PHP code example of microsoft / tolerant-php-parser

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

microsoft / tolerant-php-parser example snippets

// Autoload  "/vendor/autoload.php";

use Microsoft\PhpParser\{DiagnosticsProvider, Node, Parser, PositionUtilities};

// Instantiate new parser instance
$parser = new Parser();

// Return and print an AST from string contents
$astNode = $parser->parseSourceFile(' /* comment */ echo "hi!"');
var_dump($astNode);

// Gets and prints errors from AST Node. The parser handles errors gracefully,
// so it can be used in IDE usage scenarios (where code is often incomplete).
$errors = DiagnosticsProvider::getDiagnostics($astNode);
var_dump($errors);

// Traverse all Node descendants of $astNode
foreach ($astNode->getDescendantNodes() as $descendant) {
    if ($descendant instanceof Node\StringLiteral) {
        // Print the Node text (without whitespace or comments)
        var_dump($descendant->getText());

        // All Nodes link back to their parents, so it's easy to navigate the tree.
        $grandParent = $descendant->getParent()->getParent();
        var_dump($grandParent->getNodeKindName());

        // The AST is fully-representative, and round-trippable to the original source.
        // This enables consumers to build reliable formatting and refactoring tools.
        var_dump($grandParent->getLeadingCommentAndWhitespaceText());
    }

    // In addition to retrieving all children or descendants of a Node,
    // Nodes expose properties specific to the Node type.
    if ($descendant instanceof Node\Expression\EchoExpression) {
        $echoKeywordStartPosition = $descendant->echoKeyword->getStartPosition();
        // To cut down on memory consumption, positions are represented as a single integer
        // index into the document, but their line and character positions are easily retrieved.
        $lineCharacterPosition = PositionUtilities::getLineCharacterPositionFromPosition(
            $echoKeywordStartPosition,
            $descendant->getFileContents()
        );
        echo "line: $lineCharacterPosition->line, character: $lineCharacterPosition->character";
    }
}