### Install Spatie Backtrace

Source: https://github.com/spatie/backtrace/blob/main/README.md

Instructions for installing the Spatie Backtrace package using Composer.

```bash
composer require spatie/backtrace
```

--------------------------------

### Custom Argument Reduction with DateTime

Source: https://github.com/spatie/backtrace/blob/main/README.md

Provides an example of a custom argument reducer for `DateTimeInterface` objects, formatting them to 'd/m/y H:i'. It demonstrates how to integrate custom reducers with default ones.

```php
class DateTimeWithOtherFormatArgumentReducer implements \Spatie\Backtrace\Arguments\ArgumentReducer
{
    public function execute($argument): \Spatie\Backtrace\Arguments\ReducedArgumentContract
    {
        if (! $argument instanceof \DateTimeInterface) {
            return \Spatie\Backtrace\Arguments\UnReducedArgument::create();
        }

        return new \Spatie\Backtrace\Arguments\ReducedArgument(
            $argument->format('d/m/y H:i'),
            get_class($argument)
        );
    }
}

$backtrace = Spatie\Backtrace\Backtrace::create()->withArguments()->reduceArguments(
    Spatie\Backtrace\Arguments\ArgumentReducers::default([
        new DateTimeWithOtherFormatArgumentReducer()
    ])
);
```

--------------------------------

### Create and Get Backtrace Frames

Source: https://github.com/spatie/backtrace/blob/main/README.md

Demonstrates how to create a backtrace instance and retrieve an array of Frame objects. Each Frame object provides details about a specific point in the execution stack.

```php
$frames = Spatie\Backtrace\Backtrace::create()->frames(); 

$firstFrame = $frames[0];

$firstFrame->file; // returns the file name
$firstFrame->lineNumber; // returns the line number
$firstFrame->class; // returns the class name
```

--------------------------------

### Get All Backtrace Frames

Source: https://github.com/spatie/backtrace/blob/main/README.md

Retrieves all frames from a Backtrace instance. The result is an array of `Spatie\Backtrace\Frame` objects.

```php
$frames = $backtrace->frames();
```

--------------------------------

### Get Backtrace for a Throwable

Source: https://github.com/spatie/backtrace/blob/main/README.md

Generates a backtrace for a given `Throwable` object. The resulting frames may include arguments if `zend.exception_ignore_args` is disabled before the exception is thrown. Objects are never included as arguments.

```php
$frames = Spatie\Backtrace\Backtrace::createForThrowable($throwable);
```

--------------------------------

### Filter Frames Starting From a Specific Frame

Source: https://github.com/spatie/backtrace/blob/main/README.md

Retrieves frames from a backtrace starting from a frame that matches a given condition. The condition is defined by a callback function that receives a `Frame` object. Frames before the matching frame are excluded.

```php
use Spatie\Backtrace\Backtrace;
use Spatie\Backtrace\Frame;

$frames = Backtrace::create()
    ->startingFromFrame(function (Frame $frame) {
        return $frame->class === MyClass::class;
    })
    ->frames();
```

--------------------------------

### Create Backtrace Instance

Source: https://github.com/spatie/backtrace/blob/main/README.md

Shows the basic usage of creating a new Backtrace instance.

```php
$backtrace = Spatie\Backtrace\Backtrace::create();
```

--------------------------------

### Run Tests

Source: https://github.com/spatie/backtrace/blob/main/README.md

Command to execute the project's test suite.

```bash
composer test
```

--------------------------------

### Set Application Path

Source: https://github.com/spatie/backtrace/blob/main/README.md

Specifies the application's base path to help differentiate between application frames and vendor frames in the backtrace.

```php
$backtrace = Spatie\Backtrace\Backtrace::create()->applicationPath(base_path());
```

--------------------------------

### Collect Arguments and Objects in Frames

Source: https://github.com/spatie/backtrace/blob/main/README.md

Enables the inclusion of function arguments and object context within each frame for more detailed analysis. This can impact performance.

```php
$backtrace = Spatie\Backtrace\Backtrace::create()->withArguments()->withObject();
```

--------------------------------

### Reduce Arguments to String

Source: https://github.com/spatie/backtrace/blob/main/README.md

Configures the backtrace to reduce complex arguments to their string representation for easier viewing. Custom reduction logic can be applied.

```php
$backtrace = Spatie\Backtrace\Backtrace::create()->withArguments()->reduceArguments();
```

--------------------------------

### Trim Application Path from File Names

Source: https://github.com/spatie/backtrace/blob/main/README.md

Removes the application's base path from file names in the backtrace using the `trimFilePaths` method. This requires the `applicationPath` method to be set beforehand. Ensures the `Frame` object has the `trimmedFilePath` property.

```php
$backtrace = Backtrace::create()->applicationPath(base_path())->trimFilePaths());
```

--------------------------------

### Skip Frames Using Offset

Source: https://github.com/spatie/backtrace/blob/main/README.md

Skips a specified number of frames from the beginning of the backtrace. The `offset` method takes an integer representing the number of frames to ignore.

```php
$frames = Spatie\Backtrace\Backtrace::create()
    ->offset(2)
    ->frames();
```

--------------------------------

### Limit the Number of Frames

Source: https://github.com/spatie/backtrace/blob/main/README.md

Restricts the backtrace to a specific number of frames from the beginning. The `limit` method accepts an integer to define the maximum number of frames to retrieve.

```php
$frames = Spatie\Backtrace\Backtrace::create()
    ->limit(2)
    ->frames();
```

--------------------------------

### TestClass Definition

Source: https://github.com/spatie/backtrace/blob/main/tests/__snapshots__/CodeSnippetTest__it_can_get_a_file_code_snippet_as_a_string__1.txt

Defines the `TestClass` used for testing the Spatie Backtrace functionality. It includes properties to control the surrounding lines and snippet line count for backtrace generation.

```php
namespace Spatie\Backtrace\Tests\TestClasses;

use RuntimeException;

class TestClass
{
    /** @var int */
    protected $surroundingLine = 1;

    /** @var int */
    protected $snippetLineCount = 9;

    public function surroundingLine(int $surroundingLine): self
    {
        $this->surroundingLine = $surroundingLine;
        return $this;
    }

    public function snippetLineCount(int $snippetLineCount): self
    {
        $this->snippetLineCount = $snippetLineCount;
        return $this;
    }

    public function getSurroundingLine(): int
    {
        return $this->surroundingLine;
    }

    public function getSnippetLineCount(): int
    {
        return $this->snippetLineCount;
    }

    public function throwException(): void
    {
        throw new RuntimeException('Something went wrong');
    }
}
```

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