I have 2 php variables:
$account_name
$my
If I use function:
var_dump($account_name);
I get:
string(192) "admin"
$account_name is displayed like a link to account name
If I use function:
var_dump($my);
I get:
string(5) "admin"
How can I change variable $account_name that return my only "admin" String.
I have problem because if I use $account_name in SQL query nothing happens but if I use $my it works.
It might be the case that your $account_name contains html tags. Since you are viewing it in browser, it is processed as html. You need to extract the value from those tags.
Take a look at this post.
Try:
$account_name = strip_tags($account_name);
It is likely that your string contains non readable characters. Try to strip the string using this example:
var_dump(preg_replace("/[^(\x20-\x7F)]*/", '', $account_name));
If it works it should return: string(5) "admin"
How are you setting your variables?
If you're getting it from a form like this:
<form action="/" method="get">
<input name="username" placeholder="Username">
<button>click me</button>
</form>
you should simply collect the value of the input extracting the value in php
<?php $account_name = $_GET["username"]; echo $account_name; ?>
In some cases you might want to strip the variables strip($_GET["username"]); to remove spaces before and after the string