Question

Please, how can I replace $example to %example% using PHP? I am a novice.

For example, I have –

<textarea>hi %myusername%</textarea>
<input submit>

I want, if submitted, the %myusername% should change to $user and save to my database.

Answer 1

A simple string replacement method would work fine for this. Take a look at str_replace() –

str_replace – Replace all occurrences of the search string with the replacement string

$user = "Lordcash Tugbaski";
$string = "Hi %myusername%";
$searchString = "%myusername%";
$replacement = $user;
$finalString = str_replace($searchString, $replacement, $string);
// Hi Lordcash Tugbaski

With regard to saving this data to a database, it really depends on your implementation. All you’ll really have to do is place this value into an sql INSERT query.