How to fix my PHP inline if using ternary operator?

Question

I saw an example in the PHP Manual:

<?php
$var = TRUE;
echo $var==TRUE ? 'TRUE' : 'FALSE'; // get TRUE
echo $var==FALSE ? 'TRUE' : 'FALSE'; // get FALSE
?>

and I am trying to integrate something similar as part of a single line output. My line looks like this:

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'.

Am I just trying to be too clever?

luiges90 · Accepted Answer · 2013-06-10 02:22:35Z

30

Because the precedence of ternary operator ?: is very low. To fix this, use brackets

echo "...text..." . ($db_field['late']==0 ? ' ' : $db_field['late']) . "...more text...";

answered Jun 10, 2013 at 2:12

luiges90

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2 Comments

Perfect. Worked a treat. No idea what a 'ternary operator' is but thanks.

A ternary operator is what you meant by "inline if"

Tamil Selvan C · Accepted Answer · 2013-06-10 02:13:51Z

3

echo "...text..." . ( $db_field['late']==0 ? ' ' : $db_field['late'] )  . "...more text...";

Tamil Selvan C

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answered Jun 10, 2013 at 2:12

蒋艾伦

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