Self-study demonstration for getting started with PHP, self-study demonstration for getting started with PHP_PHP tutorial

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//Function definition

function name(){

echo "This is a parameterless function";

}

name();//no parameter function call

function name($age,$height){

　print "This is a parameterized function
";

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

}

name(20,170);

/*

The following are some knowledge points recorded by newcomers’ self-study. If the masters don’t like it, please don’t comment.

There are two main types of output statements in PHP;

1: print, output a single variable or string;

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

3: PHP is a weakly typed language;

4: Loops, judgments, and branch selection statements in php are similar to statements in C# and 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 does not necessarily start from [0], but the "age", "height" and "weight" we define ourselves;

If you want to get the elements in the array, you can only use $man["age"], $man["height"], $man["height"];

*/

?>

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