PHP values into javascript

Question

                <script type="text/javascript">
                    var places = [];
                </script>
                <?php
                $date = $_POST['orderdate'];
                $file = fopen("http://www.spc.noaa.gov/climo/reports/".$date."_rpts_hail.csv", "r");
                $content = fgetcsv($file, 1000, ",");
                $id = 1;
                while (($content = fgetcsv($file, 1000, ",")) !== FALSE) {
/*******************************************************************************************
                    Values of content
                    (ignore)****content[0] = Time*******(ignore)
                                content[1] = Size
                    (ignore)****content[2] = Location***(ignore)
                                content[3] = City
                                content[4] = State
                                content[5] = Lat 
                                content[6] = Long
                                content[7] = Comments
*******************************************************************************************/
                    if ($content !== false) {
                    ?>
                        <script type="text/javascript">                             
                        places.push(new google.maps.LatLng(<?php echo json_encode($content[5]); ?>, <?php echo json_encode($content[6]); ?>));
                        </script>
                    <?php           
                    }

Is there any way that when a page loads, some php code will run and get an array of information and then have that information be put into a javascript variable to use?

Pekka · Accepted Answer · 2011-02-14 19:57:24Z

8

Yes.

Use for example json_encode():

<?php 
   $array = array("first" => 1, "second" => 2, "third" => 3, "fourth" => 4);
 ?>

 <script>
   var my_array = <?php echo json_encode($array); ?>
   alert(my_array[1]); // alerts "first"
 </script>

edited Feb 14, 2011 at 19:57

answered Feb 14, 2011 at 19:50

Pekka

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7 Comments

Surreal Dreams Over a year ago

I just linked the function to it's reference page. I decided to look it up, so I made it convenient for other viewers to look up. Want me to roll it back? Your call.

shinjuo Over a year ago

I updated my code. I really need to know how to push the php data into javascript

Pekka Over a year ago

@Surreal ah, we did the same thing at the same time then (I edited it heavily during the 5-minute window). Then everything's fine

Pekka Over a year ago

@shin I don't understand - aren't you already doing the very thing?

shinjuo Over a year ago

@pekka Sorry I just fixed the problem. I did use your function but I was trying to put two values together. I put the new code that works up above. Thanks for the help

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