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@ 2020-06-01T15:08:07Z

<?php

$source = [ <<<'EOD'
\n
EOD
, <<<'EOD'
\\n
EOD
, <<<'EOD'
\\\n
EOD
];

var_dump(preg_replace('~\\\\.(*SKIP)(?<=n)~', "\n", $source));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

101.83 ms | 1494 KiB | 5 Q