Printing the contents of the form variable...

bhasheth

Hello Friends,

When I print the form varible passed to the mod.php, it is also printing some extra char.

Follwing is a excerpt of the code.
// bsc.php
<?php
........... some code ....
print("<form name=$frm_nm action=\"mod.php\" method=post>");
.................. whole lot of cod .............

print("<input type=submit name=ok value=OK>");
</form>

?>

// following is the ony thing in mod.php

<?php
print $POST['hdnRowsSem_1'];
print $POST['hdnRowsSem_2'];

The output is something like this.
9<tr4<tr // have not clue where " <tr " is coming from.

But,

When added the to the print statements as follows, it prints correctly.

print $POST['hdnRowsSem_1']." ";
print $POST['hdnRowsSem_2'] ." ";

The output is ....
9 // without those extra characters.
4 // without those extra characters.

Can some one tell me please, why is it printing extra chars when and tags not included?

Thanks.

Mega

.................. whole lot of cod .............

alrite captain birdseye hows it goin?

<?php 
........... some code .... 
print("<form name=$frm_nm action=\"mod.php\" method=post>"); 
.................. whole lot of cod ............. 

print("<input type=submit name=ok value=OK>"); 
</form> 
?>

that last </form> is probably a mistake but still:

<?php 
echo <<<EOF
<form name="$frm_nm action="mod.php" method="post">
<input type="submit" name="ok" value="OK">
</form> 
EOF;
?>

nice easy to read code 🙂

you haven't listed any of the fields you've echo'd so i cant help u there 🙁

the rest of ur code wud help me out:

also:

echo  "{$_POST['hdnRowsSem_1']}<p><br>
{$_POST['hdnRowsSem_2']}<p><br>";

is prefered 🙂

bhasheth

Hello Mega,

I don't have anything else in mod.php, apart from these print statmetns.

<?php
print $POST['hdnRowsSem_1'];
print $POST['hdnRowsSem_2'];
?>

My question is about why mod.php printed extra characters i.e. <tr when I didn't add in the above print statements.

The out was as follows. (pls. notice <tr in it)

9<tr4<tr

But, when I added in the print stat. then these characters were disappeared. and output was correct, as follows.
9
4

I will repet my que. Why <tr was added in my output, when I don't have and tags print statement?

Mega

k, $_POST collects post data, therefore you must have more fields.

One named 'hdnRowsSem_1' and another named ''hdnRowsSem_2'

can i c ur code for them plz?

🙂

bhasheth

I haven't paste whole code as it will be quite a lot... .... I'm afraid even this is also too much .....

<?php

$frm_nm = "frm_bsc_cs"; // BSc - Computer Science.

print("<form name=$frm_nm action=\"mod.php\" method=post>");
print("<table name=outer width=100% callspacing=1 callpadding=1 border=1>");
print("<tr>");
print("<td width=50%>");
bld_tbl(tblSem1, 1, chk_sem1, hdn_sem1, $ruleSem1Min, $ruleSem1Max );
print("<td width=50%>");
bld_tbl(tblSem2, 2, chk_sem2, hdn_sem2, $ruleSem2Min, $ruleSem2Max );
print("</tr>");
...................... more code.............

printf("</table>");
print("</form>");

function bld_tbl($tblName, $semVal, $chbName, $hdn_sem_, $ruleMin, $ruleMax){
global $sess_prog;
global $link;
global $sess_part;
/ global $ruleSem1Min;
global $ruleSem1Max;
global $ruleSem2Min;
global $ruleSem2Max; /

$modStmt = "select mod_id, title, mod_wt from modid_titles_2002_2003 where prog = \"$sess_prog\" and part = 					\"$sess_part\" and semester = \"$semVal\" ";

$result = mysql_query($modStmt, $link);

// Check to see if you *did* get a result:

