I have a form that i pull data from the database and fill in all the fields for a user to edit an existing record. It looks like this currently to set the radio button:
<input type="radio" id="statusActive" value="1" name="status" <?php if ($departmentData->thresholdActive == "1"){ echo 'checked'; }else{ echo ''; } ?>> Active
What would be the Ternary Logic approach to say:
If POST is true, us the post data else use the one from the database?
<input type="radio"
id="statusActive"
value="1"
name="status"
<?php echo ($departmentData->thresholdActive == "1") ? 'checked' : ''; ?>
>
A ternary expression using the following
if ($departmentData->thresholdActive == "1")
{
echo 'checked';
}
else
{
echo '';
}
Would be
echo $departmentData->thresholdActive == "1" ? 'checked' : '';
"Ternary logic" - you probably want
<?php echo ($departmentData->thresholdActive == "1")? 'checked':'';?>
But if you first want to check whether POST is true, it would be cleaner to so something like
(isset($_POST))?$_POST['index'] : $dbValue;
Where 'index' refers to a specific post variable (which I assume is present when POST is set; you didn't specify whether to check for a specific POST variable so it's hard to guess); and assumes that you know how to set $dbValue with a "value from the database"
Related
How to read if a checkbox is checked in PHP?
If your HTML page looks like this:
<input type="checkbox" name="test" value="value1">
After submitting the form you can check it with:
isset($_POST['test'])
or
if ($_POST['test'] == 'value1') ...
Zend Framework use a nice hack on checkboxes, which you can also do yourself:
Every checkbox generated is associated with a hidden field of the same name, placed just before the checkbox, and with a value of "0". Then if your checkbox as the value "1", you'll always get the '0' or '1' value in the resulting GET or POST
<input type="hidden" name="foo" value="0" />
<input type="checkbox" name="foo" value="1">
When using checkboxes as an array:
<input type="checkbox" name="food[]" value="Orange">
<input type="checkbox" name="food[]" value="Apple">
You should use in_array():
if(in_array('Orange', $_POST['food'])){
echo 'Orange was checked!';
}
Remember to check the array is set first, such as:
if(isset($_POST['food']) && in_array(...
Let your html for your checkbox will be like
<input type="checkbox" name="check1">
Then after submitting your form you need to check like
if (isset($_POST['check1'])) {
// Checkbox is selected
} else {
// Alternate code
}
Assuming that check1 should be your checkbox name.And if your form submitting method is GET then you need to check with $_GET variables like
if (isset($_GET['check1'])) {
// Checkbox is selected
}
$check_value = isset($_POST['my_checkbox_name']) ? 1 : 0;
I've been using this trick for several years and it works perfectly without any problem for checked/unchecked checkbox status while using with PHP and Database.
HTML Code: (for Add Page)
<input name="status" type="checkbox" value="1" checked>
Hint: remove checked if you want to show it as unchecked by default
HTML Code: (for Edit Page)
<input name="status" type="checkbox" value="1"
<?php if ($row['status'] == 1) { echo "checked='checked'"; } ?>>
PHP Code: (use for Add/Edit pages)
$status = $_POST['status'];
if ($status == 1) {
$status = 1;
} else {
$status = 0;
}
Hint: There will always be empty value unless user checked it. So, we already have PHP code to catch it else keep the value to 0. Then, simply use the $status variable for database.
To check if a checkbox is checked use empty()
When the form is submitted, the checkbox will ALWAYS be set, because ALL POST variables will be sent with the form.
Check if checkbox is checked with empty as followed:
//Check if checkbox is checked
if(!empty($_POST['checkbox'])){
#Checkbox selected code
} else {
#Checkbox not selected code
}
You can check the corresponding value as being set and non-empty in either the $_POST or $_GET array depending on your form's action.
i.e.: With a POST form using a name of "test" (i.e.: <input type="checkbox" name="test"> , you'd use:
if(isset($_POST['test']) {
// The checkbox was enabled...
