I have a form in PHP. It is unsorted. I would like to sort it. How would I go by it. This is the following PHP code I have. Thanks for help in advance.
<select id="school_name" name="school_name">
<option value="">Select School</option>
<?php for($c=0; $c<sizeof($school_details); $c++){?>
<option value="<?php echo stripslashes($school_details[$c]["title"]); ?>"
<?php if($school_details[$c]["title"]==$appInfo["school_name"]){?> selected="selected" <?php } ?> ><?php echo stripslashes($school_details[$c]["title"]); ?>
</option>
<?php } ?>
</select>
try somthing like this:
$str = "<select id='school_name' name='school_name'>";
$options = "";
for($i = 0; $i<10;$i++)
{
$RandomNum = rand(0, 100);
$options = "" . $options . ("<option value='$RandomNum'> " . $RandomNum . "  </option>\n");
}
$optionsArray = explode("\n", $options);
natsort($optionsArray);
$sorted_option = implode("|",$optionsArray);
$select = $str.$sorted_option."</select>";
echo $select;
PHP provides a number of methods for sorting: http://www.php.net/manual/en/array.sorting.php
You could implement a user defined sort to achieve this. Assuming you want to sort by the value of the 'title' element you would simply add this before your opening select tag:
<?php
uasort($school_details,'cmp');
function cmp($a,$b){
if($a['title'] == $b['title']){return 0;}
return ($a['title'] < $b['title']) ? -1 : 1;
}
?>
Related
I'd like to add "selected" attribute to a combo box. This is my PHP:
if($results['status'] == 1)
{ $ok1= "selected"; }
else
{ $ok1= ""; }
if($results['status'] == 2)
{ $ok2= "selected"; }
else
{ $ok2= ""; }
if($results['status'] == 3)
{ $ok3= "selected"; }
else
{ $ok3= ""; }
if($results['status'] == 4)
{ $ok4= "selected"; }
else
{ $ok4= ""; }
I may have over hundreds of IF's.
I've tried this one, but It seems not working:
for($a=1; $a<=4; $a++){
if($results['status'] == $a)
{ $ok = "selected"; }
else
{ $ok = ""; }
}
I'd like to make it as simple as possible. maybe 1 or 2 line. Because I have many combo box that should be treated this way
Edit (My combo box):
<select>
<option value="1" <?php echo $ok1; ?>>A</option>
<option value="2" <?php echo $ok2; ?>>B</option>
<option value="3" <?php echo $ok3; ?>>C</option>
<option value="4" <?php echo $ok4; ?>>D</option>
</select>
Since $results['status'] can only have 1 value, use dynamic variable names to make your life easy!
// initialize all 4 to blank
for($a=1; $a<=4; $a++){
${"ok" . $a} = "";
}
// set the one that is selected
${"ok" . $results['status']} = "selected";
This answer is very scalable, you can just change the number on the "for" line from 4 to 1000 and it works with no extra code added.
You can do this way,
<?php
// status list array
$selectValues = array(1, 2, 3, 4);
echo '<select name="combo_name">';
foreach($selectValues as $value){
$selected = "";
if($results['status'] == $value){
$selected = ' selected="selected" ';
}
echo '<option '.$selected.' value="'.$value.'">'.$value.'</option>';
}
echo '</select>';
?>
All you have to do is make an array and loop through it-
<?php
$results_status = 3; // What ever your retrieve variable value is. In your case: `$results['status']`
$arr = array("1" => "A",
"2" => "B",
"3" => "C",
"4" => "D"
);
?>
<select>
<?php
foreach($arr as $key => $val){
$sel = ($results_status == $key) ? "selected='selected'" : "";
?>
<option value="<?php echo $key?>" <?php echo $sel; ?>><?php echo $val?></option>
<?php }?>
</select>
You need to check every time for the selected value in the combo box.
