PHP基本語法學習筆記

PHP學習筆記

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2018/12/23
 * Time: 14:39
 */

function test_input($data) {
    $data = trim($data);
    $data = stripslashes($data);
    $data = htmlspecialchars($data);
    return $data;
}
$num=10;
echo $num ;
echo "<br>";
$arr=array(1,2,3,4);
print_r($arr);
echo "<br>";
echo $arr[0];
echo "<br>";
$dict=array("name"=>"yaoyi","age"=>"21");
print_r($dict);
echo "<br>";
echo $dict["name"];

$num1=-111;
var_dump($num1);
echo strpos("nihao sad","sad");
define("nihao","woshinibaba",false);
echo "<br>";
echo nihao;
echo "<br>";
$cars=array("yy","yaoyi","yorkmass");
foreach ($cars as $value1){
    echo $value1."<br>";
}
$persons=array("yy"=>"12","yorkmass"=>"110","yaoyi"=>"22");

    foreach ($cars as $name){
            echo $name."今年".$persons[$name]."歲"."<br>";
    }



?>

輸出

 

10
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 ) 
1
Array ( [name] => yaoyi [age] => 21 ) 
yaoyiint(-111) 6
woshinibaba
yy
yaoyi
yorkmass
yy今年12歲
yaoyi今年22歲
yorkmass今年110歲