This prevents anyone else from using the tables while you have them locked. It can also be used to execute a group of statements as a unit.
LOCK TABLES inventory WRITE
SELECT quantity FROM inventory WHERE item=”abc”
UPDATE inventory SET quantity=’123′ WHERE item=”abc”
UNLOCK TABLES
We use WRITE lock here because we need to modify the inventory table. If you [...]

The fwrite function is used to write data to a text file. This function has two parameters. The first parameter is the file handle and second one is the string of data to be written.
To be written, the file must be opened first using the fopen function.
fopen(filename, mode)
The mode parameter specifies the type of access [...]

How to remove the underline for a url text which is there by default? Actually this is easy but for some people this is quite distressing. You can do that using CSS:
<a style=”text-decoration: none;” href=”#”>link text</a>
Okay! Hope this solve your problem!