}
You can do it with the short if:
$check_value = isset($_POST['my_checkbox_name']) ? 1 : 0;
or with the new PHP7 Null coalescing operator
$check_value = $_POST['my_checkbox_name'] ?? 0;
Learn about isset which is a built in "function" that can be used in if statements to tell if a variable has been used or set
Example:
if(isset($_POST["testvariabel"]))
{
echo "testvariabel has been set!";
}
Well, the above examples work only when you want to INSERT a value, not useful for UPDATE different values to different columns, so here is my little trick to update:
//EMPTY ALL VALUES TO 0
$queryMU ='UPDATE '.$db->dbprefix().'settings SET menu_news = 0, menu_gallery = 0, menu_events = 0, menu_contact = 0';
$stmtMU = $db->prepare($queryMU);
$stmtMU->execute();
if(!empty($_POST['check_menus'])) {
foreach($_POST['check_menus'] as $checkU) {
try {
//UPDATE only the values checked
$queryMU ='UPDATE '.$db->dbprefix().'settings SET '.$checkU.'= 1';
$stmtMU = $db->prepare($queryMU);
$stmtMU->execute();
} catch(PDOException $e) {
$msg = 'Error: ' . $e->getMessage();}
}
}
<input type="checkbox" value="menu_news" name="check_menus[]" />
<input type="checkbox" value="menu_gallery" name="check_menus[]" />
....
The secret is just update all VALUES first (in this case to 0), and since the will only send the checked values, that means everything you get should be set to 1, so everything you get set it to 1.
Example is PHP but applies for everything.
Have fun :)
$is_checked = isset($_POST['your_checkbox_name']) &&
$_POST['your_checkbox_name'] == 'on';
Short circuit evaluation will take care so that you don't access your_checkbox_name when it was not submitted.
A minimalistic boolean check with switch position retaining
<?php
$checked = ($_POST['foo'] == ' checked');
?>
<input type="checkbox" name="foo" value=" checked"<?=$_POST['foo']?>>
<?php
if (isset($_POST['add'])) {
$nama = $_POST['name'];
$subscribe = isset($_POST['subscribe']) ? $_POST['subscribe'] : "Not Checked";
echo "Name: {$nama} <br />";
echo "Subscribe: {$subscribe}";
echo "<hr />";
}
?>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="POST" >
<input type="text" name="name" /> <br />
<input type="checkbox" name="subscribe" value="news" /> News <br />
<input type="submit" name="add" value="Save" />
</form>
<form>
<input type="check" id=chk1 value="1">
<input type="check" id=chk2 value="1">
<input type="check" id=chk3 value="1">
</form>
when you check on chk2 you can see values as:
<?php
foreach($_POST as $key=>$value)
{
if(isset($key))
$$key=strip_tags($value);
}
insert into table (chk1,chk2,chk3) values ('','1','');
?>
in BS3 you can put
<?php
$checked="hola";
$exenta = $datosOrdenCompra[0]['exenta'];
var_dump($datosOrdenCompra[0]['exenta']);
if(isset($datosOrdenCompra[0]['exenta']) and $datosOrdenCompra[0]['exenta'] == 1){
$checked="on";
}else{
$checked="off";
}
?>
<input type="checkbox" id="exenta" name="exenta" <?php echo $checked;?> > <span class="label-text"> Exenta</span>
Please Note the usage of isset($datosOrdenCompra[0]['exenta'])
Wordpress have the checked() function.
Reference: https://developer.wordpress.org/reference/functions/checked/
checked( mixed $checked, mixed $current = true, bool $echo = true )
Description
Compares the first two arguments and if identical marks as checked
Parameters
$checked
(mixed) (Required) One of the values to compare
$current
(mixed) (Optional) (true) The other value to compare if not just true
Default value: true
$echo
(bool) (Optional) Whether to echo or just return the string
Default value: true
Return #Return
(string) html attribute or empty string
i have fixed it into a PHP form with a checkbox
$categories = get_terms( ['taxonomy' => 'product_cat', 'hide_empty' => false] );
foreach ($categories as $categorie) {
echo "<input type="checkbox" value="$categorie->term_taxonomy_id" name="catselected[]"> $categorie->slug";
}
This way i add it to the Woocommerce tabel.
wp_set_post_terms( $product_id, $_POST['catselected'], 'product_cat' );
filter_input(INPUT_POST, 'checkbox_name', FILTER_DEFAULT, FILTER_FORCE_ARRAY)
<?php
if(isset($_POST['nameCheckbox'])){
$_SESSION['fr_nameCheckbox'] = true;
}
?>
<input type="checkbox" name="nameCheckbox"
<?php
if(isset($_SESSION['fr_nameCheckbox'])){
echo 'checked';
unset($_SESSION['fr_nameCheckbox']);
}
?>
you should give name to your input .
