PHP 内联 IF
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PHP Inline IF
提问by Graeme
Firstly, PHP is not my forte... although not sure what is!
首先,PHP 不是我的强项...虽然不确定是什么!
I saw an example in the PHP Manual:
我在 PHP 手册中看到了一个例子:
<?php
$var = TRUE;
echo $var==TRUE ? 'TRUE' : 'FALSE'; // get TRUE
echo $var==FALSE ? 'TRUE' : 'FALSE'; // get FALSE
?>
and am trying to integrate something similar as part of a single line output. My line looks like this:
并试图将类似的东西集成为单行输出的一部分。我的线路看起来像这样:
echo "...text..." . $db_field['late']==0 ? ' ' : $db_field['late'] . "...more text...";
Logically what I want to do is: if 'late' = 0 then display nothing else display the content of 'late'.
从逻辑上讲,我想要做的是:如果 'late' = 0 然后不显示任何其他内容显示 'late' 的内容。
Am I just trying to be too clever?
我只是想变得太聪明吗?
Thanks in advance
提前致谢
Graeme
格雷姆
回答by luiges90
Because the precedence of ternary operator ?:
is very low. To fix this, use brackets
因为三元运算符的优先级?:
很低。要解决此问题,请使用括号
echo "...text..." . ($db_field['late']==0 ? ' ' : $db_field['late']) . "...more text...";
回答by u1813888
echo "...text..." . ( $db_field['late']==0 ? ' ' : $db_field['late'] ) . "...more text...";