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<?php echo preg_replace( '#\[country ln=(.*?)\] | \[cn=(.*?)\](.*?)\[/cn\] | \[/country\] | ,\s*#xie', "(('$1')?'$1:<br />':'').(('$2')?'<img src=\"$2.png\" border=\"0\" alt=\"$3\" class=\"ui-icon-country\" />$3':'')", '[country ln=COUNTRIES][cn=us]USA[/cn], [cn=hu]Hungary[/cn], [cn=ru]Russia[/cn], [cn=gb]Great Britain[/cn][/country]' );

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37.69 ms | 402 KiB | 5 Q