Programming PHP

each
array each(array array)
Creates an array containing the keys and values of the element currently pointed at by the
array’s internal pointer. The array contains four elements: elements with the keys 0 and key
from the element contain the key of the element, and elements with the keys 1 and value
contain the value of the element.
If the internal pointer of the array points beyond the end of the array, each( ) returns false.
echo
void echo string string[, string string2[, string stringN ...]]
Outputs the given strings. echo is a language construct, and enclosing the parameters in
parentheses is optional, unless multiple parameters are given—in this case, you cannot use
parentheses.
empty
bool empty(mixed value)
Returns true if value is either 0 or not set, and false otherwise.
end
mixed end(array array)
Advances the array’s internal pointer to the last element and returns the element’s value.
ereg
int ereg(string pattern,string string[, array matches])
Searches string for the regular expression pattern. If given, the array matches is filled with
the subpattern matches. Returns true if the pattern matched in string and false if not. See
Chapter 4 for more information on using regular expressions.
ereg_replace
string ereg_replace(string pattern,string replace, string string)
Searches for all occurrences of the regular expression pattern in string, replaces them with
replace, and returns the result.
394 | Appendix A: Function Reference
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