   #PHP Manual Mathematical Functions Mathematical Functions acos

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                                      abs

   (PHP 3, PHP 4 )
   abs -- Absolute value

Description

   number abs ( mixed number)

   Returns the absolute value of number. If the argument number is of
   type float, the return type is also float, otherwise it is integer (as
   float usually has a bigger value range than integer).

   Example 1. abs() example
   <?php
   $abs = abs(-4.2); // $abs = 4.2; (double/float)
   $abs2 = abs(5);   // $abs2 = 5; (integer)
   $abs3 = abs(-5);  // $abs3 = 5; (integer)
   ?>
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