csu3_am335x/EVSE/rootfs/var/www/get_button_action.php

<?php
	// 設置資料類型 json，編碼格式 utf-8
	header('Content-Type: application/json; charset=UTF-8');
	
	// 判斷如果是 GET 請求，則進行搜尋；如果是 POST 請求，則進行新建
	// $_SERVER['REQUEST_METHOD'] 返回訪問頁面使用的請求方法
	if ($_SERVER['REQUEST_METHOD'] == "GET") {
		create();
	} else if ($_SERVER['REQUEST_METHOD'] == "POST") {
		create();
	}

	function create() {
		chdir("/root");
		exec("'./WebService' 'button'",$output,$return_var);
		if(count($output)==0){
//			echo '<script>alert("Something went wrong on machine");</script>';
			echo "Something went wrong on machine";
			exit;
		}
		if(trim($output[0])=="InitShareMemory Error"){
//			echo '<script>alert("InitShareMemory Error");</script>';
			echo "InitShareMemory Error";
			exit;
		}
		echo $output[0];
	}
?>