PHP get data from jquery - php

Question

Im trying to write a simple prgram that the server can get data from client.
I write a simple code in my script
var str = "testString";
$.post("http://anonymous.comze.com/test1.php", { string: str });
in the server,
$var = $_POST['string']; // this fetches your post action
$sql2 = "INSERT INTO afb_comments VALUES ('3',$var)";
$result2= mysql_query($sql2,$conn);
The question is var is always null. The sql2 can be executed if I change $var into "1111" for example,
but if I put $var, it doesn't work. Can anyone give some advice?

Answer 1

your are passing string to the query so it should be
$var = $_POST['string']; // this fetches your post action
$sql2 = "INSERT INTO afb_comments VALUES ('3','".$var."')";
$result2= mysql_query($sql2,$conn);
please also check datatype of the that column.

Answer 2

Use this example and learn from this code how to get data
Or
use can also use this link:
http://api.jquery.com/jQuery.get/
$user and $pass should be set to your MySql User's username and password.
I'd use something like this:
JS
success: function(data){
if(data.status === 1){
sr = data.rows;
}else{
// db query failed, use data.message to get error message
}
}
PHP:
<?php
$host = "localhost";
$user = "username";
$pass = "password";
$databaseName = "movedb";
$tableName = "part parameters";
$con = mysql_pconnect($host, $user, $pass);
$dbs = mysql_select_db($databaseName, $con);
//get the parameter from URL
$pid = $_GET["pid"];
if(empty($pid)){
echo json_encode(array('status' => 0, 'message' => 'PID invalid.'));
} else{
if (!$dbs){
echo json_encode(array('status' => 0, 'message' => 'Couldn\'t connect to the db'));
}
else{
//connection successful
$sql = "SELECT `Processing Rate (ppm)` FROM `part parameters` WHERE `Part Number` LIKE `" . mysqli_real_escape_string($pid) . "`"; //sql string command
$result = mysql_query($sql) or die(mysql_error());//execute SQL string command
if(mysql_num_rows($result) > 0){
$rows = mysql_fetch_row($result);
echo json_encode(array('status' => 1, 'rows' => $rows["Processing Rate (ppm)"]);
}else{
echo json_encode(array('status' => 0, 'message' => 'Couldn\'t find processing rate for the give PID.'));
}
}
}
?>
As another user said, you should try renaming your database fields without spaces so part parameters => part_parameters, Part Number => part_number.