PHP to Javascript

[simeonC]

I have inserted some JSON data into mysql database. And would like to retrieve it to display it. However it must first pass through a script..

My question is how do I convert a php variable to a javascript variable..

 

The contents of the php variable is

$signature= [{"lx":123,"ly":37,"mx":123,"my":36},{"lx":120,"ly":33,"mx":123,"my":37},{"lx":119,"ly":33,"mx":120,"my":33},{"lx":113,"ly":33,"mx":119,"my":33},{"lx":102,"ly":33,"mx":113,"my":33},{"lx":92,"ly":33,"mx":102,"my":33},{"lx":81,"ly":32,"mx":92,"my":33},{"lx":71,"ly":31,"mx":81,"my":32},{"lx":67,"ly":30,"mx":71,"my":31},{"lx":63,"ly":29,"mx":67,"my":30},{"lx":62,"ly":27,"mx":63,"my":29},{"lx":62,"ly":25,"mx":62,"my":27},{"lx":65,"ly":20,"mx":62,"my":25},{"lx":78,"ly":13,"mx":65,"my":20},{"lx":98,"ly":4,"mx":78,"my":13},{"lx":114,"ly":0,"mx":98,"my":4},{"lx":167,"ly":4,"mx":114,"my":0},{"lx":172,"ly":9,"mx":167,"my":4},{"lx":175,"ly":15,"mx":172,"my":9},{"lx":177,"ly":23,"mx":175,"my":15},{"lx":179,"ly":34,"mx":177,"my":23},{"lx":179,"ly":40,"mx":179,"my":34},{"lx":179,"ly":46,"mx":179,"my":40},{"lx":179,"ly":49,"mx":179,"my":46},{"lx":177,"ly":54,"mx":179,"my":49},{"lx":176,"ly":54,"mx":177,"my":54},{"lx":175,"ly":55,"mx":176,"my":54},{"lx":173,"ly":55,"mx":175,"my":55},{"lx":171,"ly":55,"mx":173,"my":55},{"lx":169,"ly":55,"mx":171,"my":55},{"lx":169,"ly":53,"mx":169,"my":55},{"lx":169,"ly":52,"mx":169,"my":53},{"lx":170,"ly":51,"mx":169,"my":52},{"lx":172,"ly":50,"mx":170,"my":51},{"lx":173,"ly":49,"mx":172,"my":50},{"lx":175,"ly":48,"mx":173,"my":49},{"lx":176,"ly":47,"mx":175,"my":48},{"lx":178,"ly":46,"mx":176,"my":47},{"lx":175,"ly":45,"mx":178,"my":46},{"lx":167,"ly":45,"mx":175,"my":45},{"lx":158,"ly":45,"mx":167,"my":45},{"lx":147,"ly":45,"mx":158,"my":45},{"lx":136,"ly":45,"mx":147,"my":45},{"lx":125,"ly":45,"mx":136,"my":45},{"lx":118,"ly":45,"mx":125,"my":45},{"lx":111,"ly":45,"mx":118,"my":45},{"lx":107,"ly":45,"mx":111,"my":45},{"lx":104,"ly":45,"mx":107,"my":45},{"lx":103,"ly":45,"mx":104,"my":45},{"lx":108,"ly":43,"mx":103,"my":45},{"lx":123,"ly":40,"mx":108,"my":43},{"lx":139,"ly":38,"mx":123,"my":40},{"lx":156,"ly":37,"mx":139,"my":38},{"lx":168,"ly":35,"mx":156,"my":37},{"lx":176,"ly":35,"mx":168,"my":35},{"lx":180,"ly":35,"mx":176,"my":35},{"lx":181,"ly":35,"mx":180,"my":35},{"lx":44,"ly":17,"mx":44,"my":16},{"lx":46,"ly":16,"mx":44,"my":17},{"lx":47,"ly":16,"mx":46,"my":16},{"lx":56,"ly":16,"mx":47,"my":16},{"lx":65,"ly":16,"mx":56,"my":16},{"lx":78,"ly":16,"mx":65,"my":16},{"lx":91,"ly":17,"mx":78,"my":16},{"lx":101,"ly":18,"mx":91,"my":17},{"lx":109,"ly":19,"mx":101,"my":18},{"lx":117,"ly":21,"mx":109,"my":19},{"lx":121,"ly":21,"mx":117,"my":21},{"lx":126,"ly":21,"mx":121,"my":21},{"lx":128,"ly":21,"mx":126,"my":21},{"lx":129,"ly":19,"mx":128,"my":21},{"lx":130,"ly":19,"mx":129,"my":19},{"lx":131,"ly":18,"mx":130,"my":19},{"lx":139,"ly":18,"mx":131,"my":18},{"lx":151,"ly":19,"mx":139,"my":18},{"lx":165,"ly":23,"mx":151,"my":19},{"lx":178,"ly":26,"mx":165,"my":23},{"lx":188,"ly":28,"mx":178,"my":26},{"lx":197,"ly":29,"mx":188,"my":28},{"lx":205,"ly":29,"mx":197,"my":29},{"lx":210,"ly":29,"mx":