Error: Class not found - class

Question

I'm fairly new to using class libraries in PHP. I have the PHPSQLParser from https://code.google.com/archive/p/php-sql-parser/
My code looks like this:
myProgram.php
<?php
header('Content-Type: application/json');
require_once($_SERVER['DOCUMENT_ROOT'] . '/../PHP/includes/PHP-SQL-Parser/src/PHPSQLParser/PHPSQLParser.php');
$sql='SELECT description FROM model WHERE ModelId = "79876"';
$parser = new PHPSQLParser($sql);
echo json_encode($parser->parsed);
?>
I'm getting the following error:
PHP Fatal error: class 'PHPSQLParser' not found in myProgram.php on line 5
I know the require_once() is working because (1) I'm not getting an error from it, and (2) I temporarily inserted (and have since removed) an echo "hello"; in the class file and it did echo the phrase.
I'm not sure how to resolve the error. What should I be looking for here?
The class file for PHPSQLParser is as below:
PHPSQLParser.php
<?php
/**
* PHPSQLParser.php
*
* A pure PHP SQL (non validating) parser w/ focus on MySQL dialect of SQL
*
* PHP version 5
*
* LICENSE:
* Copyright (c) 2010-2014 Justin Swanhart and André Rothe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* #author André Rothe <andre.rothe#phosco.info>
* #copyright 2010-2014 Justin Swanhart and André Rothe
* #license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
* #version SVN: $Id: PHPSQLParser.php 1327 2014-04-15 11:17:49Z phosco#gmx.de $
*/
namespace PHPSQLParser;
use PHPSQLParser\positions\PositionCalculator;
use PHPSQLParser\processors\DefaultProcessor;
use PHPSQLParser\utils\PHPSQLParserConstants;
require_once dirname(__FILE__) . '/positions/PositionCalculator.php';
require_once dirname(__FILE__) . '/processors/DefaultProcessor.php';
require_once dirname(__FILE__) . '/utils/PHPSQLParserConstants.php';
/**
* This class implements the parser functionality.
*
* #author Justin Swanhart <greenlion#gmail.com>
* #author André Rothe <arothe#phosco.info>
* #license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
*/
class PHPSQLParser {
public $parsed;
/**
* Constructor. It simply calls the parse() function.
* Use the public variable $parsed to get the output.
*
* #param String $sql The SQL statement.
* #param boolean $calcPositions True, if the output should contain [position], false otherwise.
*/
public function __construct($sql = false, $calcPositions = false) {
if ($sql) {
$this->parse($sql, $calcPositions);
}
}
/**
* It parses the given SQL statement and generates a detailled
* output array for every part of the statement. The method can
* also generate [position] fields within the output, which hold
* the character position for every statement part. The calculation
* of the positions needs some time, if you don't need positions in
* your application, set the parameter to false.
*
* #param String $sql The SQL statement.
* #param boolean $calcPositions True, if the output should contain [position], false otherwise.
*
* #return array An associative array with all meta information about the SQL statement.
*/
public function parse($sql, $calcPositions = false) {
$processor = new DefaultProcessor();
$queries = $processor->process($sql);
// calc the positions of some important tokens
if ($calcPositions) {
$calculator = new PositionCalculator();
$queries = $calculator->setPositionsWithinSQL($sql, $queries);
}
// store the parsed queries
$this->parsed = $queries;
return $this->parsed;
}
/**
* Add a custom function to the parser. no return value
*
* #param String $token The name of the function to add
*
* #return null
*/
public function addCustomFunction($token) {
PHPSQLParserConstants::getInstance()->addCustomFunction($token);
}
/**
* Remove a custom function from the parser. no return value
*
* #param String $token The name of the function to remove
*
* #return null
*/
public function removeCustomFunction($token) {
PHPSQLParserConstants::getInstance()->removeCustomFunction($token);
}
/**
* Returns the list of custom functions
*
* #return array Returns an array of all custom functions
*/
public function getCustomFunctions() {
return PHPSQLParserConstants::getInstance()->getCustomFunctions();
}
}
?>

Answer 1

The class is within a namespace - use
$parser = new PHPSQLParser\PHPSQLParser($sql);
find out more at the manual here: http://php.net/manual/en/language.namespaces.php