Adding comments to PHP scripts

…It doesn't matter how experienced you become at…writing php or any other type of code.…When you come back to a script several…months later, the meaning won't always be obvious.…So it's useful to add comments to remind you what the code was for.…Comments are also a useful way of…disabling parts of a script when troubleshooting problems.…PHP has three different styles of comments.…Two of them are the same as in JavaScript, so let's deal with them first.…And to make it a little bit easier to see where the comments are, I'm going…to reorganize the script in this page so the PHP is on a beginning of a line.…

Just move that.…The first style of comment is anything between…two forward slashes and the end of the line.…Is treated as a comment and ignored by the php engine.…So, after this echo stringtoupper city I'm going to add a comment.…I type in two forward slashes.…And I'm using Dream Weaver as my editor.…You can see that it's already changed the color to orange.…That's syntax highlighting,…telling me that I'm actually doing a comment,…