[技术博客] 演示函数中引用外部变量的5种方法, 字符串函数进行演示

Assignment 0810

演示函数中引用外部变量的5种方法

Method 1

$newShoes = 'Kyrie7';
function displayShoes():string
{
    return "Use \$GLOBALS read outside varible:".$GLOBALS['newShoes']."<HR>";
}
echo displayShoes();

Method 2

$newShoes2 = 'KD14';
function displayShoes2():string
{
    global $newShoes2;
    return "Use global inside of function to read from outside:".$newShoes2."<HR>";
}
echo displayShoes2();

Method 3

$newShoes3 = "PG6";
$displayShoes3 = function() use ($newShoes3){
    return "Use \"use\" to read a outside varible:".$newShoes3."<HR>";
};
echo $displayShoes3();

Method 4

$newShoes4 = "KOBE5";
$displayShoes4 = fn() => "Use arrow function to read a outside varible:".$newShoes4."<HR>";
echo $displayShoes4();

Method 5

$newShoes5 = "KyrieLow4";
function displayShoes5(string $shoeName){
    return "Use function to read a outside varible:".$shoeName."<HR>";
}
echo displayShoes5($newShoes5);

5 string functions

1.MD5

$password = "mypasswordforgmail567";
echo MD5($password)."<HR>";

2.chuck_split

echo $new_string = chunk_split($password,6,",");
echo "<HR>";
// var_dump($new_string);

3.str_ireplace

echo $new_string2 = str_ireplace("gmail","office365",$password)."<HR>";

4.str_split

$newArray = str_split($password,2);
foreach($newArray as $newItem){
    echo $newItem."<BR>";
}
echo "<HR>";

5.explode 非常喜欢，想多练习一下

$finalArray = rtrim($new_string,",");
$splitedArray = explode(',',$finalArray);
foreach($splitedArray as $newItem2){
    echo $newItem2."<BR>";
}

foreach($splitedArray as $newItem2){
echo $newItem2.”<BR>“;
}