AJAX showing retrieved values as undefined

Question

I am using AJAX to send values to PHP and retrieve the values from PHP. The problem is the value i am getting from PHP is viewed as undefined in AJAX. Please help me solve this

Answer 1

again!!! anyways let me explain...

first you are sending channel by get method in ajax...

data:({channel:channel}),  //here which is just a vairable global variable 
                           //and not assigned any value in your given code... 

so this send channel as empty... and hence your quesry won't work coz that becomes..

$query = "select * from '' "; <-- here you have a singe quote `'` which also gives error

secondly..ajax has type properties and not method..

 type:"GET" //here type is get not method

seeing your php and query .. $channel looks like a tbalename and if it is OVERALL then you can just pass the string in you ajax and if not then you have to assign a tablename to channel in ajax

 type:"GET" //here type is get not method
 data:{channel:"OVERALL"}, //note you don't need an extra bracket here `()`