### Get Triggered Deprecations

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Retrieves all triggered deprecations and their individual counts when tracking is enabled. This provides insight into how many times each deprecation message has been triggered.

```php
$deprecations = \Doctrine\Deprecations\Deprecation::getTriggeredDeprecations();

foreach ($deprecations as $identifier => $count) {
    echo $identifier . " was triggered " . $count . " times\n";
}
```

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

### Enable Deprecations with PSR3 Logger

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Enables Doctrine deprecations to be sent to a PSR3 logger. This is the recommended approach for libraries.

```php
\Doctrine\Deprecations\Deprecation::enableWithPsrLogger($logger);
```

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

### PHPUnit Configuration for Deprecations

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Configures PHPUnit to display deprecations triggered during test execution and to fail the test suite if deprecations occur. It also sets an environment variable to ensure native PHP deprecations are used and ignores deprecation suppression in source code.

```xml
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
         colors="true"
         bootstrap="vendor/autoload.php"
         displayDetailsOnTestsThatTriggerDeprecations="true"
         failOnDeprecation="true"
    >
    <!-- one attribute to display the deprecations, the other to fail the test suite -->

    <php>
        <!-- ensures native PHP deprecations are used -->
        <server name="DOCTRINE_DEPRECATIONS" value="trigger"/>
    </php>

    <!-- ensures the @ operator in @trigger_error is ignored -->
    <source ignoreSuppressionOfDeprecations="true">
        <include>
            <directory>src</directory>
        </include>
    </source>
</phpunit>
```

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

### PHPUnit Configuration with Custom Bootstrap

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Updates the PHPUnit configuration to use a custom bootstrap file (`tests/bootstrap.php`) which can be used to configure deprecation handling, such as disabling deduplication.

```xml
<phpunit …
        bootstrap="tests/bootstrap.php"
        …
    >
    …
</phpunit>
```

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

### Enable Deprecation Tracking

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Enables deprecation tracking without logging or calling trigger_error. This mode can be combined with other modes. It can also be controlled via the DOCTRINE_DEPRECATIONS environment variable set to 'track'.

```php
\Doctrine\Deprecations\Deprecation::enableTrackingDeprecations();
```

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

### Disable Deprecation Deduplication in PHPUnit Bootstrap

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

A PHP bootstrap file for PHPUnit that disables the deduplication of deprecations. This ensures that every deprecation is reported, even if it occurs multiple times. The file requires the autoloader and then calls `Deprecation::withoutDeduplication()`.

```php
// tests/bootstrap.php
<?php

declare(strict_types=1);

require dirname(__DIR__) . '/vendor/autoload.php';

use Doctrine\Deprecations\Deprecation;

Deprecation::withoutDeduplication();

```

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

### Ignore Deprecations from a Package

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Disables all deprecations originating from a specific package, identified by its vendor/package name.

```php
\Doctrine\Deprecations\Deprecation::ignorePackage("doctrine/orm");
```

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

### PHPUnit Test - Expect Deprecation

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Uses the VerifyDeprecations trait to assert that a specific deprecation message, identified by its URL, is triggered during a test.

```php
use Doctrine\Deprecations\PHPUnit\VerifyDeprecations;

class MyTest extends TestCase
{
    use VerifyDeprecations;

    public function testSomethingDeprecation()
    {
        $this->expectDeprecationWithIdentifier('https://github.com/doctrine/orm/issue/1234');

        triggerTheCodeWithDeprecation();
    }
}
```

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

### Disable Deprecation Tracking

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Disables all forms of deprecation tracking, logging, and triggering. This effectively turns off the deprecation layer.

```php
\Doctrine\Deprecations\Deprecation::disable();
```

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

### Trigger Deprecation (Producer)

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Unconditionally triggers a deprecation message. This method is intended for library producers to signal deprecations to consumers. Variable arguments are used with sprintf on the message.

```php
\Doctrine\Deprecations\Deprecation::trigger(
    "doctrine/orm",
    "https://link/to/deprecations-description",
    "message"
);
```

```php
\Doctrine\Deprecations\Deprecation::trigger(
    "doctrine/orm",
    "https://github.com/doctrine/orm/issue/1234",
    "message %s %d",
    "foo",
    1234
);
```

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

### PHPUnit Test - Expect No Deprecation

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Uses the VerifyDeprecations trait to assert that a specific deprecation message is NOT triggered during a test. This is useful for verifying that fixes have been applied.

```php
use Doctrine\Deprecations\PHPUnit\VerifyDeprecations;

class MyTest extends TestCase
{
    use VerifyDeprecations;

    public function testSomethingDeprecationFixed()
    {
        $this->expectNoDeprecationWithIdentifier('https://github.com/doctrine/orm/issue/1234');

        triggerTheCodeWithoutDeprecation();
    }
}
```

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

### Enable Deprecations with trigger_error

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Enables Doctrine deprecations to be sent as @trigger_error(E_USER_DEPRECATED) messages. This can also be controlled via the DOCTRINE_DEPRECATIONS environment variable set to 'trigger'.

```php
\Doctrine\Deprecations\Deprecation::enableWithTriggerError();
```

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

### Ignore Specific Deprecations

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Disables triggering of specific deprecation messages identified by a URL. This is useful for suppressing known deprecations.

```php
\Doctrine\Deprecations\Deprecation::ignoreDeprecations("https://link/to/deprecations-description-identifier");
```

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

### Trigger Deprecation If Called From Outside (Producer)

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Triggers a deprecation message only when the call originates from outside the current package. This prevents a library from deprecating its own internal calls.

```php
\Doctrine\Deprecations\Deprecation::triggerIfCalledFromOutside(
    "doctrine/orm",
    "https://link/to/deprecations-description",
    "message"
);
```

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

### Disable Deprecation Deduplication

Source: https://github.com/doctrine/deprecations/blob/1.1.x/README.md

Disables the deduplication of deprecation messages. This is useful in testing environments like PHPUnit where multiple instances of the same deprecation might be intentionally triggered.

```php
\Doctrine\Deprecations\Deprecation::withoutDeduplication();
```

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