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Top Forums Programming CHAR Array - stuffed with values - with more size than it holds Post 302167537 by jim mcnamara on Thursday 14th of February 2008 05:31:45 PM
Old 02-14-2008
*I understood from the beginning. I said they are not truly contiguous in memory.
Why? they are 20 chars long. 20 % 8 == 4 There are 4 bytes between them. Very probably.

The first position in memory after str1 (str1["21"] which does not really exist) is very likely NOT str2[0].

Why only very likely NOT true?

How things are positioned in memory is implementation dependent. So I cannot guarantee where str1 and str2 live in memory because you may be running a non-standard compiler or running in a special unix environment.

In the environments I do know they will not be back-to-front in memory. There will be a gap. Why don't you just modify my code and see?
 

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ARRAY_COMBINE(3)							 1							  ARRAY_COMBINE(3)

array_combine - Creates an array by using one array for keys and another for its values

SYNOPSIS
array array_combine (array $keys, array $values) DESCRIPTION
Creates an array by using the values from the $keys array as keys and the values from the $values array as the corresponding values. PARAMETERS
o $keys - Array of keys to be used. Illegal values for key will be converted to string. o $values - Array of values to be used RETURN VALUES
Returns the combined array, FALSE if the number of elements for each array isn't equal. ERRORS
/EXCEPTIONS Throws E_WARNING if the number of elements in $keys and $values does not match. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.4.0 | | | | | | | Previous versions issued E_WARNING and returned | | | FALSE for empty arrays. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 A simple array_combine(3) example <?php $a = array('green', 'red', 'yellow'); $b = array('avocado', 'apple', 'banana'); $c = array_combine($a, $b); print_r($c); ?> The above example will output: Array ( [green] => avocado [red] => apple [yellow] => banana ) SEE ALSO
array_merge(3), array_walk(3), array_values(3). PHP Documentation Group ARRAY_COMBINE(3)
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