then which box is clicked you will receive 'on' in your choose method
Array
(
[shch] => on
[foch] => on
[ins_id] => #
[ins_start] => شروع گفتگو
[ins_time] => ما معمولاً در چند دقیقه پاسخ میدهیم
[ins_sound] => https://.../media/sounds/ding-sound-effect_2.mp3
[ins_message] => سلام % به کمک نیاز دارید؟
[clickgen] =>
)
i have two checked box in my form name with 'shch' and 'foch'
I have the following code:
<div><input type="checkbox" name="fhaac_publicly_queryable" value="<?php
if (isset( $_POST ['fhaac_publicly_queryable'])) {
echo "checked";
} elseif ($fhaac_publicly_queryable == "on") {
echo "checked";
}
?>" name="fhaac_publicly_queryable" /> Publicly Queryable on a search</div>
I have the content saving to the database, but on save, the checked check box disappears and I can't figure out how to query so it returns. Any ideas?
Thanks in advance
You're writing the checked attribute as the value of the value attribute. Plus, the name attribute is written twice. Do this instead:
<div>
<input type="checkbox" name="fhaac_publicly_queryable" <?php
if (isset($_POST['fhaac_publicly_queryable'])){
echo 'checked';
} else if($fhaac_publicly_queryable == "on"){
echo "checked";
}?>>
Publicly Queryable on a search
</div>
I still encourage you to please do the PHP logic somewhere else, because this just looks awful. It really does. And to edit your if/else, it could be improved with or (||).
I'm building a contact page with email, name, etc. in HTML with PHP. I have radio buttons on my contact page as well. If the user submitted their name and checked a radio button but forgot to put an email in, the form processing page will flipped them back to the contact page with an error. I'm able to have my contact keep the values put in for their name (and email if user inputs it), but it does not keep the value checked in the radio button.
I'm new to PHP, so I bet it's a silly error on my part. Here's what I have for my Name Input:
Your Name:
<input type="text" name="name" <?php
if (isset($form['name'])) {
echo 'value="';
echo htmlentities($form['name']);
echo '"';
}
?>/>
I tried to do something similar to my Radio. Here's what I have for my Radio:
Are you New to our Business?<br>
<input type="radio" name="customer" value ="yes" <?php
if (isset($form['customer'])) {
echo 'value="';
echo htmlentities($form['customer']);
echo '"';
}
?>/>
Yes, I am!<br>
<input type="radio" name="customer" value="no"<?php
if (isset($form['customer'])) {
echo 'value="';
echo htmlentities($form['customer']);
echo '"';
}
?>/>
No, I am a returning customer!
I'm storing the values on the user input in an array called $form - that's why I have ($form['name]). I would like to it to continue doing that. Some other responses I have researched simply have an isset without the array part.
Hopefully I've provided enough information... Thanks for your help!
You need to do it like this:
if (isset($form['customer']) && $form['customer'] == "yes") {
echo 'checked="checked"';
}
and
if (isset($form['customer']) && $form['customer'] == "no") {
echo 'checked="checked"';
}
You need to change the if-conditional to the following:
<?php
if (isset($form['customer']) && $form['customer'] == "yes") {
echo 'checked';
}
?>/>
Replace the "yes" with "no" for the No part.
I am trying to make a simple PHP open and closed switch with Radio Buttons... Basically you would come to the page and select wether the restaurant is open or closed, then the resulting echoed value would show on the homepage...
I am struggling with this code I was wondering if someone could give me some insights
<?php
if (isset($_POST['button1'])) {
$txt=$_POST['button1'];
file_put_contents('status.txt',$txt,FILE_APPEND|LOCK_EX);
exit();
}
?>
<form method="post" action="<?php echo $PHP_SELF;?>">
Restaurant Open:
<input type="radio" name="button1" value="Open" onClick="submit();" <?php echo ($_POST['button1'] == 'Open') ? 'checked="checked"' : ''; ?> /> Open
<input type="radio" name="button1" value="Closed" onClick="submit();" <?php echo ($_POST['button1'] == 'Closed') ? 'checked="checked"' : ''; ?> /> Closed
</form>
<?php
if (isset($_POST['button1']) == 'Open')
echo "Open Today.";
else if (isset($_POST['button1']) == 'Closed')
echo "Closed Today.";
?>
If you need any additional info let me know...