Hope this helps
$combolength - the number of options in combo
$ok = array_fill(0, $combolength - 1, '');
switch ($results['status']) {
case $results['status']:
$ok[$results['status']]= 'selected';
break;
}
I personally think "simplify" what you already have is not the way to go about this. If you are not using a framework, I think you should instead ask how to make your script reusable, especially since you say "I have many combo box(es) that should be treated this way." Not using a contained element like a function/method sounds like a lot of extra work from a hardcoding standpoint. I personally would create a class that you can make form fields standardized and that you can feed an array into with dynamic key/value arrays. Simple example:
/core/classes/Form.php
class Form
{
# The idea here is that you would have many methods to build form fields
# You can edit this as you please
public function select($settings)
{
$class = (!empty($settings['class']))? ' class="'.$settings['class'].'"':'';
$id = (!empty($settings['id']))? ' id="'.$settings['id'].'"':'';
$selected = (!empty($settings['selected']))? $settings['selected']:false;
$other = (!empty($settings['other']))? ' '.implode(' ',$settings['other']):'';
ob_start();
?>
<select name="<?php echo $settings['name']; ?>"<?php echo $other.$id.$class; ?>>
<?php foreach($settings['options'] as $key => $value) { ?>
<option value="<?php echo $key; ?>"<?php if($selected == $key) echo ' selected'; ?>><?php echo $value; ?></option>
<?php } ?>
</select>
<?php
$data = ob_get_contents();
ob_end_clean();
return $data;
}
}
To use:
# Include the class
require_once(__DIR__.'/core/classes/Form.php');
# You can use $form = new Form(); echo $form->select(...etc.
# but I am just doing this way for demonstration
echo (new Form())->select(array(
'name'=>'status',
'class'=>'classes here',
'id'=>'select1',
'other'=>array(
'data-instructions=\'{"stuff":["things"]}\'',
'onchange="this.style.borderColor=\'red\';this.style.fontSize=\'30px\'"'
),
# Options can be assign database returned arrays
'options'=>array(
'_'=>'Select',
1=>'A',
2=>'B',
3=>'C',
4=>'D'
),
'selected'=>((!empty($results['status']))? $results['status'] : '_')
));
Gives you:
<select name="status" data-instructions='{"stuff":["things"]}' onchange="this.style.borderColor='red';this.style.fontSize='30px'" id="select1" class="classes here">
<option value="_">Select</option>
<option value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
I Wanted to make a function from where i can get date , month , year
but i m unable to write functions for that also i don't know how to call those function in Drop down menus
for example
function get_date(){
for($i=1;$i<31;$i++){?>
<?php return '<option value="$i"> $i </option>';
}
now if i called it in select menu
<select >
echo get_date();
</select>
it returns echo $i kindly guide me where i went wrong
Try This
<?php
function get_date()
{
$var="";
for ($i = 1; $i < 31; $i++) {
$num_padded=sprintf("%02d", $i);
$var .='<option value="'.$i.'"> '.$num_padded.' </option>';
}
return $var;
}
?>
<select >
<?php echo get_date(); ?>
</select>
This one for month
<?php
function get_month()
{
$var="";
for ($m=1; $m<=12; $m++) {
$var .= '<option value="'.$m.'">'.date('F', mktime(0,0,0,$m, 1, date('Y'))).' </option>';
}
return $var;
}
?>
<select >
<?php echo get_month(); ?>
</select>
This one for Year
<?php
function get_year($start,$end){
$var="";
while($start <= $end){
$var .="<option value=".$start.">".$start."</option>";
$start++;
}
return $var;
}
?>
<select >
<?php echo get_year(1988,2000); ?>
</select>
Using variables in strings only works when using double quotes ("). Try this:
function get_date(){
$dates = "";
for($i=1;$i<31;$i++){
$dates .= "<option value='$i'> $i </option>";
}
return $dates;
}
Also, there is no need to use php tags in functions.
To call the function you need to put the echo between php tags
<select>
<?php echo get_date(); ?>
</select>
Create a string with all options and then return
function get_date(){
$options = "";
for($i=1;$i<31;$i++){
$options .= "<option value='$i'>$i</option>";
}
return $options;
}
And then print like this
<select name="nameofdropdown" id="idofdropdown">
<?php echo get_date(); ?>
</select>
Check your errors
If you return if immediate return and stop iterations.
