How can i get select option by id using php

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I want to access option of dropdowns by id using php like i have done in javascript .I want to do this work in php also.Is there any way to do this.Please guide.My JS code is.

var opt = amove.options[amove.selectedIndex];

   if(opt.id =="Exchange"){          
      document.getElementById('barcode2lb').style.display='block';

      document.getElementById('barcode2txt').style.display='block';
}
else{

     document.getElementById('barcode2lb').style.display='none';

     document.getElementById('barcode2txt').style.display='none';
}  

if you using raw php then

<select name="">
  <option value=""> select a option </option>
<?php
  $sql = 'SELECT * FROM table ORDER BY id ASC';
  $result_select = mysql_query($sql);
  $rows = array();
  while($row = mysql_fetch_array($result_select)){
    if($row['which column you want to compare'] == value){
      echo "<option value="".$row['value index']."">".$row['value index']." </option>"
   }
  }
?>

How to set the selected option of <select> tag from the PHP , The easiest way to do this is in fact really simple, you just need to add a <form> <select id="company" name="company"> <option <?php if  HTML select tag allows user to choose one or more options from the given drop down list. Below example contains PHP script to get a single or multiple selected values from given HTML select tag. We are covering following operations on select option field using PHP script. To get value of a selected option from select tag:

For example,

<select>
<?php foreach($yourArr as $row):
if(yourConidtion){
  $selected='selected';
}else{
  $selected='';
}?>
<option value="<?= $row->id?>" <?= $selected ?>><?= $row->name ?></option>
<?php endforeach;?>
</select>

I think this is what you asked for

[Solved] How to get id of selected item in database populated , There is no straight way to get datalist option text in javascript. You can add one more attribute id and put that text value there and get the result  There is a few ways to do this. The easiest way to do this is in fact really simple, you just need to add a keyword “selected” to the option that you want selected. Now next thing that we need to do is to make our <select> submit so we could arrange the page accordingly.

PHP is a server side language therefore you will need your JS to post your id values using AJAX. Make an AJAX call from your JS code and handle the data in your PHP code

How to get the selected index value of a <select> tag in PHP, You need to use Javascript to send that information. HTML snippet. <select id="​todos">  It depends on what criteria you want to use to determine which select option, if any, you want to be as the "selected". I do not know this, it could be the first, the last, one that has a specific

Get Value or Selected Option in Select Box Using JavaScript, How to get the value of selected option in select box or reference to it. id="​demoForm" class="demoForm"> <fieldset> <legend>Demo: Get Value or Text of Image PHP</option> <option value="form_builder">PHP Form Generator</​option>  Finally, we don't really need a "blank" option in this select box, because we can simply check to make sure the user selected something or not. To select multiple values, use the shift or ctrl buttons when clicking. The PHP code to process this field is very similar to the checkbox code. $_POST['formCountries'] returns an array of the selected

How to set the selected option (from database) of <select> tag in PHP, I have a drop-down in html which is being rendered from php How to set the selected option (from database) of <select> tag in PHP I do not know this, it could be the first, the last, one that has a specific id or name etc. The text property of an option is the content of the option element. Using a for Loop to Obtain Selected Option. You can use a for loop to iterate through the options of a select list to determine which is selected. A function can be defined to return a reference to the selected option or its value.

HTML DOM Select options Collection, Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java  This question is about retrieving the user’s selection from the menu using PHP. The first thing to be understood is that the language in which the dropdown was originally coded is quite irrelevant.

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