EDIT: Also I need this value to stay in place until someone else comes and switches it.....
Function isset returns TRUE or FALSE. Change it:
if ( isset($_POST['button1']) && ($_POST['button1'] == 'Open') )
echo "Open Today.";
else if ( isset($_POST['button1']) && ($_POST['button1'] == 'Closed') )
echo "Closed Today.";
But using isset is not necessary.
You need to store the value in a database somewhere so it is remembered. When you pass it in the form it exists only for your own session.
The homepage should retrieve the value from the database and use it to decide what to display.
Here is an introduction to PHP and MySQL. It will seem like overkill for just storing a single value but is very useful knowledge for almost any web application.
How to read if a checkbox is checked in PHP?
If your HTML page looks like this:
<input type="checkbox" name="test" value="value1">
After submitting the form you can check it with:
isset($_POST['test'])
or
if ($_POST['test'] == 'value1') ...
Zend Framework use a nice hack on checkboxes, which you can also do yourself:
Every checkbox generated is associated with a hidden field of the same name, placed just before the checkbox, and with a value of "0". Then if your checkbox as the value "1", you'll always get the '0' or '1' value in the resulting GET or POST
<input type="hidden" name="foo" value="0" />
<input type="checkbox" name="foo" value="1">
When using checkboxes as an array:
<input type="checkbox" name="food[]" value="Orange">
<input type="checkbox" name="food[]" value="Apple">
You should use in_array():
if(in_array('Orange', $_POST['food'])){
echo 'Orange was checked!';
}
Remember to check the array is set first, such as:
if(isset($_POST['food']) && in_array(...
Let your html for your checkbox will be like
<input type="checkbox" name="check1">
Then after submitting your form you need to check like
if (isset($_POST['check1'])) {
// Checkbox is selected
} else {
// Alternate code
}
Assuming that check1 should be your checkbox name.And if your form submitting method is GET then you need to check with $_GET variables like
if (isset($_GET['check1'])) {
// Checkbox is selected
}
$check_value = isset($_POST['my_checkbox_name']) ? 1 : 0;
I've been using this trick for several years and it works perfectly without any problem for checked/unchecked checkbox status while using with PHP and Database.
HTML Code: (for Add Page)
<input name="status" type="checkbox" value="1" checked>
Hint: remove checked if you want to show it as unchecked by default
HTML Code: (for Edit Page)
<input name="status" type="checkbox" value="1"
<?php if ($row['status'] == 1) { echo "checked='checked'"; } ?>>
PHP Code: (use for Add/Edit pages)
$status = $_POST['status'];
if ($status == 1) {
$status = 1;
} else {
$status = 0;
}
Hint: There will always be empty value unless user checked it. So, we already have PHP code to catch it else keep the value to 0. Then, simply use the $status variable for database.
To check if a checkbox is checked use empty()
When the form is submitted, the checkbox will ALWAYS be set, because ALL POST variables will be sent with the form.
Check if checkbox is checked with empty as followed:
//Check if checkbox is checked
if(!empty($_POST['checkbox'])){
#Checkbox selected code
} else {
#Checkbox not selected code
}
You can check the corresponding value as being set and non-empty in either the $_POST or $_GET array depending on your form's action.
i.e.: With a POST form using a name of "test" (i.e.: <input type="checkbox" name="test"> , you'd use:
if(isset($_POST['test']) {
// The checkbox was enabled...
}
You can do it with the short if:
$check_value = isset($_POST['my_checkbox_name']) ? 1 : 0;
or with the new PHP7 Null coalescing operator
$check_value = $_POST['my_checkbox_name'] ?? 0;
Learn about isset which is a built in "function" that can be used in if statements to tell if a variable has been used or set
Example:
if(isset($_POST["testvariabel"]))
{
echo "testvariabel has been set!";
}
Well, the above examples work only when you want to INSERT a value, not useful for UPDATE different values to different columns, so here is my little trick to update:
//EMPTY ALL VALUES TO 0
$queryMU ='UPDATE '.$db->dbprefix().'settings SET menu_news = 0, menu_gallery = 0, menu_events = 0, menu_contact = 0';
$stmtMU = $db->prepare($queryMU);
$stmtMU->execute();
if(!empty($_POST['check_menus'])) {
foreach($_POST['check_menus'] as $checkU) {
try {
//UPDATE only the values checked
$queryMU ='UPDATE '.$db->dbprefix().'settings SET '.$checkU.'= 1';
$stmtMU = $db->prepare($queryMU);
$stmtMU->execute();
} catch(PDOException $e) {
$msg = 'Error: ' . $e->getMessage();}
}
}
<input type="checkbox" value="menu_news" name="check_menus[]" />
<input type="checkbox" value="menu_gallery" name="check_menus[]" />
....