Php variables inside singel quotes will not evaluates like '$i' it must be "$i" or "'$i'"within single qotes
Use php tag <?php ?> to print function returned value.
try this
function get_date(){
$date = "";
for($i=1;$i<31;$i++){
$date .= '<option value="'.$i.'>'.$i.'</option>';
}
return $date;
}
Try
function get_date(){
for($i=1;$i<31;$i++){?>
<?php return '<option value="'.$i.'"> '.$i.' </option>';
}
I have an option menu as follows:
<select name="selCycle" id="selCycle" onChange="formFilter.submit()">
<option value="%">all cycles</option>
<?php
do {
?>
<option value="<?php echo $row_Recordset2['Cycle'] ?>"
<?php
if ($varCycle_DetailRS4 == $row_Recordset2['Cycle']) {
echo 'selected';
} elseif ($varCycle2_DetailRS4 == $row_Recordset2['Cycle']) {
echo 'selected';
} else {
echo '';
}
?>
>
<?php echo $row_Recordset2['Cycle'] ?>
</option>
<?php
} while ($row_Recordset2 = mysql_fetch_assoc($Recordset2));
$rows = mysql_num_rows($Recordset2);
if ($rows > 0) {
mysql_data_seek($Recordset2, 0);
$row_Recordset2 = mysql_fetch_assoc($Recordset2);
}
?>
</select>
Currently, the default selection is showing all records. I would like for the default to be the latest set of data equal to:
<?php echo $row_RecordsetCycle['Cycle']; ?>
So option menu would list 1,2,3,4,5 with 5 being the default when the page loads. User can then pick any option available. is set to last record in table with a limit of 1 so it will always echo the last record, which composes the option menu.
Help please. What should I edit so that the one record in
<?php echo $row_RecordsetCycle['Cycle']; ?>
is the default or selected option menu when the page loads? Currently, the default just shows all records and is extremely slow to load, hence why I want the latest record to be the default.
I took a stab at rewriting this. (code at the end)
the first thing I did was turn your do_while loop into a while loop as I think it was adding unnecessary confusion to the code
after doing that I moved some code
$rows = mysql_num_rows($Recordset2);
if ($rows > 0) {
mysql_data_seek($Recordset2, 0);
$row_Recordset2 = mysql_fetch_assoc($Recordset2);
}
above the while loop as I thought it was needed to "prime the pump" of the while loop
I also pulled the
if ($varCycle_DetailRS4 == $row_Recordset2['Cycle']) {
return ' selected';
} elseif ($varCycle2_DetailRS4 == $row_Recordset2['Cycle']) {
return ' selected';
} else {
return '';
}
out into a function so as to simplify the code further
now here come my assumptions I assumed that $varCycle_DetailRS4 was the last value and that $varCycle2_DetailRS4 was the currentlySelected that was set befor the code provided;
if that is the case and that $varCycle2_DetailRS4 would be unset if it was the first then all that would need to be done is to slightly modify the isSelected to only set one option as selected.
