PHP CS50类代码示例

/**
 * Renders the next profile to view.
 */
function render_next()
{
    //find current viewnum
    $viewNum = CS50::query("SELECT viewNum FROM users WHERE id = ?", $_SESSION["id"]);
    $viewnum = $viewNum[0]["viewNum"];
    //find id of last viable profile
    $last = CS50::query("SELECT MAX(id) FROM users");
    //increment viewnum to next viable profile
    do {
        CS50::query("UPDATE users SET viewNum = viewNum + 1 WHERE id = ?", $_SESSION["id"]);
        $viewnum++;
        if ($viewnum > $last[0]["MAX(id)"]) {
            apologize("You've seen e'rybody!");
            break;
        }
    } while (count(CS50::query("SELECT * FROM users WHERE id = ?", $viewnum)) == 0 || $viewnum == $_SESSION["id"]);
    // render homepage; show new profile.
    render("home.php", ["title" => "home", "profile" => prof_lookup($viewnum)]);
}

<?php

//configuration
require "../includes/config.php";
//query portfolio
$rows = CS50::query("SELECT * FROM portfolios WHERE user_id = ?", $_SESSION["id"]);
//new array to story portfolio contents
$positions = [];
//go through each row
foreach ($rows as $row) {
    //look up symbol from row's stock on Yahoo
    $stock = lookup($row["symbol"]);
    //if look up was successful
    if ($stock !== false) {
        //fill information into array 'positions'
        $positions[] = ["name" => $stock["name"], "symbol" => $row["symbol"], "price_per_stock" => $stock["price"], "shares" => $row["shares"], "total_price" => $stock["price"] * $row["shares"]];
    }
}
//query user's cash
$cash = CS50::query("SELECT cash FROM users WHERE id = ?", $_SESSION["id"]);
//render portfolio
render("portfolio.php", ["positions" => $positions, "title" => "Portfolio", "cash" => $cash]);

<?php

// Mostly original code
// configuration
require "../startbootstrap-business-casual-1.0.4/config.php";
//query username from users and stock from recruiter_userss
$rows = CS50::query("SELECT company, event_date, event_time FROM events WHERE school = ? AND company= ?", $_POST["school"], $_POST["company"]);
if ($rows != false) {
    $new_insertion = CS50::query("INSERT INTO user_events (company, event_time, event_date, user_id) \n                    VALUES (?, ?, ?, ?)", $_POST["company"], $rows[0]["event_time"], $rows[0]["event_date"], $_SESSION["id"]);
    if ($new_insertion !== false) {
        redirect("students.php");
    }
} else {
    apologize("sorry, there is no event for this company");
}

    // validate inputs
    if (empty($_POST["username"])) {
        apologize("You must provide a username.");
    } else {
        if (empty($_POST["password"])) {
            apologize("You must provide a password.");
        } else {
            if (empty($_POST["confirmation"]) || $_POST["password"] != $_POST["confirmation"]) {
                apologize("Those passwords did not match.");
            }
        }
    }
    // try to register user
    $rows = CS50::query("INSERT IGNORE INTO users (username, hash) VALUES(?, ?)", $_POST["username"], password_hash($_POST["password"], PASSWORD_DEFAULT));
    if ($rows !== 1) {
        apologize("That username appears to be taken.");
    }
    // get new user's ID
    $rows = CS50::query("SELECT LAST_INSERT_ID() AS id");
    if (count($rows) !== 1) {
        apologize("Can't find your ID.");
    }
    $id = $rows[0]["id"];
    // log user in
    $_SESSION["id"] = $id;
    // redirect to portfolio
    redirect("/");
} else {
    // else render form
    render("register_form.php", ["title" => "Register"]);
}

 /**
  * Initializes library with JSON file at $path.
  */
 public static function init($path)
 {
     // ensure library is not already initialized
     if (isset(self::$config)) {
         trigger_error("CS50 Library is already initialized", E_USER_ERROR);
     }
     // ensure configuration file exists
     if (!is_file($path)) {
         trigger_error("Could not find {$path}", E_USER_ERROR);
     }
     // read contents of configuration file
     $contents = file_get_contents($path);
     if ($contents === false) {
         trigger_error("Could not read {$path}", E_USER_ERROR);
     }
     // decode contents of configuration file
     $config = json_decode($contents, true);
     if (is_null($config)) {
         trigger_error("Could not decode {$path}", E_USER_ERROR);
     }
     // store configuration
     self::$config = $config;
 }

