If define an array $things with values for $things[1] and $things[2], is $things[0] undefined i.e. are the numner of elements in the array 2 or 3?

cheers

Paul

Two. In other words, arrays are sparse and memory is not eaten up allowing for elements that don't (ye) exist.   Here's a sample program, and results, as proof ...

Code:

$ cat phpdemo #!/usr/bin/php -q Sample program to show the PHP arrays can be "sparse" <?php $thing[3] = 4; $thing[4] = "more"; $size = count($thing); print "There are $size elements\n"; ?> We have defined two elements called 3 and 4 in an array, and our program reports a count of 2 elements $ ./phpdemo Sample program to show the PHP arrays can be "sparse" There are 2 elements We have defined two elements called 3 and 4 in an array, and our program reports a count of 2 elements $

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