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<?php $arr = []; $range = range(1,10); foreach($range as $x) $arr[] = log10($x); echo '<pre>'; print_r($arr); echo '</pre>';
Output for git.master, git.master_jit, rfc.property-hooks
<pre>Array ( [0] => 0 [1] => 0.30102999566398 [2] => 0.47712125471966 [3] => 0.60205999132796 [4] => 0.69897000433602 [5] => 0.77815125038364 [6] => 0.84509804001426 [7] => 0.90308998699194 [8] => 0.95424250943932 [9] => 1 ) </pre>

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