Help with "Illegal offset type" error

chuckman · June 22, 2008

my code:

<?php
session_start();
include("function.php");
?>

<html>
<head>
<title>idk brought to you by chuckman.org</title>
</head>
<body>
<h1>idk</h1>
<?php
$comic = glob("images/*.jpg");

img($comic[$_SESSION['comic']],"");

if($_SESSION['comic'] != 0)
{
	a("back.php","Back to".$_SESSION['comic']-1);
}

a("forward.php","Forward to".$_SESSION['comic']+1);
?>

</body>
</html>

img() is a function defined in "function.php" so is a()

I want to know what I need to change in line 15

$comic[$_SESSION['comic']]

to make it work.. because I understand that the type of the character is wrong, but I don't know how to define it as an integer..

Stooney · June 22, 2008

$comic[$_SESSION['comic']]

I can't make out what is supposed to be going on here, but I'm pretty sure that's not correct syntax. Maybe this?

$comic.$_SESSION['comic']

As far as converting to int, try using intval().

chuckman · June 22, 2008

The purpose of the script, is for a comic, so when people come the are at the same spot there were at..

So $_SESSION['comic']

is supposed to hold a number value

and when it is in the array $comic it pulls up the right one

so let's say $_SESSION['comic'] is 3

that means that code will render $comic[3] and out put that one, which will use the img() function to place it on the page.

kenrbnsn · June 22, 2008

Please post the code for the functions.

Ken

chuckman · June 22, 2008

It's pretty long

<?php
if (stristr(htmlentities($_SERVER["PHP_SELF"]), "function.php")) 
{
    Header("Location: index.php");
    die();
}

else 
{

	/*
	Name: New Line
	Input: nl();
	Output: \n
	*/

	function nl() 
	{
		echo "\n";
	}

	/*
	Name: Link
	Input: a("http://chuckman.org ","Chuckman");
	Output: <a href=\"http://chuckman.org\">Chuckman</a>
	*/

	function a($f_tar, $f_ame) 
	{
		echo "<a href=\"".$f_tar."\">";
		echo $f_ame;
		echo "</a>";
		nl();
	}

	/*
	Name: Div
	Input: div(\"main\");
	Output: <div id=\"main\">
	*/

	function div($f_id) 
	{
		echo "<div id=\"".$f_id."\">";
		nl();
	}

	/*
	Name: End Div
	Input: enddiv();
	Output: </div>
	*/

	function enddiv() 
	{
		echo "</div>";
		nl();
	}

	/*
	Name: Break
	Input: br(3);
	Output: <br />\n<br />\n<br />\n
	*/

	function br($f_y) 
	{
		for ($f_i=1;$f_i<=$f_y;$f_i++) 
		{
			echo "<br />";
			nl();
		}
	}

	/*
	Name: Input
	Input: input(\"text\",\"username\", \"Username\")
	Output: <input type=\"text\" name=\"username\" value=\"Username\" /><br />
	NOTE: Changes if you add br and size
	*/

	function input($f_type, $f_ne, $f_value, $f_br="1", $f_size="") 
	{

		if (EMPTY($f_value)) 
		{
			if (EMPTY($f_size)) 
			{
				echo "<input name=\"$f_ne\" type=\"$f_type\" />";
			}

			else 
			{
				echo "<input name=\"$f_ne\" type=\"$f_type\" size=\"$f_size\" />";
			}
		}

		elseif (EMPTY($f_size)) 
		{
			echo "<input type=\"$f_type\" name=\"$f_ne\" value=\"$f_value\" />";
		}

		else 
		{
			echo "<input name=\"$f_ne\" type=\"$f_type\" size=\"$f_size\" value=\"$f_value\" />";
		}
	br($f_br);
	}

	/*
	Name: Form
	Input: form(\"post\",\"action.php\");
	Output: <form method=\"post\" action=\"action.php\">
	*/

	function form($f_method, $f_action) 
	{
		echo "<form method=\"$f_method\" action=\"$f_action\">";
		nl();
	}

