str_ireplace() for php4?

[Simon]

Hi,

would anybody have a version of str_irepalce(),
(http://uk.php.net/manual/en/function.str-ireplace.php) for php4?

The doc mentions eregi_replace() and preg_repalce() but I cannot get my head
around it.

Would anybody have a few lines of code that would reproduce the
functionality above.

What I actually need to do is a search an replace of a web address.

Simon

[Janwillem Borleffs]

Simon wrote:

would anybody have a version of str_irepalce(),
(http://uk.php.net/manual/en/function.str-ireplace.php) for php4?

The doc mentions eregi_replace() and preg_repalce() but I cannot get
my head around it.

if (!function_exists('str_ireplace')) {
function str_ireplace($needle, $str, $haystack) {
return preg_replace("/$needle/i", $str, $haystack);
}
}
JW

[Simon]

> Simon wrote:

would anybody have a version of str_irepalce(),
(http://uk.php.net/manual/en/function.str-ireplace.php) for php4?

The doc mentions eregi_replace() and preg_repalce() but I cannot get
my head around it.

if (!function_exists('str_ireplace')) {
function str_ireplace($needle, $str, $haystack) {
return preg_replace("/$needle/i", $str, $haystack);
}
}

Thanks!

Just out of curiosity, would it work if $needle, $str, $haystack had
escape/special characters?

Simon

[Janwillem Borleffs]

Simon wrote:

Just out of curiosity, would it work if $needle, $str, $haystack had
escape/special characters?

Good point. You need to escape reserved regular expression characters in
$needle as follows:

if (!function_exists('str_ireplace')) {
function str_ireplace($needle, $str, $haystack) {
$needle = preg_quote($needle, '/');
return preg_replace("/$needle/i", $str, $haystack);
}
}

$str and $haystack do not need to be modified.
JW

[Chung Leong]

Simon wrote:

Hi,

would anybody have a version of str_irepalce(),
(http://uk.php.net/manual/en/function.str-ireplace.php) for php4?

The doc mentions eregi_replace() and preg_repalce() but I cannot get my head
around it.

Would anybody have a few lines of code that would reproduce the
functionality above.

What I actually need to do is a search an replace of a web address.

Simon

Just grab the function from PEAR::PHP_Compat
(http://pear.php.net/package/PHP_Compat/).

[Toby Inkster]

Janwillem Borleffs wrote:

Simon wrote:

Just out of curiosity, would it work if $needle, $str, $haystack had
escape/special characters?

Good point. You need to escape reserved regular expression characters in
$needle as follows:

if (!function_exists('str_ireplace')) {
function str_ireplace($needle, $str, $haystack) {
$needle = preg_quote($needle, '/');
return preg_replace("/$needle/i", $str, $haystack);
}
}

$str and $haystack do not need to be modified.

What if $str contained "\1"?

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact

[Janwillem Borleffs]

Toby Inkster wrote:

What if $str contained "\1"?

You probably mean "\\1", which will contain pattern matches grouped by
parenthesis, but these will be ignored as preg_quote is used to escape the
parenthesis when occurring in $needle.
JW

[Chung Leong]

Janwillem Borleffs wrote:

Toby Inkster wrote:

What if $str contained "\1"?

You probably mean "\\1", which will contain pattern matches grouped by
parenthesis, but these will be ignored as preg_quote is used to escape the
parenthesis when occurring in $needle.

Actually, \1 would end up being an empty string if the pattern doesn't
specify capturing.

[Simon]

>>

Simon

Just grab the function from PEAR::PHP_Compat
(http://pear.php.net/package/PHP_Compat/).

That's great, didn't know it existed.

Thanks for that.

Simon