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run code in 300+ PHP versions simultaneously
<?php ini_set('precision', "16"); $x = 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1; var_dump( ini_get('precision'), $x, (string)$x );
Output for git.master, git.master_jit, rfc.property-hooks
string(2) "16" float(0.9999999999999999) string(18) "0.9999999999999999"

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