                }
                // check for negative service
                for ($j = -3; $j <= 3; $j++) {
                    // check if i + j within array.
                    if ($i + $j >= 0 && $i + $j < $terms) {
                        // check up to three words before and after, as well as tracker[$i] itself.
                        if (strpos($tracker[$i + $j], 'service') !== false) {
                            // update service score if location given in comment
                            if ($info[0]["place_name"] != '') {
                                $updatefoodscore = CS50::query("UPDATE locations SET service_score = service_score - 1 WHERE place_name = ?", $info[0]["place_name"]);
                            } else {
                                $updatefoodscore = CS50::query("UPDATE locations SET service_score = service_score - 1 WHERE place_name = ''");
                            }
                        }
                    }
                }
            }
        }
        // mark comment as processed
        $processed = CS50::query("UPDATE comments SET processed = true WHERE id = ?", $info[0]["id"]);
    }
} while (count($info) !== 0);
// retrieve scores for all locations
$scores = CS50::query("SELECT place_name, comments_received, overall_score, food_score, service_score FROM locations");
// array to store scores
$locations = [];
foreach ($scores as $score) {
    $locations[] = ["location" => $score["place_name"], "num_comments" => $score["comments_received"], "overall" => $score["overall_score"], "food" => $score["food_score"], "service" => $score["service_score"]];
}
// render analysis_view
render("analysis_view.php", ["locations" => $locations, "title" => "Analysis"]);

<?php

// include functions in config.php
require __DIR__ . "/../includes/config.php";
// numerically indexed array of places
$places = [];
// Declare variable geo
$geo = $_GET["geo"];
// Query database for the search key to find places that match that and return a variable with that data
$places = CS50::query("SELECT * FROM places WHERE MATCH (country_code, postal_code, place_name, admin_name1, admin_code1) AGAINST (?)", $geo);
// output places as JSON (pretty-printed for debugging convenience)
header("Content-type: application/json");
print json_encode($places, JSON_PRETTY_PRINT);

    $shares = $rows[0]["shares"];
    // sell shares
    $stock = lookup($_POST["symbol"]);
    if ($stock !== false) {
        // update portfolio
        CS50::query("DELETE FROM portfolios WHERE user_id = ? AND symbol = ?", $_SESSION["id"], $_POST["symbol"]);
        // update cash
        CS50::query("UPDATE users SET cash = cash + ? WHERE id = ?", $shares * $stock["price"], $_SESSION["id"]);
        // update history
        CS50::query("INSERT INTO history (user_id, type, symbol, shares, price, datetime)\n                VALUES(?, 'SELL', ?, ?, ?, NOW())", $_SESSION["id"], $stock["symbol"], $shares, $stock["price"]);
        // redirect user
        redirect("/");
    }
} else {
    // get user's portfolio
    $symbols = [];
    $rows = CS50::query("SELECT symbol FROM portfolios WHERE user_id = ? ORDER BY symbol", $_SESSION["id"]);
    if ($rows === false) {
        apologize("Could not find your portfolio.");
    }
    // get symbols in portfolio
    foreach ($rows as $row) {
        $symbols[] = $row["symbol"];
    }
    // render form
    if (count($symbols) > 0) {
        render("sell_form.php", ["symbols" => $symbols, "title" => "Sell"]);
    } else {
        apologize("Nothing to sell.");
    }
}

        apologize("Wasn't able to retreive shares to sell from database");
        return;
    }
    //delete sold stock from database
    $deleted = CS50::query("DELETE FROM portfolio WHERE user_id = ? AND symbol = ?", $_SESSION["id"], $_POST["symbol"]);
    if (!$deleted) {
        apologize("Wasn't able to delete shares from database");
        return;
    }
    //lookup symbol for current price
    $stock = lookup($_POST["symbol"]);
    if (!$stock) {
        apologize("Wasn't able to lookup symbol");
        return;
    }
    //update cash with profit from sold stock
    $updated = CS50::query("UPDATE users SET cash = cash + ? WHERE id = ?", $stock["price"] * $shares[0]["shares"], $_SESSION["id"]);
    if (!$updated) {
        apologize("Wasn't able to update cash in database");
        return;
    }
    //insert this transaction into history
    $updatedHistory = CS50::query("INSERT INTO history (user_id, symbol, transaction, shares, price, time) \n                        VALUES(?, ?, 'sell', 0, ?, NOW())", $_SESSION["id"], strtoupper($_POST["symbol"]), $stock["price"]);
    if (!$updatedHistory) {
        apologize("Wasn't able to update history will sell transaction");
        return;
    }
    redirect("/");
} else {
    render("sell_form.php");
}

<?php

// configuration
require "../includes/config.php";
// if form was submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if ($_POST['interest']) {
        //This is to add an interest to the database
        CS50::query("INSERT INTO `interests` (`user_id`, `interest`) VALUES (?,?)", $_SESSION["id"], $_POST['interest']);
    }
    redirect("index.php");
} else {
    // render form
    redirect("index.php");
}
?>

