See if one item in array is true

Question

I'm trying to put a menu together where it will sense what page is loaded. This site is not done in a CMS and is straight PHP/HTML code.

I currently have the navigation working for the primary links. There is a dropdown where I am having problems. I need to be able to see if the parent or any dropdown children are active. If one of the children are active. In the example below this is "FAQ" and the children are "FAQ1," "FAQ2," and "FAQ3."

For this example I'm using a CSS state called "active."

<style>
a{color:red;}
.active{color:blue;}
</style>

Here is the script used for the menu. The links for Home, Products, and Contact are working as expected.

<ul>
<li><a href="index.php" id="homenav" <?php if (strpos($_SERVER['PHP_SELF'], 'index.php')) echo 'class="active"';?>>Home</a></li>
<li><a href="products.php" id ="prodnav" <?php if (strpos($_SERVER['PHP_SELF'], 'products.php')) echo 'class="active"';?>>Products</a></li>
<li><a href="faq.php" id ="faqnav" <?php if (strpos($_SERVER['PHP_SELF'], 'faq.php, faq1.php, faq2.php, faq3.php')) echo 'class="active"';?>>FAQ</a>
    <ul>
        <li><a href="faq1.php">FAQ1</a></li>
        <li><a href="faq2.php">FAQ2</a></li>
        <li><a href="faq3.php">FAQ3</a></li>
    </ul>
</li>
<li><a href="contact.php" id ="connav" <?php if (strpos($_SERVER['PHP_SELF'], 'contact.php')) echo 'class="active"';?>>contact us</a></li>
</ul>

Can I please get some help on how I should be writing this line to let it work the way the others are?

<li>
    <a href="faq.php" id ="faqnav" 
    <?php 
    if (strpos($_SERVER['PHP_SELF'], 'faq.php, faq1.php, faq2.php, faq3.php')) 
    echo 'class="active"'; 
    ?>
    >FAQ</a>
</li>

Have you looked at this question? http://stackoverflow.com/questions/6284553/using-an-array-as-needles-in-strpos — user1408643, Jan 13 '14 at 23:05

Phil · Accepted Answer · 2014-01-14T22:38:45.093

2

strpos() only accepts one string per parameter, you can not give it a list. Try this:

<?php if (in_array(basename($_SERVER['PHP_SELF']), array('faq.php', 'faq1.php', 'faq2.php', 'faq3.php'))) echo 'class="active"';?>

basename() strips the path from the filename, so you only have the pure file name
in_array() then checks if this path is in an array
array() generates an array of strings to be handed over to in_array(). Note that there are 4 separate strings, not one long one as in your code.

edited Jan 14 '14 at 22:38

answered Jan 13 '14 at 23:02

Phil

818
5
14

Your code gave me an error message. However changing it to: `` works. It was missing a closing ). Thanks! – Michele Jan 14 '14 at 16:02

score 0 · Answer 2 · answered Jan 13 '14 at 23:02

0

Use in_array for this purpose:

if (in_array($_SERVER['PHP_SELF'], array('faq.php', 'faq1.php', 'faq2.php', 'faq3.php')) echo 'class="active"';

http://php.net/manual/de/function.in-array.php

answered Jan 13 '14 at 23:02

Ke Vin

2,004
1
18
28

1

`in_array` is not equivalent to `strpos` in this case. For example, if `$_SERVER['PHP_SELF'] == 'en/faq.php'` then `strpos` would correctly recognize you as being on the FAQ page while the `in_array` solution would not. MrTweeks answer is better, in that respect. – CompuChip Jan 13 '14 at 23:04

score 0 · Answer 3 · answered Jan 13 '14 at 23:02

If you don't have any other pages that contain faq, you can simply use:

if (strpos($_SERVER['PHP_SELF'], 'faq') !== false)

Note that I am using !== false as strpos can return 0 when faq is found at the beginning of your string. You should probably use that for your other comparisons too.

Otherwise, go with the in_array solution of @MrTweek.

See if one item in array is true

3 Answers3