Get JSON format from MySql to javascript using PHP -

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i want json format sql database using php

here capture of mysql database

capture mysql database

data.php

<?php  include("include/connexion.php"); $requete = "select * statistika"; $resultat = mysql_query( $requete ) or die( mysql_error() ); $rows = array();  $total_vue = 0;

here php code data 

while( $data = mysql_fetch_assoc( $resultat ) ) {   $total_vue+=$data['temps'];    $rows[] = array(     "date" =>  strtotime( $data['date']) * 1000,     "value" => $data[ 'temps' ]   ); } ?>

json_encode.php

<?php  include("data.php");  echo  json_encode($rows); ?>

the content of json_encode valid , json format successfully

[{"date":1439769600000,"value":"5"},{"date":1439787600000,"value":"12"},{"date":1439806631000,"value":"8"},{"date":1439821320000,"value":"18"},{"date":1439919642000,"value":"6"},{"date":1439889752000,"value":"2"},{"date":1439893260000,"value":"20"},{"date":1439906400000,"value":"9"},{"date":1429308000000,"value":"15"},{"date":1421535600000,"value":"12"},{"date":1413583200000,"value":"18"},{"date":1405634400000,"value":"6"},{"date":1439828640000,"value":"14"},{"date":1439935200000,"value":"19"},{"date":1439863200000,"value":"12"},{"date":1439884800000,"value":"18"},{"date":1439917200000,"value":"26"},{"date":1439920800000,"value":"4"},{"date":1439904320000,"value":"0"},{"date":1439907420000,"value":"1"},{"date":1439907428000,"value":"1"},{"date":1439907434000,"value":"3"},{"date":1439907437000,"value":"1"},{"date":1439907447000,"value":"8"},{"date":1439907452000,"value":"3"},{"date":1439907459000,"value":"5"},{"date":1439907469000,"value":"8"},{"date":1439907482000,"value":"10"},{"date":1439907507000,"value":"21"},{"date":1439907510000,"value":"1"},{"date":1439907519000,"value":"7"},{"date":1439907526000,"value":"5"},{"date":1439907547000,"value":"18"},{"date":1439907557000,"value":"8"},{"date":1439907560000,"value":"1"},{"date":1439907576000,"value":"3"},{"date":1439907581000,"value":"3"},{"date":1418857200000,"value":"300"},{"date":1426633200000,"value":"450"},{"date":1434578400000,"value":"500"},{"date":1424214000000,"value":"600"}]

now want pass json format javascript , using code

var foo = {}; foo.tostring = function () { return <?php echo json_encode($rows);?> }; document.write(foo.tostring);

the problem when printing foo.tostring this

function () { return [{"date":1439769600000,"value":"5"},{"date":1439787600000,"value":"12"},{"date":1439806631000,"value":"8"},{"date":1439821320000,"value":"18"},{"date":1439919642000,"value":"6"},{"date":1439889752000,"value":"2"},{"date":1439893260000,"value":"20"},{"date":1439906400000,"value":"9"},{"date":1429308000000,"value":"15"},{"date":1421535600000,"value":"12"},{"date":1413583200000,"value":"18"},{"date":1405634400000,"value":"6"},{"date":1439828640000,"value":"14"},{"date":1439935200000,"value":"19"},{"date":1439863200000,"value":"12"},{"date":1439884800000,"value":"18"},{"date":1439917200000,"value":"26"},{"date":1439920800000,"value":"4"},{"date":1439904320000,"value":"0"},{"date":1439907420000,"value":"1"},{"date":1439907428000,"value":"1"},{"date":1439907434000,"value":"3"},{"date":1439907437000,"value":"1"},{"date":1439907447000,"value":"8"},{"date":1439907452000,"value":"3"},{"date":1439907459000,"value":"5"},{"date":1439907469000,"value":"8"},{"date":1439907482000,"value":"10"},{"date":1439907507000,"value":"21"},{"date":1439907510000,"value":"1"},{"date":1439907519000,"value":"7"},{"date":1439907526000,"value":"5"},{"date":1439907547000,"value":"18"},{"date":1439907557000,"value":"8"},{"date":1439907560000,"value":"1"},{"date":1439907576000,"value":"3"},{"date":1439907581000,"value":"3"},{"date":1418857200000,"value":"300"},{"date":1426633200000,"value":"450"},{"date":1434578400000,"value":"500"},{"date":1424214000000,"value":"600"}]

i don't want function () { return appear in output !!!

any hints ?

thanks .

change line in js code

from 

foo.tostring = function () { return <?php echo json_encode($rows);?> };

to

foo.tostring = '<?php echo json_encode($rows);?>';

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