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| author | Sudipto Mallick <> | 2024-01-02 03:38:10 +0000 |
|---|---|---|
| committer | Sudipto Mallick <> | 2024-01-02 03:38:10 +0000 |
| commit | 7451edff7692e86c5238ff7bc6659825e242a84e (patch) | |
| tree | 830fe25caf403869fe77df83bc44822ea6f5f11d /mysql-php/code/a2.php | |
| parent | a70e0a59817ce06a3dd23b3750ae16ee6660deaf (diff) | |
| download | zadania-7451edff7692e86c5238ff7bc6659825e242a84e.tar.gz | |
Quick backup, need to be rewritten
Diffstat (limited to 'mysql-php/code/a2.php')
| -rw-r--r-- | mysql-php/code/a2.php | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/mysql-php/code/a2.php b/mysql-php/code/a2.php new file mode 100644 index 0000000..c03789f --- /dev/null +++ b/mysql-php/code/a2.php @@ -0,0 +1,78 @@ +<?php +declare(strict_types=1); +error_reporting(E_ALL); +// student: name roll city email date_of_birth +function connect_to_database() { + mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); + if (!($dbh = mysqli_connect('localhost', 'root', ''))) + display_failure('Could not connect to the database: ' . mysqli_connect_error($dbh)); + mysqli_set_charset($dbh, 'utf8mb4'); + if (!mysqli_query($dbh, 'CREATE DATABASE IF NOT EXISTS STUDENTS_DB')) + display_failure('Could not create database: ' . mysqli_error($dbh)); + mysqli_select_db($dbh, 'STUDENTS_DB'); + if (!mysqli_query($dbh, 'CREATE TABLE IF NOT EXISTS STUDENT ( + ROLL INT(20) PRIMARY KEY, + NAME VARCHAR(255), + CITY VARCHAR(255), + EMAIL VARCHAR(255), + DATE_OF_BIRTH DATE + )')) + display_failure('Could not create table: ' . mysqli_error($dbh)); + return $dbh; +} + +function display_failure($reason) { + html_prologue('Operation failure'); + ?> +<h2>Operation failed</h2> +<p>Reason: <?php echo $reason; ?></p> +<?php + die(); +} + +function html_prologue($title) { +?><!doctype html> +<meta charset="utf-8"> +<title><?php echo $title; ?></title> +<style> +body { font-family: sans-serif; font-size: 1.3rem; } +h1 { font-size: 2rem; font-weight: 500; } +table, tr, th, td { border-collapse: collapse; border: 1px solid black; } +th, td { padding: 5px; } +</style> +<?php +} + +function show_table($dbh) { + if (!($result = mysqli_query($dbh, 'SELECT * FROM STUDENT + WHERE YEAR(DATE_OF_BIRTH) BETWEEN 2000 AND 2005'))) + display_failure('Could not perform query: ' . mysqli_error($dbh)); + html_prologue('Students\' details'); + ?> +<h2>Students' details</h2> +<p>The students who were born in years 2000 to 2005, inclusive.</p> +<p><?php echo mysqli_num_rows($result); ?> record(s) found.</p> +<table> + <tr> + <th>Roll No.</th> + <th>Name</th> + <th>E-mail</th> + <th>City</th> + <th>Date of birth</th> + </tr><?php + while ($row = mysqli_fetch_assoc($result)) { ?> + <tr><td> + <?php echo implode('</td><td>', array_map('htmlspecialchars', [ + $row['ROLL'], $row['NAME'], $row['EMAIL'], $row['CITY'], + $row['DATE_OF_BIRTH'] + ])); ?> + </td></tr> + <?php + } ?> +</table> +<?php +} + +$dbh = connect_to_database(); +show_table($dbh); +mysqli_close($dbh); |