Pattern found#17 - PHP: multiple encoded, most probably obfuscated code found

[Yiannistaos]

My Joomla! version is the 3.5.0-rc.

From JED Checker (component), I've got this.

Rule Jamss - JAMSS - Joomla! Anti-Malware Scan Script

001

example.php in line: 63
Pattern found#17 - PHP: multiple encoded, most probably obfuscated code found

My code in line 63 is:
$test = preg_replace("/(plg_|com_|mod_)/", "$replacement_string", $string);
echo $test;

Why is the code obfuscated? Can you give me another code example to pass the test?

Thanks.

[bdthemes]

me too.
str_replace('licon:', '', $atts['icon']); show error here in my plugin so how we use str_replace()?