update : 2015.11.03
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Replace regular expression

ereg_replace

(PHP 4, PHP 5)

ereg_replaceReplace regular expression

설명

string ereg_replace ( string $pattern , string $replacement , string $string )

This function scans string for matches to pattern, then replaces the matched text with replacement.

Warning

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

인수

pattern

A POSIX extended regular expression.

replacement

If pattern contains parenthesized substrings, replacement may contain substrings of the form \digit, which will be replaced by the text matching the digit'th parenthesized substring; \0 will produce the entire contents of string. Up to nine substrings may be used. Parentheses may be nested, in which case they are counted by the opening parenthesis.

string

The input string.

반환값

The modified string is returned. If no matches are found in string, then it will be returned unchanged.

예제

For example, the following code snippet prints "This was a test" three times:

Example #1 ereg_replace() example

<?php

$string 
"This is a test";
echo 
str_replace(" is"" was"$string);
echo 
ereg_replace("( )is""\\1was"$string);
echo 
ereg_replace("(( )is)""\\2was"$string);

?>

One thing to take note of is that if you use an integer value as the replacement parameter, you may not get the results you expect. This is because ereg_replace() will interpret the number as the ordinal value of a character, and apply that. For instance:

Example #2 ereg_replace() example

<?php
/* This will not work as expected. */
$num 4;
$string "This string has four words.";
$string ereg_replace('four'$num$string);
echo 
$string;   /* Output: 'This string has   words.' */

/* This will work. */
$num '4';
$string "This string has four words.";
$string ereg_replace('four'$num$string);
echo 
$string;   /* Output: 'This string has 4 words.' */
?>

Example #3 Replace URLs with links

<?php
$text 
ereg_replace("[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]",
                     
'<a href="\\0">\\0</a>'$text);
?>

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_replace() is deprecated as of PHP 5.3.0. preg_replace() is the suggested alternative to this function.

참고