to read variable from php for JS

zodehala · 03-11-2010, 05:18 PM

this is my x.js file

Code:

function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');    

   if (fld.value == "") {
        error = "You didn't enter a phone number.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "i wanna read a variable from php )e.g : $a .\n";
        fld.style.background = 'Yellow';
    }
    return error;
}

x.php is my php page like following

PHP Code:


			
<?php

$a = aaaaaaaaaaaaa;

$b = bbbbbbbbbbbbbbbb;

Fou-Lu · 03-11-2010, 05:31 PM

Nope, PHP and Javascript are not compatable together; one is a server side language while the other is client side. Using Javascript you can create an AJAX request to a PHP page for its new variable information.

Aside from that, if the data is not dynamic you can generate the javascript itself using php and include it in as if it were javascript:
CustomJS.php

PHP Code:


			
<?php 



header("Content-type: text/javascript");



$a = aaaaaaaaaaaaa; 

$b = bbbbbbbbbbbbbbbb; 

?>



function validatePhone(fld) {

    var error = "";

    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');    



   if (fld.value == "") {

        error = "You didn't enter a phone number.\n";

        fld.style.background = 'Yellow';

    } else if (isNaN(parseInt(stripped))) {

        error = "The phone number contains illegal characters.\n";

        fld.style.background = 'Yellow';

    } else if (!(stripped.length == 10)) {

        error = <?php echo $a . PHP_EOL;?>

        fld.style.background = 'Yellow';

    }

    return error;

}

Code:

<head>
  <script type="text/javascript" src="path/to/CustomJS.php"></script>

zodehala · 03-12-2010, 09:18 AM

i tried to do it like you said but it did not run correctly

could you do it please instead of me . (it is in attachment)

Goldfish · 03-12-2010, 09:43 AM

$a = aaaaa; cannot work, has to be either

$a = 12345;
or
$a = "aaaaa";

I wouldn´t echo '' the entire page, better use print <<<END

Code:

<?php
$a = 12345;
header("Content-type: text/javascript");

print <<<END
function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');    

   if (fld.value == "") {
        error = "You didn't enter a phone number.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "$a .\n";
        fld.style.background = 'Yellow';
    }
    return error;
}
END;
?>

Make sure the line containing END; has no spaces or anything else in that line.