<?php
function isSelect($value)
{
$lastValue = $varCycle_DetailRS4;
$currentlySelected = $varCycle2_DetailRS4;
if(isset($currentlySelected))
{
$selectValue = $currentlySelected;
}
else
{
$selectValue = $lastValue;
}
if ($selectValue == $value) {
return ' selected';
} else {
return '';
}
}
?>
<select name="selCycle" id="selCycle" onChange="formFilter.submit()">
<option value="%">all cycles</option>
<?php
$rows = mysql_num_rows($Recordset2);
if ($rows > 0) {
mysql_data_seek($Recordset2, 0);
$row_Recordset2 = mysql_fetch_assoc($Recordset2);
}
while ($row_Recordset2 = mysql_fetch_assoc($Recordset2))
{
$value = $row_Recordset2['Cycle']
echo " <option value=\"".$value."\"".isSelect($value).">".$value."</option>/n";
} ;
?>
</select>
Try using end() to get the last array:
<?php
$arr =array(1,2,3,4,5);
$last = end($arr);
?>
<select name="selCycle" id="selCycle" onChange="formFilter.submit()">
<option value="%">all cycles</option>
<?php foreach($arr as $key=>$val):
if(in_array("$last", array($val))==true){
echo '<option value="" selected="selected">'.$val.'</option>';
continue;
}
echo '<option>'.$val.'</option>';
endforeach; ?>
</select>
Stop using mysql extension, use pdo or mysqli. Using your question code, it should be:
$row_Recordset2 = mysql_fetch_assoc($Recordset2);
$last = end($row_Recordset2);
foreach($row_Recordset2 as $key=>$val){
//other code
if(in_array("$last", array($val))==true){
echo '<option value="" selected="selected">'.$val.'</option>';
continue;
}
echo '<option>'.$val.'</option>'
}
Working Demo
I am trying to fillup two select boxes using the result of a mysql select query. I run the query once and use the output variable to loop and set options of select tag accordingly. The problem is, first select box gets populated as expected but the second one does not. It remains empty whatsoever. Heres my code
<?php
$con = mysql_connect('localhost','root','') or die('Could Not Connect'.mysql_error());
mysql_select_db('irctc', $con)or die('Could Not Select'.mysql_error());;
$result = mysql_query("select * from stationcodes", $con)or die('Could not select'.mysql_error());
?>
<html>
<head>
</head>
<body>
<table>
<tr>
<td>Source</td>
<td>:-</td>
<td><select id='src'>
<option value=''>Select Source Station</option>
<?php while($row = mysql_fetch_array($result))
{ ?>
<option value='<?php echo $row['StationCode']; ?>'><?php echo $row['StationName']; ?></option>
<?php } ?>
</select>
</td>
</tr>
<tr>
<td>Destination</td>
<td>:-</td>
<td><select id='dst'>
<option value=''>Select Destination Station</option>
<?php while($row = mysql_fetch_array($result))
{ ?>
<option value='<?php echo $row['StationCode']; ?>'><?php echo $row['StationName']; ?></option>
<?php } ?>
</select>
</td>
</tr>
</table>
</body>
</html>
You need to "rewind" data pointer back to the beginning before starting to iterate over the results again. Use mysql_data_seek(0); to do that, before building your "Destination":
<td><select id='dst'>
<option value=''>Select Destination Station</option>
<?php mysql_data_seek(0); // reset data pointer to 1st row
while($row = mysql_fetch_array($result))
{ ?>
<option value='<?php echo $row['StationCode']; ?>'><?php echo $row['StationName']; ?></option>
<?php } ?>
</select>
</td>
Also do not use mysql_. Switch to mysqli_ or PDO. and it would help you to separate code from view and use any type of template engine (like Smarty)
You need to either rerun the query before the second select box is rendered or to cache its results in an array first. Once you use mysql_fetch_* it has been read and you need to rewind the cursor or just start again/
In addition, stay away from mysql_* and use PDO or mysqli instead.
When you get to the second select box, all records are already fetched, so nothing will happen there.
What you should do is fetch al records into a array before you start the html code.
Then in the html code use a foreach statement to loop over the array.
Store your database result in an array so that you can use it multiple times:
$records = array();
while ($row = mysql_fetch_array($result)) $records[] = $row;
And to avoid writing the same algorithm multiple times, define a function that you call instead, for example:
function select($attrs, $options, $selected=null) {
$ret = '<select';
if (is_array($attrs)) {
foreach ($attrs as $name => $val) {
$ret .= ' '.htmlspecialchars($name).'="'.htmlspecialchars($value);
}
}
$ret .= '>';
foreach ($options as $option) {
$ret .= '<option';
if (isset($option['value'])) {
$ret .= ' value="'.htmlspecialchars($option['value']).'"';
if ($selected === $option['value']) {
$ret .= ' selected="selected"';
}
}
$ret .= '>';
if (isset($option['label'])) {
$ret .= htmlspecialchars($option['label']);
}
$ret .= '</option>';
}
$ret .= '</select>';
return $ret;
}
Then all you need to do is call this function with different parameters:
$options = array();
while ($row = mysql_fetch_array($result)) {
$options[] = array(
'value' => $row['StationCode'],
'label' => $row['StationName']
}
}
$srcOptions = array_merge(array(array('label'=>'Select Source Station')), $options);
echo select(array('id'=>'src'), $srcOptions);
$dstOptions = array_merge(array(array('label'=>'Select Destination Station')), $options);
echo select(array('id'=>'dst'), $dstOptions);
I have a system where I rearrange navigational items.
