Introduction to PHP Self-learning small display, PHP introductory self-study show _php tutorial

PHP Introductory Self-study mini-show, PHP introductory self-study show

　　

　　　　　　PHP function Small Display

　　

function definition

Function name () {

echo "This is a non-parametric function";

}

Name ();//no parameter function call

Function name ($age, $height) {

Print "This is an argument function
”；

echo "height". $height. ", Age:". $age. " CM ";

}

Name (20,170);

/*

The following is the new self-study of some of the knowledge points recorded, the great God do not like to spray oh.

There are two main kinds of output statements in PHP;

1:print, output a single variable or string;

2:echo, the output of multiple variables or strings, and execution efficiency is much faster than print.

3:php is a weakly typed language;

In the 4:php, the loops, the judgment, the Select branch statements are similar to the statements in the C#,JS;

5: The array naming method is a bit unique:

$arr =array (Key=>value,key=>value,...);

Example: $man =array ("Age" =>20, "height" =>172, "weight" =>60);

The index is not necessarily starting from [0], but our own definition of "age", "height", "weight";

To get the elements in the array, you can only pass the way of $man["age", $man ["height"], $man ["height"];

*/

?>

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