/ echo $tblName . ' ' . $semVal . ' ' . $chbName .' ' . $ruleMin . ' ' . $ruleMax . ' ' . $sess_prog . ' ' . $link . ' ' . $sess_part; /
/* echo " tblName : $tblName ";
echo "semVal : $semVal ";
echo "chbName: $chbName " ;
echo "ruleMin: $ruleMin "; // not returned when run in NN
echo "ruleMax: $ruleMax "; // not returned when run in NN
echo "sess_prog: $sess_prog "; // not returned when run in NN
echo "link : $link ";
echo "sess_part: $sess_part "; // not returned when run in NN

*/
if(!$result) {
echo 'Query: ' . $modStmt . ' failed.';
// No sense in continuing if the query failed:

return;
}

$num_row = mysql_num_rows($result);

if(!mysql_num_rows($result)) {
    echo 'Query: ' . $modStmt . ' returned no rows.';
    return;}
else{
	// these are trackd for use in the mod.php file to run the for loop accroding to number of rows in each sem.

	$hdnRowsSem = "hdnRowsSem_" . $semVal;
	$hdnRowNum = mysql_num_rows($result);
}

print("<table name=$tblName width=100% cellspacing=\"2\" cellpadding=\"2\">");
print("<tr bgcolor=\"#FFDCB9\">"); 
	print("<td colspan=4 align=center > ");
		print("<b>Semester $semVal </b>    (Select total modular weight between $ruleMin and $ruleMax."); 
		print("<input type=hidden name=$hdnRowsSem value=$hdnRowNum");
	// print(" $hdnRowsSem and  $hdnRowNum </td> </tr>");
print("<tr bgcolor=\"#FFDCB9\"> <th colspan=4 align=center > </th> </tr>")   ;
print("<tr bgcolor=\"#FFCC99\" border=1> "); 
	print("<th> Module Code </th>");
	print("<th> Module Name </th>");
	print("<th> Weight  </th>");
	print("<th> Select $hdnRowsSem </th>");
print("</tr>");

for ($i=0; $i < $num_row ; $i++){
   $row = mysql_fetch_array($result);
   print("<tr>");
		print("<td width=17%> $row[mod_id]");
		$hdn_mod = ($hdn_sem_ . $i);
		print("<input type=hidden name=$hdn_mod value=$row[mod_id] </td>");

		print("<td> $row[title] </td>");

		print("<td width=8%> $row[mod_wt] </td>");

		$chk_name = $chbName. $i;
	    print("<td width=8%><input type=checkbox name=$chk_name onClick=\"fn_chk(this,$row[mod_wt],$semVal);\"></td>");
		print("</tr>");
}  // end of for loop

print("</table> </td>");

} / ------- end of funciton bld_tbl() ----- /

Mega

this is to be taken as friendly advice, not as me bitchin 🙂

global $sess_prog; 
global $link; 
global $sess_part; 
/* global $ruleSem1Min; 
global $ruleSem1Max; 
global $ruleSem2Min; 
global $ruleSem2Max;

is the same as

global $sess_prog, $link, $sess_part, $ruleSem1Max, $ruleSem2Min, $ruleSem2Max;

3) always make your functions return and never echo, it makes life easier 🙂

function afunction(){
$text = "hi";
return $text;
}

NOT

function afunction(){
$text = "hi";
echo $text;
}

3) use this method for large blocks of text:

echo <<<EOF
<table name=$tblName width=100% cellspacing="2" cellpadding="2"> 
<tr bgcolor="#FFDCB9"> 
<td colspan=4 align=center >  

<b>Semester $semVal </b> (Select total modular weight between $ruleMin and $ruleMax. 
<input type=hidden name=$hdnRowsSem value=$hdnRowNum 
//  $hdnRowsSem and $hdnRowNum </td> </tr> 
<tr bgcolor="#FFDCB9"> <th colspan=4 align=center > </th> </tr>
<tr bgcolor="#FFCC99" border=1>  

<th> Module Code </th> 
<th> Module Name </th> 
<th> Weight </th> 
<th> Select $hdnRowsSem </th> 
</tr>
EOF;

4) instead of having big blocks of code inbetween html, use functions instead, or generate all your code and variables before beginning code output.

🙂