PHP Basics 1

Php:hypertext Preprocessor Hypertext Preprocessor

1, user-defined functions, classes and keywords are not sensitive to capitalization such as: echo Echo effect

2. Variable names are case sensitive such as: $y and $Y are 2 variables

3, global keywords used to access globals, functions to access global variables $x, add global reference such as: function Test () {global $x; ...}

4, Static is used to save the value of the local variable, such as the variable in the function static $x = 0;

5, Echo can also output HTML tags, such as: echo "<br>";

6, Echo can output more than 1 strings; print can only output 1 strings at a time and return 1

7, Var_dump () returns the data type and value of the variable

PHP Basics 1