<!-- original code --> 

<?php 
// configuration
require "../startbootstrap-business-casual-1.0.4/config.php";
// if user reached page via GET (as by clicking a link or via redirect)
if ($_SERVER["REQUEST_METHOD"] == "GET") {
    // else render form
    render("students.html", ["title" => "buy"]);
} else {
    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        // Record Input
        CS50::query("INSERT INTO student_update (FirstName, LastName, Email, University) VALUES (?, ?, ?,?)", $_POST["FirstName"], $_POST["LastName"], $_POST["Email"], $_POST["University"]);
    }
}
redirect("/");

            } else {
                if (empty($_POST["newpassword"])) {
                    apologize("You must produce a password");
                } else {
                    if (empty($_POST["confirmation"])) {
                        apologize("You must produce a password");
                    } else {
                        if ($_POST["newpassword"] != $_POST["confirmation"]) {
                            apologize("Passwords must match");
                        } else {
                            $userstats = CS50::query("SELECT * FROM users WHERE id = ?", $_SESSION["id"]);
                            $username = $userstats[0]["username"];
                            // check username for correctnes
                            if ($username != $_POST["username"]) {
                                apologize("Wrong username");
                            } else {
                                if (!password_verify($_POST["oldpassword"], $userstats[0]["hash"])) {
                                    apologize("Wrong original password");
                                } else {
                                    // update password
                                    CS50::query("UPDATE users SET hash=? where id =?", password_hash($_POST["newpassword"], PASSWORD_DEFAULT), $_SESSION["id"]);
                                    redirect("index.php");
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

    // Store id of article in variable
    $article = $_POST["article_id"];
    // update mySQL
    CS50::query("UPDATE portfolio SET status = 3 WHERE id = ?", $article);
    // set submission destination and subject
    $email_to = "phillyfan362@gmail.com";
    $email_subject = "Crimson Article Submission";
    // Actual article text variable
    $articles = $_POST['articles'];
    // Start of email message
    $email_message = "Form details below.\n\n";
    // Get title of article
    $pieces = CS50::query("SELECT title FROM portfolio WHERE id = ?", $article);
    $piece = $pieces[0]["title"];
    // Get name of comper
    $compers = CS50::query("SELECT name, email FROM users WHERE userid = ?", $_SESSION["id"]);
    $name = $compers[0]["name"];
    $email = $compers[0]["email"];
    // Craft e-mail message body
    $email_message .= "Comper: " . $name . "\r\n";
    $email_message .= "Article Title: " . $piece . "\r\n";
    $email_message .= "Comments: " . $articles . "\r\n";
    $client = new PostmarkClient("211bda55-ecef-447c-ba35-7b2ca54e802f");
    // Send email
    $sendResult = $client->sendEmail("manavkhandelwal@college.harvard.edu", "phillyfan362@gmail.com", "Comper Article Submissions", "{$email_message}");
    // Redirect
    redirect("/");
} else {
    if ($_SERVER["REQUEST_METHOD"] == "GET") {
        redirect("/");
    }

<?php

/**
 * config.php
 *
 * Computer Science 50
 * Veritalks
 *
 * Configures app.
 */
// display errors, warnings, and notices
ini_set("display_errors", true);
error_reporting(E_ALL);
// requirements
require "helpers.php";
// CS50 Library
require "../vendor/library50-php-5/CS50/CS50.php";
CS50::init(__DIR__ . "/../config.json");
// enable sessions
session_start();
// require authentication for certain pages except those listed below
if (!in_array($_SERVER["PHP_SELF"], ["/login.php", "/logout.php", "/register.php", "/main_page.php", "/about_us.php", "/ask_question.php", "/give_advice.php", "/upvote.php", "/user.php", "/academics.php", "/social_scene.php", "/student_life.php", "/real_world.php", "/prospective_students.php", "/financial_aid.php", "/academics_user.php", "/social_scene_user.php", "/student_life_user.php", "/real_world_user.php", "/prospective_students_user.php", "/financial_aid_user.php", "/academics_upvote.php", "/social_scene_upvote.php", "/student_life_upvote.php", "/real_world_upvote.php", "/prospective_students_upvote.php", "/financial_aid_upvote.php"])) {
    if (empty($_SESSION["id"])) {
        redirect("main_page.php");
    }
}

<?php

//configuration
require "../includes/config.php";
//create new array to store history information
$history = CS50::query("SELECT * FROM history WHERE user_id = ?", $_SESSION["id"]);
if (count($history) == 0) {
    apologize("No transactions recorded.");
}
// dump($history);
//render buy form
render("history_form.php", ["title" => "History", "history" => $history]);