PHP7的新特性list的括号写法和AST
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<p>$arr = ;</p>
<p>list($a,$b,$c) = $arr;</p>
<p>输出结果：</p>
<p>$a = 1;</p>
<p>$b = 2;</p>
<p>$c = 3;</p>
<p>php7新的写法</p>
<p>$arr =;</p>
<p>[$a,$b,$c] =$arr;</p>
<h2>抽象语法树写法</h2>
<p>($a)['b'] = 1;</p>
<p></p>
<p> </p>
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