I just did something very similar to this on a page I'm working on. Try this :
while (list ($key, $val) = each ($the_array))
{
echo "<input type=\"checkbox\" name=file[] value=\"$val\">"
."Some text relating to $val...";
//etc ...
}
and
//inside some kind of if($_POST....) condition
$asize=sizeof($_POST['file']);
for($ii=0;$ii<$asize;$ii++)
{
some operation on $_POST['file'][$ii]
}
Ive tried declaring the checkbox name as an array
<input name=list[] type="checkbox" value="'.$ref_id.'">
but I get error on page message when I do it this way
Truthfully, I'm confused on your tag syntax:
value="'.$ref_id.'">
I'm pretty sloppy with quotes, especially when the HTML lets me get away with it! As a consequence, I don't know all the ins and outs of single and double quote combinations - just that sometimes they don't work as they theoretically should.
if you are echo-ing the statement, just escape the quotes (\") and try echo"<input name=\"list[]\" type=\"checkbox\" value=\"$ref_id\">";
If your code is not echo'd (i.e. in a plain HTML section of the page), try this:
<input name="list[]" type="checkbox" value="<?echo$ref_id?>">
Yeah I see what your getting at but I made sure it wasnt a quotes related thing, I tried all sorts of combinations and I viewed the source code of the html page produced by php and it looks fine
try this:
<input name="list" type="checkbox" value="<?php echo $ref_id; ?>" <?php if($_POST['list'] == $ref_id){echo "selected";}>
see if it works..
Originally posted by EvoRacer
try this:
<input name="list" type="checkbox" value="<?php echo $ref_id; ?>" <?php if($_POST['list'] == $ref_id){echo "selected";}>
see if it works..
Thats not quite what Im looking for, Im gonna put more of the code up to try clarify
1: a little javascript to let me check/uncheck all the boxes at once
<!-- Begin
function checkAll(field)
{
for (i = 0; i < field.length; i++)
field.checked = true ;
}
function uncheckAll(field)
{
for (i = 0; i < field.length; i++)
field[i].checked = false ;
}
// End -->
</script>2: call some info out of a database and assign a value for each checkbox
for($x=0;$x<$noofRows;$x++)
{
$ref_id= mysql_result($result,$x,'id');
echo '<input name=list type="checkbox"value="'.$ref_id.'">';
}
Call the Javascript to either check or uncheck all the boxes
<a href = "javascript:checkAll(document.myForm.list)">select all</a> / <a href = "javascript:uncheckAll(document.myForm.list)">unselect all</a></td>
This all works a treat, but how do i now capture the selected checkboxes when I submit the form?
If it is selected, it will be added to the $POST array. In your case, it each item will be in the $POST
array: more specifically $_POST
[0:n-1] where n is the size of the array.
try this on the page that receives the POST vars...:
if($POST
!=NULL)
print_r($_POST
);
If all is well, you should get something that looks like this:
Array( [0] => value1 [1] => value2 ...)
With this knowlege, use the for statement to iterate through each item of the array:
$asize=sizeof($POST
);
for($x;$x<$asize;$x++)
{
echo $_POST
[$x];
}
Hope this helps!
Originally posted by cnperry
If it is selected, it will be added to the $POST array. In your case, it each item will be in the $POST
array: more specifically $_POST
[0:n-1] where n is the size of the array.
try this on the page that receives the POST vars...:
if($POST
!=NULL)
print_r($_POST
);
If all is well, you should get something that looks like this:
Array( [0] => value1 [1] => value2 ...)
With this knowlege, use the for statement to iterate through each item of the array:
$asize=sizeof($POST
);
for($x=0;$x<$asize;$x++)
{
echo $_POST
[$x];
}
Hope this helps! [/B]
This is along the lines of what I did originally, the problem now is that this will work if I declare the checkboxe list as 'list[]' i.e
echo '<input name="list[]" type="checkbox" value="'.$ref_id.'">';
but by doing this the javascript to select/unseilect all of the boxes wont work. It will only work if I name the checkbox group 'list' without the bracketst i.e.
echo '<input name="list[]" type="checkbox" value="'.$ref_id.'">';
see what I mean??
For the javascript to check all checkboxes:
function checkAll() {
for (i=0,n=document.form1.elements.length;i<n;i++){
if (document.form1.elements[i].name.indexOf('usr[]') !=-1){
document.form1.elements[i].checked = true;
}
}
}
then you'd have your checkboxes:
<input type="checkbox" name="usr[]" value="<? echo $ref_id; ?>">
a button to toggle select all:
<a href="javascript:void(0);" onClick="checkAll();">check all</a>
as for the reference page:
<?
foreach ($usr as $line => $text){
echo $line . " => ". $text ."<br>\n";
}
?>
Originally posted by Prikid
For the javascript to check all checkboxes:
function checkAll() { for (i=0,n=document.form1.elements.length;i<n;i++){ if (document.form1.elements[i].name.indexOf('usr[]') !=-1){ document.form1.elements[i].checked = true; } } }then you'd have your checkboxes:
<input type="checkbox" name="usr[]" value="<? echo $ref_id; ?>">a button to toggle select all:
<a href="javascript:void(0);" onClick="checkAll();">check all</a>as for the reference page:
<? foreach ($usr as $line => $text){ echo $line . " => ". $text ."<br>\n"; } ?>[/B]
nope still gives me an error on page for the javascript, the php section catchs the individual checkboxes if I manually check them but when I use the call the checkAll function it dosnt work
:queasy: :bemused:
make sure your 'form' tag has 'name' value set to 'form1'
<form name="form1">
Legend.......... Works Perfectly!
Thanks to everyone else who contributed also!