(PHP 4, PHP 5, PHP 7)
exp — ���� e ��ָ��
$arg
) : float
���� e �� arg �η�ֵ��
Note:
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e' ��Ϊ��Ȼ�����ĵ� 2.718282.
argҪ����IJ���
'e' raised to the power of arg
Example #1 exp() ����
<?php
echo exp(12) . "\n";
echo exp(5.7);
?>
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1.6275E+005 298.87