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\$error\_reporting {#variable.error.reporting}
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==================
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When this value is set to a non-null-value it\'s value is used as php\'s
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[`error_reporting`](https://www.php.net/error_reporting) level inside of
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[`display()`](#api.display) and [`fetch()`](#api.fetch).
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Smarty 3.1.2 introduced the
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[`muteExpectedErrors()`](#api.mute.expected.errors) function. Calling
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`Smarty::muteExpectedErrors();` after setting up custom error handling
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will ensure that warnings and notices (deliberately) produced by Smarty
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will not be passed to other custom error handlers. If your error logs
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are filling up with warnings regarding `filemtime()` or `unlink()`
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calls, please enable Smarty\'s error muting.
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See also [debugging](#chapter.debugging.console) and
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[troubleshooting](#troubleshooting).
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