function abc(){
    return ['a','b','c'];
}
[$a,$b,$c] = abc();
echo "a={$a} b={$b} c={$c}";

echo password_hash("rasmuslerdorf", PASSWORD_DEFAULT);

php -r "echo phpinfo();" | grep "php.ini"

<?php
echo phpinfo();

<?php
header('Access-Control-Allow-Origin: *');
date_default_timezone_set('Asia/Tokyo');
$birth_date = (string)$_POST["birth_date"];
$max_age = (int)$_POST["point_age"];

/**
 * @param string $birth_date
 * @return string|false
 */
function check1($birth_date = ""): bool
{
    $flg = false;
    $str_date = explode("/", $birth_date);
    if (count($str_date) === 3) {
        $flg = true;
        if (!((int)$str_date[0] >= 1000)) {
            $flg = false;
        }
        if(((int)$str_date[0] > (int)date("Y"))){
            $flg = false;
        }
        if (!((int)$str_date[1] >= 1 && (int)$str_date[1] <= 12)) {
            $flg = false;
        }
        if ($flg) {
            if ((int)$str_date[1] === 2) {
                if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 28)) {
                    $flg = false;
                }
                if ((int)$str_date[0] % 4 === 0) {
                    $flg = true;
                    if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 29)) {
                        $flg = false;
                    }
                    if ((int)$str_date[0] % 100 === 0) {
                        $flg = true;
                        if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 28)) {
                            $flg = false;
                        }
                        if ((int)$str_date[0] % 400 === 0) {
                            $flg = true;
                            if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 29)) {
                                $flg = false;
                            }
                        }
                    }
                }
            } else {
                $last_day = [4, 6, 9, 11];
                if (array_search((int)$str_date[1], $last_day, false)!== false) {
                    if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 30)) {
                        $flg = false;
                    }
                } else {
                    if (!((int)$str_date[2] >= 1 && (int)$str_date[2] <= 31)) {
                        $flg = false;
                    }
                }
            }
        }
    }
    return $flg;
}

/**
 * @param int $age
 * @return string|false
 */
function check2($age = 0): bool
{
    $flg = true;
    if ($age < 0) {
        $flg = false;
    }
    return $flg;
}


/**
 * @param string $birth_date
 * @param string $maxage
 * @return string $reslut
 */
function sumup($birth_date, $maxage)
{
    $reslut = [];
    $birth_date_array = explode("/", $birth_date);
    $birth_date = sprintf("%04d%02d%02d", $birth_date_array[0], $birth_date_array[1], $birth_date_array[2]);
    $today = date('Ymd');
    $age = floor(($today - $birth_date) / 10000);
    $day1 = new DateTime("{$birth_date_array[0]}-{$birth_date_array[1]}-{$birth_date_array[2]}");
    $day2 = new DateTime();    
    $interval1 = $day1->diff($day2, true);
    $baseday =  (int)($interval1->format('%a'));
    if ((int)$maxage <= (int)$age) {
        $pointday = 0;
    } else {
        $maxage--;
        $day3 = new DateTime((date('Y') + ($maxage - $age)) . "-{$birth_date_array[1]}-{$birth_date_array[2]}");
        $interval2 = $day2->diff($day3, true);
        $pointday = (int)($interval2->format('%a'))+1;
    }


    $reslut = [
        [
            "result" => "success",
            "age"=>$age ."歳",
            "baseday" => $baseday . "日(生きてきた日数)",
            "pointday" => $pointday . "日(" .($maxage +1). "歳まであと)"
        ]
    ];
    return json_encode($reslut);
}

if (!check1($birth_date)) {
    print json_encode([
        [
            "result" => "error",
            "error" => "string is invalid1"
        ]
    ]);
} elseif (!check2($max_age)) {
    print json_encode([
        [
            "result" => "error",
            "error" => "string is invalid2"
        ]
    ]);
} else {
    print sumup($birth_date, $max_age);
}

document.getElementById("btn").addEventListener("click", async (e) => {
	test1();
	test2();
	test3();
	await test1();
	await test2();
	await test3();
});

function test1() {
	return new Promise(resolve => {
		setTimeout(() => {
			console.log("btn = 1");
			resolve('1');
		}, 3000);
	});
}
function test2() {
	return new Promise(resolve => {
		setTimeout(() => {
			console.log("btn = 2");
			resolve('2');
		}, 2000);
	});
}
async function test3() {
	return new Promise(resolve => {
		setTimeout(() => {
			console.log("btn = 3");
			resolve('3');
		}, 100);
	});
}

window.onload = function(){
	document.body.addEventListener("mousemove",(e)=>{
		var timeInMs = Date.now();
		document.querySelector("#log").innerHTML = navigator.userAgent + "<br>" + "x=" + e.offsetX  + "y=" + e.offsetY;
		var data = {timeInMs:timeInMs,userAgent:navigator.userAgent,x:e.offsetX,y:e.offsetY};
		move_xy(data).then(function(response){
			console.log(response);
		});
		
