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7.22 三元运算和if else
大灰狼的博客
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//php 5 的三目运算符

$name = isset($_GET['name']) ? $_GET['name'] : '' ;

// 等价的 PHP 7 新写法

$name = $_GET['name'] ?? '';


//php 5 的三目运算

<?php echo isset($_POST['email']) ? $_POST['email'] : '' ; ?>

//等价的 php7 三目运算

<?= $_POST['email'] ?? '' ; ?>

有空了 我再来更新~

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