Note: preg_match(), which uses a Perl-compatible regular expression syntax, is often a faster alternative to ereg().
string for matches to the regular
expression given in
pattern in a case-sensitive
If matches are found for parenthesized substrings of
pattern and the function is called with
the third argument
regs, the matches will
be stored in the elements of the array
regs. $regs will contain the substring
which starts at the first left parenthesis; $regs will contain
the substring starting at the second, and so on. $regs will
contain a copy of the complete string matched.
Note: Up to (and including) PHP 4.1.0
$regswill be filled with exactly ten elements, even though more or fewer than ten parenthesized substrings may actually have matched. This has no effect on ereg()'s ability to match more substrings. If no matches are found, $regs will not be altered by ereg().
Returns the length of the matched string if a match for
string, or FALSE if no matches
were found or an error occurred.
If the optional parameter
regs was not passed or
the length of the matched string is 0, this function returns 1.
The following code snippet takes a date in ISO format (YYYY-MM-DD) and prints it in DD.MM.YYYY format: