diamondnular

This code works! It takes generally half of the running time of my code. I think it is much more efficient than mine. Thanks Barand. D.

Arhhh, how can I make that simple mistake? Anyway, thanks ProjectFear. What about the other question? Can I archive the same thing with sort, asort, usort or something similar? Thanks, D.

Hi folks, I have two arrays: $e = Array ( [0 ] => Array ( [id] => 3 [value] => a ) [1] => Array ( [id] => 2 [value] => b ) [2] => Array ( [id] => 5 [value] => c ) ) and $d = Array ( [0 ] => 5 [1] => 2 [2] => 3 ) What I want to do is to sort array $e with values of 'id' of its elements to be the same order as array $d, meaning that after sorting, new array will be $f = Array ( [0 ] => Array ( [id] => 5 [value] => c ) [1] => Array ( [id] => 2 [value] => b ) [2] => Array ( [id] => 3 [value] => a ) ) Here is what I did: <?php $a = array('id' => 3,'value' =>'a'); $b = array('id' => 2,'value' =>'b'); $c = array('id' => 5,'value' =>'c'); $d = array('5','2','3'); print_r($d); $e = array(); array_push($e,$a); array_push($e,$b); array_push($e,$c); print_r($e); $f = array(); foreach ($d as $key) { foreach ($e as $x) { if ($x[id] == $key) array_push($f,$x); } } print_r($f); ?> The code does work, and gave me the result I want. But I have two questions here: 1. I got a notice: Use of undefined constant id - assumed 'id'. That should be $x[id] == $key How do I fix this notice? 2. More important: I think there must be an easier way to do the above, using asort or usort or some function that I maybe not know of. The above is doable, but it is too handy, and not very efficient in my opinion. You guys masters in php have any advice? Remember, I am just novice in php Thanks, D.

Thanks Effigy. D.

Because character classes have their own set of metacharacters. Outside of a character class ^ serves as an anchor, inside it serves as negation. If you want to match all beginning and end tags /<[^>]+>/ will suffice. Got it now, thanks Effigy. Do you know of a good and full reference for PHP REGEX? D.

My mistake. It should read [\/]*. Now I think I understand a little more about REGEX .

Got it now. In order to pull out all the < () > <?php $html = "<b>bold text</b><c>bold text</c><a href=howdy.html><img src='test.jpg' />click me</a>"; preg_match_all("/<[^>]*>/", $html, $matches, PREG_PATTERN_ORDER); print_r($matches); ?> ^> means there is NO addition > in the match. Why this page (http://php-regex.blogspot.com/2008/01/php-regex-cheat-sheet.html) says that ^ is start of the subject??? Anybody corrects me? In order to pull out the img tag only (which is what I am trying to do) <?php $html = "<b>bold text</b><c>bold text</c><a href=howdy.html><img src='test.jpg' />click me</a>"; preg_match_all("/<[^>]*\/>/", $html, $matches, PREG_PATTERN_ORDER); print_r($matches)."\n"; ?> Anybody knows which REGEX reference I should use for preg_match? The page above seems to not work for me (or I am too retarded???). D.

$html is not an array, so you would not use preg_grep. You want to find all occurrences, so you would use preg_match_all since it indicates that it is global. Use str_replace if the string is static; if not, use preg_replace. Thanks Effigy, that is why I am playing with preg_match_all now. Just wonder with your guys experience so that I can learn from you. But I have to admit that PHP regex really drives me crazy. <?php $html = "<b>bold text</b><c>bold text</c><a href=howdy.html>click me</a>"; preg_match_all("/<[\/*]\w>/", $html, $matches, PREG_SET_ORDER); ?> the [\/*] means zero or more \/, so both <b> and </b> will match. But I ran the code, and the output are just </b>,</c>,</a> . What I am doing wrong here?

I already read all above and others as well before asking here (as I said examples there are not enough for me). And I think I have general ideas how they work. Thanks for you input anyway .

Hi folks, Sorry if I am too noob. I am trying to understand how all these functions work, and examples in php.net are not enough for me. What are the MAIN difference between these functions? For example, with $html below, what function I should use to find ALL html tags (<b>, </b>, <img ... />)? Also, if I want to replace img tag <img ... />, str_replace is the best function to use here? $html = "<b>bold text</b><a href=howdy.html><img src='test.jpg' />click me</a>"; Thanks a bunch, D.

Thank you very much Thorpe . D.

Wow, it is so simple that I can not figure it out Thanks a bunch Thorpe. Just another question: can we implement this for the th-running? For example, the check will run if the th-run is third, and will not if others. Thanks, D.

Hi folks, I am coding a page, and the page will call one php function several times. Here is how it works: <?php function display() { // check if run the first // first run task echo 'FIRSTRUN - '; // if not the first, then neglect echo 'test' . "\n"; } ?> so for example, if the function is called 5 times when the page is loaded, the result will be FIRSTRUN - test test test test test Anybody has an idea that will be possible to do? Note that the th-running check is implemented each time the page is loaded, not just the very first time when the function is called. Thanks, D.

Got it sorted now . I made a typo when typing in the codes, and it seemed taking me forever to find it without your helps. Thanks for prompt helps, guys D.

Uhm, interesting. I just tried to run with just the php file alone, and it works too! The problem arose when I tried to modify some codes in a module in Joomla 1.5.3, and with the similar code above, my server returns error: [Mon Jul 07 19:15:33 2008] [error] [client 127.0.0.1] PHP Catchable fatal error: Object of class stdClass could not be converted to string in .../default.php on line 12, referer: http://127.0.0.1/joomla/ Maybe this is some kind of restrictions in Joomla engine, not the problem of the php code.