It stores the new order in an array and then I use a for loop to go through the array and update the database.
<?php
$apageid = array();
$apagename = array();
$apageorder = array();
$q = "SELECT g.id, g.title, n.order FROM tbl_general g INNER JOIN tbl_navigation n ON n.pageid = g.id WHERE n.type = '$_SESSION[parent]' ORDER BY n.order";
$return = $database->query($q);
while($row=mysql_fetch_assoc($return)){
$apageid[] = $row['id'];
$apagename[] = $row['title'];
$apageorder[] = $row['order'];
}
$count = count($apageid);
$bpageid = array();
$bpageorder = array();
?>
<div class="form-holder">
<?php
//run through each page one at a time and update the order of the menu
mysql_data_seek( $return, 0 ); //reset the pointer to do the same query
$i = 0; //the count for saving the new configuration
while($row=mysql_fetch_assoc($return)){
$id = $row['id'];
$title = $row['title'];
$order = $row['order'];
?>
<div class="form-row">
<div class="form-label">
Page Name
</div>
<div class="form-field">
<select class="select-small" name="<?php echo $bpageid[$i]; ?>">
<?php
for($j=0; $j<$count; $j++){
if($apageid[$j] == $id) {
$selected = true;
} else {
$selected = false;
}
?>
<option value="<?php echo $apageid[$j]; ?>" <? echo ($selected == true) ? 'selected="selected"' : ''; ?>><?php echo $apagename[$j]; ?></option>
<?php
}
?>
</select>
<select class="select-small" name="<?php echo $bpageorder[$i]; ?>">
<?php
for($k=0; $k<$count; $k++){
if($apageorder[$k] == $order) {
$selected = true;
} else {
$selected = false;
}
?>
<option value="<?php echo $apageorder[$k]; ?>" <? echo ($selected == true) ? 'selected="selected"' : ''; ?>><?php echo $apageorder[$k]; ?></option>
<?php
}
?>
</select>
</div>
</div>
<?php
$i++;
}
?>
This first chunk of code is the menu where you can reorder items.
Initially it loads up the current select and allows you to change the ordering.
function reorderChildren($pageid, $pageorder){
global $database;
$count = count($pageid);
//run through each page one at a time and update the order of the menu
for($i=0; $i<$count; $i++){
//set a few variables
$pid = $pageid[$i];
$porder = $pageorder[$i];
echo "pid = $pid porder = $porder";
$q = "UPDATE tbl_navigation SET order = '$porder' WHERE pageid = '$pid' AND type = '$_SESSION[parent]'";
$database->query($q);
}
return 0;
}
The information then ends up being passed here and the problem appears to be the for loop is never executed.
Can anyone see why this would be?
It's not the naming used, I've checked them.
Am I storing information in the arrays correctly?
Can I make it clear that it's $bpageid and $bpageorder that are the arrays carrying the information forward.
Thanks!
Was a simple fix!
The problem was that the select name needed to be just name="bpageid[]" rather than what I listed above. Silly!
You have just initilized $bpageid = array(); at top after first while loop.No value is assigned
after that you using
<select class="select-small" name="<?php echo $bpageid[$i]; ?>">
but no value is in $bpageid[$i] so name of this select box is blank.
It might be problem. check this and do as required.
you could try to construct a json from the options of the select element store it to a hidden field or send ajax request to php script for processing , order could be made from a "weight" value 1,2,3 etc.... sort it with php and loop to display