205,"my":29},{"lx":214,"ly":29,"mx":210,"my":29},{"lx":217,"ly":26,"mx":214,"my":29},{"lx":219,"ly":24,"mx":217,"my":26},{"lx":219,"ly":22,"mx":219,"my":24},{"lx":219,"ly":18,"mx":219,"my":22},{"lx":219,"ly":15,"mx":219,"my":18},{"lx":219,"ly":13,"mx":219,"my":15},{"lx":219,"ly":11,"mx":219,"my":13},{"lx":218,"ly":12,"mx":219,"my":11},{"lx":218,"ly":14,"mx":218,"my":12},{"lx":218,"ly":17,"mx":218,"my":14},{"lx":218,"ly":21,"mx":218,"my":17},{"lx":218,"ly":26,"mx":218,"my":21},{"lx":218,"ly":30,"mx":218,"my":26},{"lx":217,"ly":33,"mx":218,"my":30},{"lx":216,"ly":36,"mx":217,"my":33},{"lx":216,"ly":37,"mx":216,"my":36},{"lx":215,"ly":37,"mx":216,"my":37},{"lx":215,"ly":36,"mx":215,"my":37},{"lx":213,"ly":33,"mx":215,"my":36},{"lx":212,"ly":30,"mx":213,"my":33},{"lx":208,"ly":28,"mx":212,"my":30},{"lx":200,"ly":27,"mx":208,"my":28},{"lx":192,"ly":27,"mx":200,"my":27},{"lx":184,"ly":27,"mx":192,"my":27},{"lx":174,"ly":29,"mx":184,"my":27},{"lx":164,"ly":32,"mx":174,"my":29},{"lx":152,"ly":35,"mx":164,"my":32},{"lx":142,"ly":38,"mx":152,"my":35},{"lx":134,"ly":41,"mx":142,"my":38},{"lx":129,"ly":42,"mx":134,"my":41},{"lx":124,"ly":43,"mx":129,"my":42},{"lx":120,"ly":44,"mx":124,"my":43},{"lx":118,"ly":44,"mx":120,"my":44},{"lx":116,"ly":44,"mx":118,"my":44},{"lx":116,"ly":45,"mx":116,"my":44},{"lx":116,"ly":50,"mx":116,"my":45},{"lx":116,"ly":56,"mx":116,"my":50},{"lx":116,"ly":60,"mx":116,"my":56},{"lx":114,"ly":63,"mx":116,"my":60},{"lx":111,"ly":65,"mx":114,"my":63},{"lx":106,"ly":66,"mx":111,"my":65},{"lx":103,"ly":66,"mx":106,"my":66},{"lx":98,"ly":66,"mx":103,"my":66},{"lx":95,"ly":66,"mx":98,"my":66},{"lx":91,"ly":64,"mx":95,"my":66},{"lx":86,"ly":62,"mx":91,"my":64},{"lx":83,"ly":60,"mx":86,"my":62},{"lx":80,"ly":58,"mx":83,"my":60},{"lx":78,"ly":56,"mx":80,"my":58},{"lx":76,"ly":55,"mx":78,"my":56},{"lx":75,"ly":53,"mx":76,"my":55},{"lx":75,"ly":51,"mx":75,"my":53},{"lx":75,"ly":50,"mx":75,"my":51},{"lx":75,"ly":49,"mx":75,"my":50},{"lx":75,"ly":47,"mx":75,"my":49},{"lx":77,"ly":47,"mx":75,"my":47},{"lx":79,"ly":47,"mx":77,"my":47},{"lx":81,"ly":47,"mx":79,"my":47},{"lx":82,"ly":47,"mx":81,"my":47},{"lx":84,"ly":47,"mx":82,"my":47},{"lx":84,"ly":48,"mx":84,"my":47},{"lx":85,"ly":48,"mx":84,"my":48},{"lx":86,"ly":49,"mx":85,"my":48}]

This is how the data will comeout of the database now how do I get it back into javascript

[trq]

echo it.

 

 

var = '<?php echo $signature; ?>';

[Irate]

Did you try using <?php echo json_encode($signature) ?>?

[jcbones]

No need to encode it, it is already JSON.

[web_craftsman]

<script type="text/javascript">

  

var signature = JSON.parse('<?php print $signature; ?>');


</script>

[.josh]

The way I understand that OP, $signature is actually the js var (it's part of the js he wants to output). So basically just echo out the php variable you store that whole thing in (make sure it's within script tags of course).

 

Example (truncated for brevity):

 

<?php

$variableFromDatabase = '$signature= [{"lx":123,"ly":37,"mx":123,"my":36}]';
echo "<script type='text/javascript'>$variableFromDatabase</script>";

?>

[simeonC]

Thank you all.. All answers are correct.