In PHP 5, is there a limit to the number of keys a single-dimensional array can have?
If so, can this be circumvented by a multi-dimensional array, or does it have the same limit as a single-dimensional?
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Answer it!
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. According to the manual, "It takes as parameters any number of comma-separated key => value pairs." (my emphasis) That tells me that the limit is dependent how much RAM you have, but I can't find confirmation of that.
. PS: count() returns an integer.
. According to the manual, "The size of an integer is platform-dependent, although a maximum value of about two billion is the usual value (that's 32 bits signed). 64-bit platforms usually have a maximum value of about 9E18. PHP does not support unsigned integer s. Integer size can be determined using the constant PHP_INT_SIZE, and maximum value using the constant PHP_INT_MAX since PHP 4.4.0 and PHP 5.0.5. "
. According to the manual, "The size of an integer is platform-dependent, although a maximum value of about two billion is the usual value (that's 32 bits signed). 64-bit platforms usually have a maximum value of about 9E18. PHP does not support unsigned integer s. Integer size can be determined using the constant PHP_INT_SIZE, and maximum value using the constant PHP_INT_MAX since PHP 4.4.0 and PHP 5.0.5. "
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