Posted by Andy Hassall on 02/15/06 23:18

On 15 Feb 2006 12:23:33 -0800, "Bart the bear" <bartthebear@gmail.com> wrote:

>Speaking of this, is there any chance of references to functions in
>PHP?

The closest is create_function() which isn't as good as Perl's ability to pass
code blocks, as you have to embed the anonymous function source in a string.

http://uk2.php.net/create_function

>Also, Perl has qr() construct which compiles regular expressions and
>makes
>things significantly faster. Is there any flag to compile regular
>expression in
>prreg_match?

Looking at the PHP source code, at least for PHP 5.1.2, it already compiles
expressions on first use and keeps the results in a cache - subsequent calls
use the cached compiled version. At least from a quick inspection of
ext/pcre/php_pcre.c, e.g. line 438, within php_pcre_match:

/* Compile regex or get it from cache. */
if ((re = pcre_get_compiled_regex(regex, &extra, &preg_options
TSRMLS_CC)) == NULL) {
RETURN_FALSE;
}

--
Andy Hassall :: andy@andyh.co.uk :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

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