PHP. Double entry: on page load and data save

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PHP

I have a PHP code that adds some text on specified location. Its working fine except for one problem. If i hard code the value in a variable to be inserted on the same page, then the insertion is done according to my requirement.

but when i take the value for that variable via an html form, then on page load, it makes a blank entry and when i save the entered value, then it creates the desired result. that is, its making a blank along with desired entry, when i am using a form to enter the value dynamically.

Anyone!, please help!

I need to enter the value via form field, but dont that blank entry.

Thanks in advance.

regards,
aN