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Math Functions
PHP Manual

log10

(PHP 4, PHP 5)

log10 — Base-10 logarithm

Description

float log10 ( float $arg )

Returns the base-10 logarithm of arg.

Parameters

arg

The argument to process

Return Values

The base-10 logarithm of arg

See Also

  • log() - Natural logarithm

Math Functions
PHP Manual
User Contributed Notes
log10
smalladi at lexgen dot com
20-Nov-2001 11:47
Note that log of a negative or undefined number returns -Infinity.
 

 
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