hexdec
(PHP 3, PHP 4 )
hexdec -- Hexadecimal to decimal
Description
int hexdec ( string hex_string)
Returns the decimal equivalent of the hexadecimal number
represented by the hex_string argument. hexdec() converts
a hexadecimal string to a decimal number. The largest number
that can be converted is 7fffffff or 2147483647 in decimal.
hexdec() will ignore any non-hexadecimal characters it
encounters. Example 1. hexdec() example
<?php
var_dump(hexdec("See"));
var_dump(hexdec("ee"));
// both print "int(238)"
var_dump(hexdec("that")); // print "int(10)"
var_dump(hexdec("a0")); // print "int(160)"
?>
See also dechex(), bindec(), octdec() and base_convert().
hypot
(PHP 4 >= 4.1.0)
hypot -- Returns sqrt(num1*num1 + num2*num2)
Description
float hypot ( float num1, float num2)
Warning
This function is EXPERIMENTAL. The behaviour of this function,
the name of this function, and anything else documented
about this function may change without notice in a future
release of PHP. Use this function at your own risk.
Warning
This function is currently not documented; only the argument
list is available.
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