Simple PHP Code; Blank Screen?
I'm just starting to learn PHP. I have a friend who's fairly good at it, and had him look at my code, and he couldn't see anything wrong with it, and said I should try here.
Basically, I was just playing around and wanted to make a simple "to-do" list.
Here is the code for my 开发者_开发百科index.php file:
<html>
<title>
Tasks
</title>
<body>
<?php
echo "I have so many tasks to do...";
<br>
<br>
include("tasks.php");
?>
<br>
<br>
</body>
</html>
And, finally, my tasks.php file:
<ol>
<li> 1. Wow.
<li> 2. Cool.
<li> 4. Oops.
</ol>
It seems to me like it should be working, but all I get is a white screen. If I take out the include statement, I get the echo statement fine, so I think it must be something wrong with the include statement. Also, I have made sure that the index.php and tasks.php file are in the same directory.
Thank you all so much for your help.
change
<?php
echo "I have so many tasks to do...";
<br>
<br>
include("tasks.php");
?>
to
<?php
echo "I have so many tasks to do...";
?>
<br />
<br />
<?php
include("tasks.php");
?>
PS: you should realy try to write correct html - you havn't closed you li-elements and you havn't written the br as empty element (<br />, not <br>)
Add error_reporting(E_ALL) on the top of script, then you will know what is wrong.
You've not included the break line tags
correctly inside your PHP:
<html>
<title>
Tasks
</title>
<body>
<?php
echo "I have so many tasks to do...<br><br>";
include("tasks.php");
?>
<br>
<br>
</body>
</html>
There are 2 errors:
1-
<br> cannot be inserted into <?php ?> tags. It is an html tag that must be out of the php code or inside a string.
So close the <?php with ?> before <br> and re open them before the include as already pointed out.
2- <li> tags must be closed with </li> but that is not the meaning of the blank page.
The page is blank due to the parse error the php compiler output because of the two "
".
It seems that you have your error_reporting(0) to 0. Please set on the top of your page the following code:
error_reporting(E_ALL);
So that you will be able to output error messages and fix them.
Problem is that you have mixed <br> tags in php code:
<?php
echo "I have so many tasks to do...";
<br> // <-- Wrong
<br> // <-- Wrong
include("tasks.php");
?>
Should be:
<?php
echo "I have so many tasks to do...";
?>
<br />
<br />
<?php
include("tasks.php");
?>
Or:
<?php
echo "I have so many tasks to do...";
echo '<br />';
echo '<br />';
include("tasks.php");
?>
You have also not written closing tags for li:
<ol>
<li> 1. Wow.
<li> 2. Cool.
<li> 4. Oops.
</ol>
Should be:
<ol>
<li> 1. Wow. </li>
<li> 2. Cool. </li>
<li> 4. Oops. </li>
</ol>
Note: To get error messages/description on your screen rather than blank window, put these two lines on top of your script:
ini_set('display_errors', true);
error_reporting(E_ALL);
You use <br> tags inside of PHP script which isn't permitted. You'll have to change
<?php
echo "I have so many tasks to do...";
<br>
<br>
include("tasks.php");
?>
into
<?php
echo "I have so many tasks to do...";
?>
<br>
<br>
<?php
include("tasks.php");
?>
Eventually you could also put <br> tags inside of your echo:
<?php
echo "I have so many tasks to do...<br /><br />";
include("tasks.php");
?>
which would have the same effect.
blank screen probably means You're using production server error-reporting, try
error_reporting(E_ALL ^ E_NOTICE);
on first row after the open-php-tag
To summarise what you have been told:
<html>
<title>
Tasks
</title>
<body>
<?php
echo "I have so many tasks to do...";
?>
<br>
<br>
<?php
include("tasks.php");
?>
<br>
<br>
</body>
</html>
Should be your main and:
<ol>
<li> 1. Wow. </li>
<li> 2. Cool. </li>
<li> 4. Oops. </li>
</ol>
Should be tasks.php
加载中,请稍侯......
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