What are common errors related to class not found in PHP when using external libraries like jpgraph?

When using external libraries like jpgraph in PHP, a common error related to class not found can occur if the library is not properly included or autoloaded. To solve this issue, make sure to include the library files correctly in your PHP script or use an autoloader to load the classes automatically when they are needed. 

// Include the jpgraph library files
require_once 'path/to/jpgraph/jpgraph.php';
require_once 'path/to/jpgraph/jpgraph_line.php';

// Your code using jpgraph classes
$graph = new Graph(400, 300);
$lineplot = new LinePlot($data);
$graph->Add($lineplot);
$graph->Stroke();

Keywords

PHP class not found jpgraph external libraries error.

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