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--- uphp:uphp_language_basics [2017/02/12 11:03]
jeff
+++ uphp:uphp_language_basics [2021/09/13 05:57] (current)
@@ Line 1: / Line 1: @@
-====== uPHP Language Basics ======
+======uPHP Language Basics======
 The following sections describe how to work with uPHP scripts.
-===== uPHP Tags =====
+=====uPHP Tags=====
+When [[hardware:wattmons|Wattmon]] parses a file, it looks for opening and closing tags, which are ''<?'' and ''?>'' respectively. This tells [[hardware:wattmons|Wattmon]] to start and stop interpreting the uPHP 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.
-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’);
+  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:
+In addition, you can integrate multiple code blocks within 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><?
+<code php>
+<?
-If ($mycondition > 5) {
+  If ($mycondition > 5) {
-?> This will only be output if my condition > 5
+    ?> This will only be output if my condition > 5 <?
-<? } else { ?>
+  } else {
-This will be output if the first condition is not true.
+    ?> This will be output if the first condition is not true. <?
-<? } ?>
+  }
+?>
 </code>
-===== Instruction Separation =====
+=====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 =====
+=====Comments=====
 uPHP supports 'C', 'C++' and Unix shell-style (Perl style) comments. For example:
-<code php><?
+<code php>
-// comment 1
+<?
-$x=1;
+  // comment 1
-#comment2
+  $x=1;
-$x=2;
+  # comment2
-print($x);
+  $x=2;
-/* comment 3 */
+  print($x);
-$x=3;
+  /* comment 3 */
-print($x);
+  $x=3;
+  print($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.
+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><?
+<code php>
+<?
 /*
-    echo 'This is a test'; /* This comment will cause a problem */
+echo 'This is a test'; /* This comment will cause a problem */
- */ ?>
+echo 'Print this also';
+*/
+?>
 </code>
-===== Programmer Reference =====
+=====Programmer Reference=====
+  * [[functions|uPHP Function Reference]] - The entire function list (advanced)
-  * [[.functions:uphp_function_reference|uPHP Reference]]
+  * [[uPHP Special Variables]] - Special arrays that are populated automatically before a script is run
-  * [[.uphp_special_variables|uPHP Special Variables]]

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