Get Javascript variable as an index with PHP array in Javascript

Question

Want javascript variable as index variable in php array in javascript.

Code is not working .....

<script>
 var total = <?php echo count($resvalue); ?> ; //$resvalue is an array holding the values are 1,2,3,4. total will hold count of that array.
 for(var j=0;j<total;j++)
 {
 <php echo $resvalue[j]; ?> // where j is javascript variable and $resvalue is PHP array
 }
 </script>

• Robby Cornelissen: JavaScript is executed on the client side, PHP on the server side. You can't mix and match.
• Natavar Ghodasara: then what will be the solution for this ?
• samAlvin: You can solve your problem by either sending the $resvalue to the client using API call, or by using full php code
• Robby Cornelissen: Don't know your use case. For the simple code you're showing, you can easily just do everything in PHP.
• oldboy: can you clarify your question. also, you have an error in your code... <php echo... should be <?php echo... you also have another error in your for loop. it should be total.length and not total...

Answer 1

You cannot read values in a php array from javascript. Instead echo the array and turn it into a javascript array and let javascript do the count.

<script>
 var resvalue = [<?php echo $resvalue; ?>]; // or something like this
 for(var j=0; j < resvalue.length; j++)
 {
 // your value is available in the js-array
 // resvalue[j]
 }
</script>