PHP conditional statements and ternary operators

巴扎黑
Release: 2016-11-22 15:01:35
Original
1887 people have browsed it

<?php
$n1=1000;
$n2=1000;
$n3=100;
$n4=100;
// if 语句 - 如果指定条件为真,则执行代码
// if...else 语句 - 如果条件为 true,则执行代码;如果条件为 false,则执行另一端代码
// if...elseif....else 语句 - 选择若干段代码块之一来执行
// switch 语句 - 语句多个代码块之一来执行
//条件判断语句
if($n1==$n2)echo &#39;true&#39;;else echo &#39;false&#39;;
echo &#39;<br>&#39;;
// 三元运算符不是一种必不可少的结构,但却是一种美化代码的途径。
// 同样,它可以取代不好的if…else代码块,并且可以提高代码的可读性。
//三元运算符
echo $str = $n3==$n4?&#39;true&#39;:&#39;false&#39;;
//输出 true true
?>
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