PHP Basic Usage

1. Use commas to link data to echo $num. "
";

2. Weakly typed function foo ($var 1, $var 2) {}

Function tool (& $var 1,& $var 3) {} operable external variables

Declaring a function, you can use it directly below

3. The difference between "and" ", the single quotation mark does not parse the variable, only is the character.

4. $dir =opendir ("image"); $file =readdir ($dir); Echo $file;

5. include the file under the current directory, if it is HTML display HTML, is txt display txt, is PHP, parsing php

6. include only one time

7.require static include: For example, the tail contains a relatively fixed

Include dynamic include: is in the structure of the function can be included, for example: include "Image/temp.txt";

8. Use '

'     '/
'  can show some of the original formatting
   
9.var_dump  and Print_r   Hava the same function, but Var_dum would give the varible information
   
10.
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