Description:
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I have an webspace account with PHP 5.5 on www.hetzner.de.

If i use the function "htmlentities", define a variable with htmlcode and commit the var as function- parameter, nothing happens.

I start error_reporting, but no errors are displayed. 

If i use the htmlentities function twice on an var, i see the correct output. 
I tested it with different character sets and flags.

See my testscript.

The problem appears on an local linux ubuntu server with PHP Version 5.3.2-1ubuntu4.25

and on my webspace account with PHP Version 5.5

Test script:
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This Example -->> doesn't <<-- work on my system: 

$str = "A 'quote' is <b>bold</b>";

// Outputs: A 'quote' is &lt;b&gt;bold&lt;/b&gt;
echo htmlentities($str);



This Example -->> work <<-- on my system: 


$str = "A 'quote' is <b>bold</b>";

// Outputs: A 'quote' is &lt;b&gt;bold&lt;/b&gt;
echo htmlentities(htmlentities($str));