But it's give a many information using $e->getTrace()
is this correct. If there are several mysql_query then
I can put it as bunch within try block and catch
exception easily.
No, it doesn't give any such information.
1 :<?php
2 :mysql_connect('server', 'username', 'password');
3 :mysql_select_db('database_name');
4 :
5 :try{
6 : $result = mysql_query('SELECT * from unknowntable');
7 : echo __LINE__ . "\n";
8 :}catch(exception $e){
9 : echo __LINE__ . "\n";
10:}
Line numbers added for effect.
It will print the line number in the "try".
It never prints the line number in the "catch".
$ php -f ./test.php
7
In second approach for every query I have to write
throw new MySQLException("My Message"). It's very time
consuming isn't it?
Use a database abstraction layer and run everything through that or
simply use a function.
function Query($query='')
{
if (!$query) {
throw new Exception("No query passed to Query method");
}
$result = mysql_query($query);
if (!$result) {
throw new Exception("Query " . $query . " is invalid.");
}
return $result;
}
Then simply:
$myquery = "select * from table_that_exists";
try {
$result = Query($myquery);
echo "Got result \n";
} catch (Exception $e) {
echo $e->getMessage() . "\n";
// ... do whatever here.
}
$myquery = "select * from table_that_doesnt_exist";
try {
$result = Query($myquery);
echo "Got result\n";
} catch (Exception $e) {
echo $e->getMessage() . "\n";
// ... do whatever here.
}
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