exp
    (PHP 3, PHP 4, PHP 5)
exp -- Calculates the exponent of 
eDescription
float 
exp ( float arg )
     Returns e raised to the power of arg.
    
Note: 
      'e' is the base of the natural system of logarithms, or approximately
      2.718282.
     
     
Example 1. exp() example 
<?php echo exp(12) . "\n"; echo exp(5.7); ?>
 |  
 The above example will output:  | 
    
     See also 
     log() and
     pow().