ereg

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• preg_match()Descriptionint ereg ( string $pattern , string $string [, array &$regs ] ) Searches a string for matches to the regular expression given in pattern in a case-sensitive way. Parameters pattern Case sensitive regular expression. string The input string. regs 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. $regs1 will contain the substring which starts at the first left parenthesis; $regs2 will contain the substring starting at the second, and so on. $regs0 will contain a copy of the complete string matched. Return Values Returns the length of the matched string if a match for pattern was found in 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. ChangelogVersionDescription4.1.0Up to (and including) PHP 4.1.0 $regs will 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, $regs will not be altered by ereg().ExamplesExample #1 ereg() example? The following code snippet takes a date in ISO format (YYYY-MM-DD) and prints it in DD.MM.YYYY format: ?<?php if?(ereg?("([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})",?$date,?$regs))?{ ????echo?"$regs[3].$regs[2].$regs[1]"; }?else?{ ????echo?"Invalid?date?format:?$date"; } ?>See Also

• eregi() - Case insensitive regular expression match

• ereg_replace() - Replace regular expression

• eregi_replace() - Replace regular expression case insensitive

• preg_match() - Perform a regular expression match

• strpos() - Find the position of the first occurrence of a substring in a string

• strstr() - Find the first occurrence of a string

• quotemeta() - Quote meta characters

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