PHPで作った便利な自作関数集です

<?php
function h($str) {
  return htmlspecialchars($str, ENT_QUOTES|ENT_HTML5, "UTF-8");
}

function _h( $inputs ) {
  if ( is_array( $inputs ) ) {
    $_input = array();
    foreach ( $inputs as $key => $val ) {
      if ( is_array( $val ) ) {
        $key            = htmlspecialchars( $key, ENT_QUOTES, 'UTF-8' );
        $_input[ $key ] = _h( $val );
      } else {
        $key            = htmlspecialchars( $key, ENT_QUOTES, 'UTF-8' );
        $_input[ $key ] = htmlspecialchars( $val, ENT_QUOTES, 'UTF-8' );
      }
    }
    return $_input;
  } else {
    return htmlspecialchars( $inputs, ENT_QUOTES, 'UTF-8' );
  }
}

function insertData($host, $db_name, $db_user, $db_pass, $db_tablename, $insert_data) {
	try {
		$conn = new PDO("mysql:host=$host;dbname=$db_name", $db_user, $db_pass);
		$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

		$keys = array_keys($insert_data);
		$values = array_values($insert_data);
		$num_values = count($values);

		$placeholders = implode(',', array_fill(0, $num_values, '?'));

		$stmt = $conn->prepare("INSERT INTO $db_tablename (" . implode(',', $keys) . ") VALUES ($placeholders)");
		$stmt->execute($values);

		$conn = null;
		return true;
	} catch(PDOException $e) {
		return "Error deleting record: " . $e->getMessage();
	}
}

function fetch_mysql_data($host, $dbname, $db_user, $password, $table_name) {
    // MySQLへの接続
    $pdo = new PDO("mysql:host={$host};dbname={$dbname};charset=utf8", $db_user, $password);
    // エラー時の例外処理
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    
    // データの取得
    $stmt = $pdo->prepare("SELECT * FROM `{$table_name}`");
    $stmt->execute();
    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    return $result;
}

function fetch_mysql_data_where($host, $dbname, $db_user, $password, $table_name, $where_sentence) {
    // MySQLへの接続
    $pdo = new PDO("mysql:host={$host};dbname={$dbname};charset=utf8", $db_user, $password);
    // エラー時の例外処理
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    
    // データの取得
    $stmt = $pdo->prepare("SELECT * FROM `{$table_name}` {$where_sentence};");
    $stmt->execute();
    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    return $result;
}

function deleteRecord($host, $dbname, $db_user, $password, $table_name, $delete_id) {
    try {
        $dsn = "mysql:host=$host;dbname=$dbname";
        $pdo = new PDO($dsn, $db_user, $password);

        $stmt = $pdo->prepare("DELETE FROM $table_name WHERE id = ?");
        $stmt->execute([$delete_id]);

        if ($stmt->rowCount() == 1) {
            return "Record deleted successfully";
        } else {
            return "Record not found";
        }
    } catch (PDOException $e) {
        return "Error deleting record: " . $e->getMessage();
    }

    $pdo = null;
}
?>

詳細は後程記入