	});
};

async function move_xy(data){
	return await new Promise(function(resolve) {$.ajax({
		type: "POST",
		dataType: "json",
		url: "./move_xy.php",
		data: data,
		success: function (response) {
			if(response.res==="ok"){
				
				resolve(response);
			}
			resolve(false);
		},
		error:function(XMLHttpRequest, textStatus, errorThrown){
			resolve(false);
		}
	});});
}

<?php
$obj["timeInMs"] = $_POST["timeInMs"];
$obj["userAgent"] = $_POST["userAgent"];
$obj["x"] = $_POST["x"];
$obj["y"] = $_POST["y"];
$obj["res"] = "ok";

print json_encode($obj);

<?php
date_default_timezone_set('Asia/Tokyo');
class Api_Bitflyer_Class
{
    var $basic_url = "https://api.bitflyer.com";
    public function __construct()
    {
        require_once __DIR__."/../common/init.php";
    }
    /**
     * @param timestamp $timestamp
     * @param string $path
     * @param string $method
     * @param string $body
     */  
    public function api_set($timestamp = "", $path = "/v1/me/getbalance", $method = "GET", $body = "")
    {
        $url = $this->basic_url . $path;
        $data = strtolower($method) === "get" ? $timestamp . $method . $path : $timestamp . $method . $path . (function ($body) {
            if (!is_array($body)) {
                $body = [];
            }
            return json_encode($body);
        })($body);
        $access_singn = hash_hmac("sha256", $data, APISECRET);
        $headers = [
            'ACCESS-KEY: ' . APIKEY,
            'ACCESS-TIMESTAMP: ' . $timestamp,
            'ACCESS-SIGN: ' . $access_singn,
            'Content-Type: application/json',
        ];
        return new class($url, $method, $headers, $body)
        {
            var $url = "";
            var $method = "";
            var $headers = "";
            var $body = "";
            /**
             * @param string $url
             * @param string $method
             * @param string $headers
             * @param string $body
             */              
            public function __construct($url, $method, $headers, $body)
            {
                $this->url = $url;
                $this->method = $method;
                $this->headers = $headers;
                $this->body = $body;
            }
            public function api_run()
            {
                $curl = curl_init();
                curl_setopt($curl, CURLOPT_URL, $this->url);
                curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $this->method);
                curl_setopt($curl, CURLOPT_HTTPHEADER, $this->headers);
                strtolower($this->method) == "post" ? curl_setopt($curl, CURLOPT_POSTFIELDS, $this->body) : "";
                curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
                curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
                $response             = curl_exec($curl);
                // $response_info        = curl_getinfo($curl);
                // $response_code        = $response_info['http_code'];
                // $response_header_size = $response_info['header_size'];
                curl_close($curl);
                print date("Y/m/d H:i:s");
                var_dump(json_decode($response));
                // var_dump($response_code);
                // var_dump($response_header_size);
            }
        };
    }
}

$Api_Bitflyer_Class = new Api_Bitflyer_Class();
$Api_Bitflyer_Class->api_set(time(),"/v1/me/getbalance","GET","")->api_run();

<?php
//$_POST["sh"]...検索キーワード 
if ($_POST["sh"]) {
	$sh = urlencode(@xss_defence($_POST["sh"]));
	$res = simplexml_load_file("https://news.google.com/news/rss/headlines/section/q/$sh/?ned=jp&hl=ja&gl=JP");
	rss($res);
}
function rss(object $obj = null):void
{
	if (isset($obj->channel->item)) {
		if ($obj->channel->item) {
			$cnt = 0;
			foreach ($obj->channel->item as $item) {
				$result[$cnt]["title"] = (string)$item->title;
				$result[$cnt]["link"] = (string)$item->link;
				$result[$cnt]["pubDate"] = (string)$item->pubDate;
				$result[$cnt]["description"] = (string)$item->description;
				$result[$cnt]["source"] = (string)$item->source;
				$cnt++;
			}
		}
	}
	echo json_encode($result);
}

function xss_defence(mixed $val):mixed
{

    if(!isset($val))return false;
    if(is_array($val)){
        foreach ($val as $key => $value) {
            # code...
            $val[$key] = strip_tags($value);
            $val[$key] = htmlentities($val[$key],ENT_QUOTES);
        }
    }else{
        $val = strip_tags($val);
        $val = htmlentities($val,ENT_QUOTES);
    }
    return $val;
}