php 한글 메뉴얼 도움말 검색 사이트 Regular expression match [function.ereg]

설명

int ereg ( string $pattern , string $string [, array &$regs ] )

Searches a string for matches to the regular expression given in pattern in a case-sensitive way.

Warning

이 함수는 PHP 5.3.0부터 배제됩니다. 이 기능에 의존하지 않기를 권합니다.

인수

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.

$regs[1] will contain the substring which starts at the first left parenthesis; $regs[2] will contain the substring starting at the second, and so on. $regs[0] will contain a copy of the complete string matched.

반환값

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.

변경점

버전	설명
4.1.0	Up 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().

예제

Example #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";
}
?>

주의

Note:
PHP 5.3.0부터 regex 확장은 배제되었습니다. PCRE 확장이 같은 기능을 합니다. 이 함수를 호출하면 E_DEPRECATED 주의가 발생합니다. PCRE로 변환하는 데 필요한 도움은 차이점 목록을 참고하십시오.

Tip

ereg() is deprecated as of PHP 5.3.0. preg_match() is the suggested alternative to this function.

참고

eregi() - Case insensitive regular expression match
ereg_replace() - Replace regular expression
eregi_replace() - Replace regular expression case insensitive
preg_match() - 정규표현식 매치를 수행
strpos() - 문자열이 처음 나타나는 위치를 찾습니다
strstr() - 문자열이 처음으로 나오는 부분을 찾습니다
quotemeta() - 메타 문자를 인용