Simple if, then, else

[smordue]

I am a real newbie at PHP and coding in general.

 

I am trying to write a statement that will show a list item if anything is in a particular line of a flat file, but not show it if it is blank. It is for a navigation menu list.

 

Something along the lines of this logic:

 

if

  line 5 of data.txt contains "about"

  then echo <li>About</li>

else

  show nothing

endif

 

Anybody know how to do this?

[Alex]

$file = file('data.txt');
if(strpos($file[4], 'about') !== false)
{
     echo "<li>About</li>";
}

 

file

strpos

[smordue]

Thanks Alex, when I insert that code the browser says:

 

Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /nav.php on line 13

 

referring to this line:      echo "<li>About</li>";

[Alex]

There's no error there, post your entire code.

[smordue]

<?
$file = file('data.txt');
if(strpos($lines[4], 'about') !== false)
{
     echo "<li class='<?php if (strpos($_SERVER['PHP_SELF'], 'about.php')) echo 'active';?>'><a href='about_us.php'>About Us</a></li>";
}
?>        

[smordue]

I think this is the script in the script issue, how can I rewrite this?

[Alex]

You can't have nested PHP tags..

 

<?php
$file = file('data.txt');
if(strpos($lines[4], 'about') !== false)
{
     $class = (strpos($_SERVER['PHP_SELF'], 'about.php') ? 'active' : null;
     echo "<li class='$class'><a href='about_us.php'>About Us</a></li>";
}
?>    

[smordue]

Hmm, that throws this:

 

Parse error: syntax error, unexpected ';' in /nav.php on line 9

 

<div id="menu" class="container">
<ul>
        <li class="<?php if (strpos($_SERVER['PHP_SELF'], 'index.php')) echo 'active';?>"><a href="index.php">Home</a></li>
<?php
$file = file('basedata.txt');
if(strpos($lines[18], 'about') !== false)
{
     $class = (strpos($_SERVER['PHP_SELF'], 'about.php') ? 'active' : null;
     echo "<li class='$class'><a href='about_us.php'>About Us</a></li>";
}
?> 
        <li class="<? if (strpos($_SERVER['PHP_SELF'], 'services.php')) echo 'active';?>"><a href="services.php">Services</a></li>

        <li class="<? if (strpos($_SERVER['PHP_SELF'], 'ourpeople.php')) echo 'active';?>"><a href="ourpeople.php">Our People</a></li>

        <li class="<? if (strpos($_SERVER['PHP_SELF'], 'photos.php')) echo 'active';?>"><a href="photos.php">Gallery</a></li>

        <li class="<? if (strpos($_SERVER['PHP_SELF'], 'contact.php')) echo 'active';?>"><a href="contact.php">Contact us</a></li>

</ul>
</div><!--end menu-->

 

I really appreciate the help.

[Alex]

Forgot a closing ), sorry.

 

$class = (strpos($_SERVER['PHP_SELF'], 'about.php')) ? 'active' : null;

[smordue]

Awesome Alex, thanks