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<?
 
for($n=8;$n;$r[]=$n--)echo str_replace($r," ","1234567887654321\n");
 
?>

Success #stdin #stdout #stderr 0.01s 20520KB

stdin

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Standard input is empty

stdout

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1234567887654321
1234567  7654321
123456    654321
12345      54321
1234        4321
123          321
12            21
1              1

stderr

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PHP Notice:  Undefined variable: r in /home/rDzpGq/prog.php on line 3

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language:

PHP (php 7.3.5)

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visibility:

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