52 lines
2.3 KiB
PHP
52 lines
2.3 KiB
PHP
<?php
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$hostname = "localhost";
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$database = "doctor_appointment_system";
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$username = "root";
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$password = "";
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$port = 3306;
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try {
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$mysqli = new mysqli($hostname, $username, $password, $database, $port);
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if ($mysqli->connect_error) { die("Connection failed: " . $mysqli->connect_error); }
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echo "=== Database Connection Successful ===" . PHP_EOL;
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echo "Database: $database" . PHP_EOL . PHP_EOL;
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$checkQuery = "SELECT COUNT(*) as count FROM users WHERE formatted_user_id LIKE 'PAT%'";
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$result = $mysqli->query($checkQuery);
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$row = $result->fetch_assoc();
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$countBefore = $row["count"];
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echo "Records with 'PAT' prefix BEFORE update: " . $countBefore . PHP_EOL;
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if ($countBefore > 0) {
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echo PHP_EOL . "Sample records before update:" . PHP_EOL;
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$sampleQuery = "SELECT id, formatted_user_id FROM users WHERE formatted_user_id LIKE 'PAT%' LIMIT 5";
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$result = $mysqli->query($sampleQuery);
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while ($row = $result->fetch_assoc()) {
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echo " - " . $row["formatted_user_id"] . PHP_EOL;
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}
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}
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echo PHP_EOL . "=== Executing UPDATE Query ===" . PHP_EOL;
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$updateQuery = "UPDATE users SET formatted_user_id = REPLACE(formatted_user_id, 'PAT', 'PT') WHERE formatted_user_id LIKE 'PAT%'";
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if ($mysqli->query($updateQuery)) {
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$affectedRows = $mysqli->affected_rows;
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echo "UPDATE executed successfully!" . PHP_EOL;
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echo "Rows affected: $affectedRows" . PHP_EOL;
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$checkAfterQuery = "SELECT COUNT(*) as count FROM users WHERE formatted_user_id LIKE 'PAT%'";
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$result = $mysqli->query($checkAfterQuery);
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$row = $result->fetch_assoc();
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$countAfter = $row["count"];
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echo PHP_EOL . "Records with 'PAT' prefix AFTER update: " . $countAfter . PHP_EOL;
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echo PHP_EOL . "Sample records after update:" . PHP_EOL;
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$sampleAfterQuery = "SELECT id, formatted_user_id FROM users WHERE formatted_user_id LIKE 'PT%' LIMIT 5";
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$result = $mysqli->query($sampleAfterQuery);
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while ($row = $result->fetch_assoc()) {
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echo " - " . $row["formatted_user_id"] . PHP_EOL;
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}
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echo PHP_EOL . "=== UPDATE COMPLETED SUCCESSFULLY ===" . PHP_EOL;
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} else {
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echo "Error: " . $mysqli->error . PHP_EOL;
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}
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$mysqli->close();
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} catch (Exception $e) {
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echo "Exception: " . $e->getMessage() . PHP_EOL;
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}
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?>
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