	/*
	Name: End Form
	Input: endform();
	Output: </form>
	*/

	function endform($f_fvalue="Submit") 
	{
		echo "<input type=\"submit\" value=\"$f_fvalue\">";
		nl();
		echo "</form>";
		nl();
	}

	/*
	Name: Heading
	Input: h(3,\"Awesomeness\");
	Output: <h3>Awesomeness</h3>
	*/

	function h($f_num, $f_text) 
	{
		echo "<h".$f_num.">";
		echo $f_text;
		echo "</h".$f_num.">";
		nl();
	}

	/*
	Name: Doctype
	Input: dtd();
	Output: <!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd \">
	*/

	function dtd()
	{
		echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd \">";
		nl();
	}

	/*
	Name: HTML
	Input: html();
	Output: <html xmlns=\"http://www.w3.org/1999/xhtml\">
	*/

	function html() 
	{
		echo "<html xmlns=\"http://www.w3.org/1999/xhtml\">";
		nl();
	}

	/*
	Name: HTML
	Input: endhtml();
	Output: </html>
	*/

	function endhtml() 
	{
		echo "</html>";
		nl();
	}

	/*
	Name: Body
	Input: body();
	Output: <body>
	*/

	function body() 
	{
		echo "<body>";
		nl();
	}

	/*
	Name: Body
	Input: body();
	Output: <body>
	*/

	function endbody()
	{
		echo "</body>";
		nl();
	}

	/*
	Name: Head
	Input: head();
	Output: <head>
	*/

	function head() 
	{
		echo "<head>";
		nl();
	}

	/*
	Name: End Head
	Input: endhead();
	Output: </head>
	*/

	function endhead() 
	{
		echo "</head>";
		nl();
	}

	/*
	Name: Title
	Input: title(\"Cool Whip\");
	Output: <title>Cool Whip</title>
	*/

	function title($f_tname) 
	{
		echo "<title>";
		echo $f_tname;
		echo "</title>";
		nl();
	}

	/*
	Name: Meta
	Input: meta(\"Author\",\"Kaleb Mulder\");
	Output: <meta name=\"Author\" content=\"Kaleb Mulder\" />
	*/

	function meta($f_mname,$f_mcon) 
	{
		echo "<meta name=\"$f_mname\" content=\"$f_mcon\" />";
		nl();
	}

	/*
	Name: Encoding
	Input: enc();
	Output: <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
	*/

	function enc() 
	{
		echo "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />";
		nl();
	}

	/*
	Name: Stylesheet
	Input: style(\"css.css\");
	Output: <link rel=\"stylesheet\" type=\"text/css\" href=\"css/css.css\" />
	*/

	function style($f_src) 
	{
		echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"".$f_src."\" />";
		nl();
	}

	/*
	Name: Paragraph
	Input: p();
	Output: <p class=\"main\">
	*/

	function p($f_info) 
	{
		echo "<p class=\"main\">";
		echo $f_info;
		echo "</p>";
		nl();
	}


	/*
	Name: Unordered List
	Input: ul();
	Output: <ul>
	*/

	function ul() 
	{
		echo "<ul>";
		nl();
		nl();
	}

	/*
	Name: End Unordered List
	Input: endul();
	Output: </ul>
	*/

	function endul() 
	{
		echo "</ul>";
		nl();
	}

	/*
	Name: List Item
	Input: li();
	Output: <li>
	*/

	function li() 
	{
		echo "<li>";
		nl();
	}

	/*
	Name: End List Item
	Input: endli();
	Output: </li>
	*/

	function endli() 
	{
		echo "</li>";
		nl();
		nl();
	}

	/*
	Name: Font
	Input: f(\"u\",\"Underlined Text\");
	Output: <span class=\"u\">Underlined Text</span>
	Note: Function CSS is required for this function
	*/

	function f($f_ftype, $f_ut) 
	{
		echo "<span class=\"$f_ftype\" >";
		echo $f_ut;
		echo "</span>";
	}

