PHP array() to javascript array() [duplicate]

Question

I'm trying to convert a PHP array to a javascript array for jQuery's datetimepicker to disable some dates. But I can't seem to find the right answer on the internet. I'm using Zend Framework for my project.

<?php              $ConvertDateBack = Zend_Controller_Action_HelperBroker::getStaticHelper('ConvertDate');             $disabledDaysRange = array();             foreach($this->reservedDates as $dates) {                  $date = $ConvertDateBack->ConvertDateBack($dates->reservation_date);                  $disabledDaysRange[] = $date;             } ?> <script> var disabledDaysRange = $disabledDaysRange ???? Please Help; $(function() {     function disableRangeOfDays(d) {         for(var i = 0; i < disabledDaysRange.length; i++) {             if($.isArray(disabledDaysRange[i])) {                 for(var j = 0; j < disabledDaysRange[i].length; j++) {                     var r = disabledDaysRange[i][j].split(" to ");                     r[0] = r[0].split("-");                     r[1] = r[1].split("-");                     if(new Date(r[0][2], (r[0][0]-1), r[0][1]) <= d && d <= new Date(r[1][2], (r[1][0]-1), r[1][1])) {                         return [false];                     }                 }             }else{                 if(((d.getMonth()+1) + '-' + d.getDate() + '-' + d.getFullYear()) == disabledDaysRange[i]) {                     return [false];                 }             }         }         return [true];     }     $('#date').datepicker({         dateFormat: 'dd/mm/yy',         beforeShowDay: disableRangeOfDays         }); }); </script> 

Answer 1

To convert you PHP array to JS , you can do it like this :

var js_array = [<?php echo '"'.implode('","',  $disabledDaysRange ).'"' ?>]; 

or using JSON_ENCODE :

var js_array =<?php echo json_encode($disabledDaysRange );?>; 

Example without JSON_ENCODE:

<script type='text/javascript'>     <?php     $php_array = array('abc','def','ghi');     ?>     var js_array = [<?php echo '"'.implode('","', $php_array).'"' ?>];     alert(js_array[0]); </script> 

Example with JSON_ENCODE :

<script type='text/javascript'>     <?php     $php_array = array('abc','def','ghi');     ?>     var js_array =<?php echo json_encode($disabledDaysRange );?>;     alert(js_array[0]); </script> 

Answer 2

The PHP json_encode function translates the data passed to it to a JSON string which can then be output to a JavaScript variable.The PHP json_encode function returns a string containing the JSON equivalent of the value passed to it.

<?php $ar = array('apple', 'orange', 'banana', 'strawberry'); echo json_encode($ar); // ["apple","orange","banana","strawberry"] ?> 

You can pass the JSON string output by json_encode to a JavaScript variable as follows:

<script type="text/javascript"> // pass PHP variable declared above to JavaScript variable var ar = <?php echo json_encode($ar) ?>; </script> 

A numerically indexed PHP array is translated to an array literal in the JSON string. A JSON_FORCE_OBJECT option can be used if you want the array to be output as an object instead:

<?php echo json_encode($ar, JSON_FORCE_OBJECT); // {"0":"apple","1":"orange","2":"banana","3":"strawberry"}  ?> 

Associative Array Example:

<?php $book = array(     "title" => "JavaScript: The Definitive Guide",     "author" => "David Flanagan",     "edition" => 6 ); ?> <script type="text/javascript"> var book = <?php echo json_encode($book, JSON_PRETTY_PRINT) ?>; /* var book = {     "title": "JavaScript: The Definitive Guide",     "author": "David Flanagan",     "edition": 6 }; */ alert(book.title); </script> 

Notice that PHP's associative array becomes an object literal in JavaScript. We use the JSON_PRETTY_PRINT option as the second argument to json_encode to display the output in a readable format.

You can access object properties using dot syntax, as displayed with the alert included above, or square bracket syntax: book['title'].

here you can find more information and details.