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[Contracts] [PHPUnitBridge] Document the "symfony/deprecation-contracts" #14669

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Dec 8, 2020
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[Contracts] [PHPUnitBridge] Document the "symfony/deprecation-contracts" #14669

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3 changes: 3 additions & 0 deletions components/phpunit_bridge.rst
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Expand Up @@ -165,6 +165,9 @@ Deprecation notices can be triggered by using::

@trigger_error('Your deprecation message', E_USER_DEPRECATED);

You can also require the ``symfony/deprecation-contracts`` package that provides
a global ``trigger_deprecation()`` function for this usage.

Without the `@-silencing operator`_, users would need to opt-out from deprecation
notices. Silencing by default swaps this behavior and allows users to opt-in
when they are ready to cope with them (by adding a custom error handler like the
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