The secret is just update all VALUES first (in this case to 0), and since the will only send the checked values, that means everything you get should be set to 1, so everything you get set it to 1.
Example is PHP but applies for everything.
Have fun :)
$is_checked = isset($_POST['your_checkbox_name']) &&
$_POST['your_checkbox_name'] == 'on';
Short circuit evaluation will take care so that you don't access your_checkbox_name when it was not submitted.
A minimalistic boolean check with switch position retaining
<?php
$checked = ($_POST['foo'] == ' checked');
?>
<input type="checkbox" name="foo" value=" checked"<?=$_POST['foo']?>>
<?php
if (isset($_POST['add'])) {
$nama = $_POST['name'];
$subscribe = isset($_POST['subscribe']) ? $_POST['subscribe'] : "Not Checked";
echo "Name: {$nama} <br />";
echo "Subscribe: {$subscribe}";
echo "<hr />";
}
?>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="POST" >
<input type="text" name="name" /> <br />
<input type="checkbox" name="subscribe" value="news" /> News <br />
<input type="submit" name="add" value="Save" />
</form>
<form>
<input type="check" id=chk1 value="1">
<input type="check" id=chk2 value="1">
<input type="check" id=chk3 value="1">
</form>
when you check on chk2 you can see values as:
<?php
foreach($_POST as $key=>$value)
{
if(isset($key))
$$key=strip_tags($value);
}
insert into table (chk1,chk2,chk3) values ('','1','');
?>
in BS3 you can put
<?php
$checked="hola";
$exenta = $datosOrdenCompra[0]['exenta'];
var_dump($datosOrdenCompra[0]['exenta']);
if(isset($datosOrdenCompra[0]['exenta']) and $datosOrdenCompra[0]['exenta'] == 1){
$checked="on";
}else{
$checked="off";
}
?>
<input type="checkbox" id="exenta" name="exenta" <?php echo $checked;?> > <span class="label-text"> Exenta</span>
Please Note the usage of isset($datosOrdenCompra[0]['exenta'])
Wordpress have the checked() function.
Reference: https://developer.wordpress.org/reference/functions/checked/
checked( mixed $checked, mixed $current = true, bool $echo = true )
Description
Compares the first two arguments and if identical marks as checked
Parameters
$checked
(mixed) (Required) One of the values to compare
$current
(mixed) (Optional) (true) The other value to compare if not just true
Default value: true
$echo
(bool) (Optional) Whether to echo or just return the string
Default value: true
Return #Return
(string) html attribute or empty string
i have fixed it into a PHP form with a checkbox
$categories = get_terms( ['taxonomy' => 'product_cat', 'hide_empty' => false] );
foreach ($categories as $categorie) {
echo "<input type="checkbox" value="$categorie->term_taxonomy_id" name="catselected[]"> $categorie->slug";
}
This way i add it to the Woocommerce tabel.
wp_set_post_terms( $product_id, $_POST['catselected'], 'product_cat' );
filter_input(INPUT_POST, 'checkbox_name', FILTER_DEFAULT, FILTER_FORCE_ARRAY)
<?php
if(isset($_POST['nameCheckbox'])){
$_SESSION['fr_nameCheckbox'] = true;
}
?>
<input type="checkbox" name="nameCheckbox"
<?php
if(isset($_SESSION['fr_nameCheckbox'])){
echo 'checked';
unset($_SESSION['fr_nameCheckbox']);
}
?>
you should give name to your input .
then which box is clicked you will receive 'on' in your choose method
Array
(
[shch] => on
[foch] => on
[ins_id] => #
[ins_start] => شروع گفتگو
[ins_time] => ما معمولاً در چند دقیقه پاسخ میدهیم
[ins_sound] => https://.../media/sounds/ding-sound-effect_2.mp3
[ins_message] => سلام % به کمک نیاز دارید؟
[clickgen] =>
)
i have two checked box in my form name with 'shch' and 'foch'