(PHP 4, PHP 5)
ereg_replace — Replace regular expression
$pattern
, string $replacement
, string $string
)
This function scans string for matches to
pattern, then replaces the matched text
with replacement.
Această funcție a fost DEZAPROBATĂ începând cu PHP 5.3.0. Utilizarea acestei facilități este foarte nerecomandată.
patternA 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.
stringThe input string.
The modified string is returned. If no matches are found in
string, then it will be returned unchanged.
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);
?>
Notă:
Începând cu PHP 5.3.0 extensia regex este defavorizată în favoarea extensiei PCRE. Apelarea acestei funcții va emite o notificare
E_DEPRECATED. Accesați lista diferențelor pentru ajutor la convertirea în sintaxa PCRE.
ereg_replace() is deprecated as of PHP 5.3.0. preg_replace() is the suggested alternative to this function.