hidden" name="arr' . $i . '" value="'.$arr[$i].'" />';

}

 

 

 

then in the other file

 

$graph_data = array();

 

for ($i = 0; $i <= 5; $i++) {

$val = $_POST['arr' . $i];

 

$graph_data[$i] = $val;

}