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--- uphp:uphp_language_basics [2017/02/12 10:51]
jeff created
+++ uphp:uphp_language_basics [2021/09/13 05:57]
@@ Line 1: / Line 1: @@
-====== uPHP Language Basics ======
-The following sections describe how to work with uPHP scripts.
-===== uPHP Tags =====
-When Wattmon parses a file, it looks for opening and closing tags, which are ''<?'' and ''?>'' respecively. This tells Wattmon to start and stop interpreting the code between them. Parsing in this manner allows you to integrate script code within an HTML file as everything outside of a pair of opening and closing tags is ignored by the uPHP parser.
-<code php>
-Some text
-<?
-print(‘hello, uPHP’);
-?>
-Some more text
-</code>
-In addition, you can integrate multiple code blocks with a page, even if it is within a uPHP code block.  For example if you wished to display a block of HTML based on a uPHP condition, it would go something like this:
-<code php><?
-If ($mycondition > 5) {
-?> This will only be output if my condition > 5
-<? } else { ?>
-This will be output if the first condition is not true.
-<? } ?>
-</code>
-===== Instruction Separation =====
-As in C and PHP, uPHP requires instructions to be terminated with a semicolon at the end of each statement. The closing tag of a block of uPHP code automatically implies a semicolon; you do not need to have a semicolon terminating the last line of a uPHP block. The closing tag for the block will include the immediately trailing newline if one is present.
-===== Comments =====
-uPHP supports 'C', 'C++' and Unix shell-style (Perl style) comments. For example:
-<code php><?
-// comment 1
-$x=1;
-#comment2
-$x=2;
-print($x);
-/* comment 3 */
-$x=3;
-print($x);
-?>
-</code>
-The "one-line" comment styles only comment to the end of the line or the current block of uPHP code, whichever comes first. This means that HTML code after // ... ?> or # ... ?> WILL be printed: ?> breaks out of uPHP mode and returns to HTML mode, and // or ''#'' cannot influence that.
-'C' style comments end at the first ''*/'' encountered. Make sure you don't nest 'C' style comments. It is easy to make this mistake if you are trying to comment out a large block of code.
-<code php><?
-/*
-    echo 'This is a test'; /* This comment will cause a problem */
- */ ?>
-</code>
-===== Programmer Reference =====
-  * [[functions:uphp_function_reference|uPHP Reference]]
-  * [[wiki:uPHP Special Variables|uPHP Special Variables]]

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