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// hello.world
echo '$test.world' // µ¥ÒýºÅ' ' ÔÑùÊä³ö $test.world
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<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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$arr = array();
$arr[] = '';
2.
$arr = array();
array_push($arr,'');
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