Javascript – Double dimensional array value from PHP

arraysjavascriptmultidimensional-arrayphp

I have a PHP file that is going to write a two-dimensional array in JavaScript:

<?php
    print "<script language='javascript'>";
    print " extra[0][0] = new Array(1,'Bob',12);";
    print " extra[0][1] = new Array(2,'Alice',18);";
      ..
    // Need to assign the extra[1][0], extra[1][1] and so on.
    print "</script>";
 ?>

Mu.js:

  var extra =  new Array();
  ...

How do I assign the two-dimensional array from PHP to a JavaScript variable?

Best Solution

json_encode is your friend: json_encode in the PHP manual


<script type="text/javascript">
  var jsArray = <?= json_encode($my_array) ?>;
</script>

Related Solutions

Javascript – How to check if an array includes a value in JavaScript

Modern browsers have Array#includes, which does exactly that and is widely supported by everyone except IE:

console.log(['joe', 'jane', 'mary'].includes('jane')); //true

You can also use Array#indexOf, which is less direct, but doesn't require polyfills for outdated browsers.

console.log(['joe', 'jane', 'mary'].indexOf('jane') >= 0); //true

Many frameworks also offer similar methods:

jQuery: $.inArray(value, array, [fromIndex])
Underscore.js: _.contains(array, value) (also aliased as _.include and _.includes)
Dojo Toolkit: dojo.indexOf(array, value, [fromIndex, findLast])
Prototype: array.indexOf(value)
MooTools: array.indexOf(value)
MochiKit: findValue(array, value)
MS Ajax: array.indexOf(value)
Ext: Ext.Array.contains(array, value)
Lodash: _.includes(array, value, [from]) (is _.contains prior 4.0.0)
Ramda: R.includes(value, array)

Notice that some frameworks implement this as a function, while others add the function to the array prototype.

Javascript – How to create a two dimensional array in JavaScript

var items = [
  [1, 2],
  [3, 4],
  [5, 6]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 3
console.log(items[1][1]); // 4
console.log(items);

Mu.js:

Best Solution

Related Solutions

Javascript – How to check if an array includes a value in JavaScript

Javascript – How to create a two dimensional array in JavaScript

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