IF语句没有在PHP中运行

Question

I have a code to declare a variable and then an IF statement which uses that variable to either display, or not display an image.

This code is before HTML

<?php $contents = file("textdocument.txt") ?>

This code is in the HTML

<?php if ( $contents = 10 ) { 
echo '<img src="image.png" name="image" border="0">'; }
else {echo "wrong number"; } ?>

The problem I get is no matter what the number is, the image always displays. Do you guys have any solutions for this?

Answer 1

<?php if ( $contents = 10 ) { 

should be

<?php if ( $contents == 10 ) { 

Don't worry, it's a common mistake :)