I am now about to give up for ajax in javascript to pass JSON array to PHP. I have first PHP file in which I have form which contains a text area and checkboxes. The snippet is below:
<form name="drugForm" onsubmit="return validateForm()" method="post">
Drug name: <input type="text" name="dname"></pre>
<pre>
<input type="checkbox" name="drug" value="one">1 <input type="checkbox" name="drug" value="two">2</br>
<input type="checkbox" name="drug" value="three">3 <input type="checkbox" name="drug" value="four">4</br></br>
<input type="submit" value="Submit">
</pre>
Here, with validateForm() call I am calling javascript to check whether text area is filled and at least a checkbox is checked. Also, it is creating array, in javascript, to get checked values. Here with this js I want to send this array to PHP file by converting it JSON using ajax. COde snippet is below:
function validateForm()
{
var x=document.forms["drugForm"]["dname"].value;
var y=document.drugForm.drug;
var y_array = new Array();
if (x==null || x=="")
{
alert("First name must be filled out");
return false;
}
else if (Boolean(x))
{
for(k=0;k<y.length;k++)
{
if(y[k].checked)
{
var arr_val = y[k].value;
y_array.push(arr_val);
//alert(arr_val);
}
}
$.ajax({
type: "POST",
url: "drug_form3.php",
dataType: 'json',
data: {json: JSON.stringify(y_array)},
});
alert("Check one checkbox at least");
return false;
}
}
Here, with js array is getting created and whenever I am printing values with alert, it is giving proper result. But, when I am trying to send it to next PHP file even after using json_decode in php file, it is not able to get array printed with PHP. Below is code snippet for second PHP:
<body>
<?php
$json = $_POST['json'];
$array=json_decode($_POST[$json]);
// here i would like use foreach:
print_r ($array);
echo "Its in form2 and working fine";
?>
</body>
Please guide me in this issue, how to pass json array to PHP file using javascript.
