2019-04-19 06:43
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I have a little problem in my code, please review it and help me. I want to assign value of the span tag(fetched by id in html) to a php variable and then run a sql query to fetch record of the related value in the table. Here is my code.

I tried it in different ways but it not works. I print the sql query and its absolutely right but does not show the correct result. I copied that printed sql query and paste it into phpmyadmin query section and run it there. Then it works fine and show related records. Please help

$regg = '<span id="modal-myvalue"></span>';
$fee_detail = "SELECT * FROM `fee_enroll` WHERE registeration = '$regg' AND mode = 'ENABLE'";
//here i print the query and its output is correct but doesn't show the correct record here.      
echo $fee_detail;
 $result_fee = mysqli_query($con, $fee_detail);
 while($row_fee = mysqli_fetch_assoc($result_fee)) {
 echo $row_fee['registeration'];

The data which i want to fetch in span tag(in id) is sent from a button through this script:

<script type="text/javascript">    
    var ATTRIBUTES = ['myvalue'];
    $('[data-toggle="modal"]').on('click', function(e) {
        var $target = $(;
        var modalSelector = $'target');

        ATTRIBUTES.forEach(function(attributeName) {
            var $modalAttribute = $(modalSelector + ' #modal-' + attributeName);
            var dataValue = $;

            $modalAttribute.text(dataValue || '');

and the button code is

<a class="btn" type=submit data-toggle="modal" data-target="#model-view" data-myvalue="<?php echo $row['registeration']; ?>">VIEW Detail</a>

When i print the query it shows:

(SELECT * FROM `fee_enroll` WHERE registeration = 'FA12-BSE-094' AND mode = 'ENABLE')

which works correctly in phpmyadmin query section. but not works here when i want to execute.

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2条回答 默认 最新

  • dqdl6469 2019-04-19 07:10

    You can try DOMDocument as follows,

    $regg = '<span id="modal-myvalue">FA12-BSE-094</span>';
    $doc = new DOMDocument();
    $elements = $doc->getElementsByTagName('span')->item(0);

    And then you can use this variable in query like below,

    $fee_detail = "SELECT * FROM `fee_enroll` WHERE registeration = '$elements->nodeValue' AND mode = 'ENABLE'";
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  • douhuan6305 2019-04-19 07:16

    You cannot insert a variable like that. See this answer.

    Complex (curly) syntax

    Any scalar variable, array element or object property with a string representation can be included via this syntax. Simply write the expression the same way as it would appear outside the string, and then wrap it in { and }. Since { can not be escaped, this syntax will only be recognised when the $ immediately follows the {. Use {\$ to get a literal {$.

    Curly braces in string in PHP

    My suggestion should be to change the query string into the following:

    $fee_detail = "SELECT * FROMfee_enrollWHERE registeration = '{$regg}' AND mode = 'ENABLE'";

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