PHP基本语法学习笔记

PHP学习笔记

";
$arr=array(1,2,3,4);
print_r($arr);
echo "
";
echo $arr[0];
echo "
";
$dict=array("name"=>"yaoyi","age"=>"21");
print_r($dict);
echo "
";
echo $dict["name"];

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

    foreach ($cars as $name){
            echo $name."今年".$persons[$name]."岁"."
";
    }



?>

输出

 

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岁
yaoyi今年22岁
yorkmass今年110岁