JFIF$        dd7 

Viewing File: /home/optimaldigitaltr/public_html/src/vendor/nikic/php-parser/README.md

PHP Parser
==========

[![Coverage Status](https://coveralls.io/repos/github/nikic/PHP-Parser/badge.svg?branch=master)](https://coveralls.io/github/nikic/PHP-Parser?branch=master)

This is a PHP parser written in PHP. Its purpose is to simplify static code analysis and
manipulation.

[**Documentation for version 5.x**][doc_master] (current; for running on PHP >= 7.4; for parsing PHP 7.0 to PHP 8.3, with limited support for parsing PHP 5.x).

[Documentation for version 4.x][doc_4_x] (supported; for running on PHP >= 7.0; for parsing PHP 5.2 to PHP 8.3).

Features
--------

The main features provided by this library are:

 * Parsing PHP 7, and PHP 8 code into an abstract syntax tree (AST).
   * Invalid code can be parsed into a partial AST.
   * The AST contains accurate location information.
 * Dumping the AST in human-readable form.
 * Converting an AST back to PHP code.
   * Formatting can be preserved for partially changed ASTs.
 * Infrastructure to traverse and modify ASTs.
 * Resolution of namespaced names.
 * Evaluation of constant expressions.
 * Builders to simplify AST construction for code generation.
 * Converting an AST into JSON and back.

Quick Start
-----------

Install the library using [composer](https://getcomposer.org):

    php composer.phar require nikic/php-parser

Parse some PHP code into an AST and dump the result in human-readable form:

```php
<?php
use PhpParser\Error;
use PhpParser\NodeDumper;
use PhpParser\ParserFactory;

$code = <<<'CODE'
<?php

function test($foo)
{
    var_dump($foo);
}
CODE;

$parser = (new ParserFactory())->createForNewestSupportedVersion();
try {
    $ast = $parser->parse($code);
} catch (Error $error) {
    echo "Parse error: {$error->getMessage()}\n";
    return;
}

$dumper = new NodeDumper;
echo $dumper->dump($ast) . "\n";
```

This dumps an AST looking something like this:

```
array(
    0: Stmt_Function(
        attrGroups: array(
        )
        byRef: false
        name: Identifier(
            name: test
        )
        params: array(
            0: Param(
                attrGroups: array(
                )
                flags: 0
                type: null
                byRef: false
                variadic: false
                var: Expr_Variable(
                    name: foo
                )
                default: null
            )
        )
        returnType: null
        stmts: array(
            0: Stmt_Expression(
                expr: Expr_FuncCall(
                    name: Name(
                        name: var_dump
                    )
                    args: array(
                        0: Arg(
                            name: null
                            value: Expr_Variable(
                                name: foo
                            )
                            byRef: false
                            unpack: false
                        )
                    )
                )
            )
        )
    )
)
```

Let's traverse the AST and perform some kind of modification. For example, drop all function bodies:

```php
use PhpParser\Node;
use PhpParser\Node\Stmt\Function_;
use PhpParser\NodeTraverser;
use PhpParser\NodeVisitorAbstract;

$traverser = new NodeTraverser();
$traverser->addVisitor(new class extends NodeVisitorAbstract {
    public function enterNode(Node $node) {
        if ($node instanceof Function_) {
            // Clean out the function body
            $node->stmts = [];
        }
    }
});

$ast = $traverser->traverse($ast);
echo $dumper->dump($ast) . "\n";
```

This gives us an AST where the `Function_::$stmts` are empty:

```
array(
    0: Stmt_Function(
        attrGroups: array(
        )
        byRef: false
        name: Identifier(
            name: test
        )
        params: array(
            0: Param(
                attrGroups: array(
                )
                type: null
                byRef: false
                variadic: false
                var: Expr_Variable(
                    name: foo
                )
                default: null
            )
        )
        returnType: null
        stmts: array(
        )
    )
)
```

Finally, we can convert the new AST back to PHP code:

```php
use PhpParser\PrettyPrinter;

$prettyPrinter = new PrettyPrinter\Standard;
echo $prettyPrinter->prettyPrintFile($ast);
```

This gives us our original code, minus the `var_dump()` call inside the function:

```php
<?php

function test($foo)
{
}
```

For a more comprehensive introduction, see the documentation.

Documentation
-------------

 1. [Introduction](doc/0_Introduction.markdown)
 2. [Usage of basic components](doc/2_Usage_of_basic_components.markdown)

Component documentation:

 * [Walking the AST](doc/component/Walking_the_AST.markdown)
   * Node visitors
   * Modifying the AST from a visitor
   * Short-circuiting traversals
   * Interleaved visitors
   * Simple node finding API
   * Parent and sibling references
 * [Name resolution](doc/component/Name_resolution.markdown)
   * Name resolver options
   * Name resolution context
 * [Pretty printing](doc/component/Pretty_printing.markdown)
   * Converting AST back to PHP code
   * Customizing formatting
   * Formatting-preserving code transformations
 * [AST builders](doc/component/AST_builders.markdown)
   * Fluent builders for AST nodes
 * [Lexer](doc/component/Lexer.markdown)
   * Emulation
   * Tokens, positions and attributes
 * [Error handling](doc/component/Error_handling.markdown)
   * Column information for errors
   * Error recovery (parsing of syntactically incorrect code)
 * [Constant expression evaluation](doc/component/Constant_expression_evaluation.markdown)
   * Evaluating constant/property/etc initializers
   * Handling errors and unsupported expressions
 * [JSON representation](doc/component/JSON_representation.markdown)
   * JSON encoding and decoding of ASTs
 * [Performance](doc/component/Performance.markdown)
   * Disabling Xdebug
   * Reusing objects
   * Garbage collection impact
 * [Frequently asked questions](doc/component/FAQ.markdown)
   * Parent and sibling references

 [doc_3_x]: https://github.com/nikic/PHP-Parser/tree/3.x/doc
 [doc_4_x]: https://github.com/nikic/PHP-Parser/tree/4.x/doc
 [doc_master]: https://github.com/nikic/PHP-Parser/tree/master/doc
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg