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php echo link including php variable

php echo link including php variable

(OP)
How can php write a link to call a javascript function which uses a php variable ?
In this simple example I want the alert box to show the value (222) of the variable, but I cannot get beyond result1 showing the alert with "$myvar", or
result2 showing the alert with the variable but without a link.

<?php
$myvar = "222";

$link = 'alert("$myvar")';
$result1 = "";
$result1 .= "<a href='javascript:";
$result1 .= $link;
$result1 .= " '>";
$result1 .= $link;
$result1 .= "</a>";

$result2 = "";
$result2 .= "<script type='text/javascript'>";
$result2 .= "alert('$myvar');";
$result2 .= "</script>";
?>

<html>
<head>
</head>
<body>

<?php
echo $result1;
echo $result2;
?>

</body>
</html>

RE: php echo link including php variable

Hi

Let us cut the complications for now :

CODE --> PHP

<?php
$myvar = "s'p\"e<c&i;a>l";
?>
<html>
<head>
</head>
<body>
<a href="javascript:alert(<?=htmlentities(json_encode($myvar))?>)">Huh ?</a>
</body>
</html> 
Note that you can alert() a number without much care, but if that value could ever contain something else than digits, better encode it properly.

Feherke.
feherke.github.io

RE: php echo link including php variable

(OP)
Thanks feherke. I guessed it would be you who came to my rescue.

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