Online PHP editor | output for 5tebZ

@ 2020-05-19T22:55:34Z

<?php
$um = [
        '\\\\' => '\\',
        '\\n' => "[NL]",
    ];

$inputs = [];
for ($i=1;$i<=14;$i++) {
   $inputs[] = ''.str_repeat("\\", $i)."n";
}

foreach ($inputs as $input) {
    $results[] = strtr($input, $um);
}

foreach ($inputs as $key=>$value)
{
    echo str_pad($value, 15, ' ',STR_PAD_LEFT)." =======> ".$results[$key]."\n";
}

Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: \n =======> [NL] \\n =======> \n \\\n =======> \[NL] \\\\n =======> \\n \\\\\n =======> \\[NL] \\\\\\n =======> \\\n \\\\\\\n =======> \\\[NL] \\\\\\\\n =======> \\\\n \\\\\\\\\n =======> \\\\[NL] \\\\\\\\\\n =======> \\\\\n \\\\\\\\\\\n =======> \\\\\[NL] \\\\\\\\\\\\n =======> \\\\\\n \\\\\\\\\\\\\n =======> \\\\\\[NL] \\\\\\\\\\\\\\n =======> \\\\\\\n

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