	/*
	Name: Select
	Input: select(\"food\");
	Output: <select name=\"food\">
	*/

	function select($f_sname) 
	{
		echo "<select name=\"$f_sname\">";
		nl();
	}

	/*
	Name: End Select
	Input: endselect();
	Output: </select>
	*/

	function endselect() 
	{
		echo "</select>";
		nl();
	}

	/*
	Name: Option
	Input: option(\"Pizza\");
	Output: <option>Pizza</option>
	*/

	function option($f_val) 
	{
		echo "<option>";
		echo $f_val;
		echo "</option>";
		nl();
		nl();
	}

	/*
	Name: Text Area
	Input: option(\"30\",\"40\",\"shoes\",\"This is the text that goes in the textarea\");
	Output: <textarea rows=\"30\" cols=\"40\" name=\"shoes\">
	This is the text that goes in the textarea
	</textarea>
	NOTE: Variable is suggested for text
	*/

	function textarea($f_row,$f_col,$f_taname,$f_dtxt) 
	{
		echo "<textarea rows=\"$f_row\" cols=\"$f_col\" name=\"$f_taname\">";
		nl();
		echo $f_dtxt;
		nl();
		echo "</textarea>";
		br(1);
	}

	/*
	Name: Image
	Input: img("la.jpg","lalala")
	Output: <img src=\"lala.jpg\" alt=\"lalala\" />
	*/

	function img($f_src,$f_alt) 
	{
		echo "<img src=\"images/$f_src\" alt=\"$f_alt\" />";
		br(1);
	}

	function random_color() 
	{
		dechex(rand(0,hexdec(FFFFFF)), 6, "0", STR_PAD_LEFT);
	}

}

?>

kenrbnsn · June 22, 2008

All's I want to see were the two functions, not all of them. Seeing them, I see they don't have any affect on the problem.

You will have to put some debug code in to see what's in the SESSION array. Please add

<?php
echo '<pre>$_SESSION: ' . print_r($_SESSION,true) . '</pre>';
echo '<pre>$comic: ' . print_r($comic,true) . '</pre>';
?>

above where you're getting the error and post the results. Also, please post the exact error message you're getting.

Ken

chuckman · June 22, 2008

$_SESSION: Array

(

[comic] => Array

(

)

$comic: Array

(

)

Warning: Illegal offset type in /home/content/c/h/u/chuckman/html/idk/index.php on line 17

chuckman · June 22, 2008

Fixed my own problem.. thanks

<?php
session_start();
include("function.php");
?>

<html>
<head>
<title>idk brought to you by chuckman.org</title>
</head>
<body>
<h1>idk</h1>
<?php
if(!isset($_SESSION['comics'])) {
$_SESSION['comics'] = 0;
}
$comic = glob("images/*.jpg");

img($comic[$_SESSION['comic']],"");

if($_SESSION['comic'] != 0)
{
	a("back.php","Back to".$_SESSION['comic']-1);
}

a("forward.php","Forward to".$_SESSION['comic']+1);
?>

</body>
</html>

chuckman · June 22, 2008

never mind, still have the same problem.

chuckman · June 22, 2008

<?php
session_start();
include("function.php");
?>

<html>
<head>
<title>idk brought to you by chuckman.org</title>
</head>
<body>
<h1>idk</h1>
<?php
if(!isset($_SESSION['comics'])) {
$_SESSION['comics'] = 0;
}
$x = $_SESSION['comic'];
$comic = glob("images/*.jpg");
img($comic[$x],"");
if($_SESSION['comic'] != 0) {
a("back.php","Back to".($_SESSION['comic']-1));
}
        a("forward.php","Forward to".($_SESSION['comic']+1));
?>

</body>
</html>

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Help with "Illegal offset type" error

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