Whats the best way to do a regex search and replace for all instances of array_key_exists() with the more efficient isset()? Please, no Donald Knuth quotes regarding optimizations and yes, I'm aware of the differences between the two functions.
This is what I'm currently using in my Netbeans search and replace:
search for:
array_key_exists\s*\(\s*'([^']*)'\s*,([^)]*)\)
replace with:
isset($2['$1'])
it works well , changing this:
array_key_exists('my_key',$my_array)
to
isset($my_array['my_key'])
but doesn't pick up instances like this:
array_key_exists($my_key,$my_array)
Not the most elegant solution, but adding to your current regex we find both types of search criteria.
array_key_exists\s*(\s*'|$['|\S]\s*,([^)]*))
The best I could do was to run a second search and replace to cover the instances that used variables for both arguments:
array_key_exists($my_key,$my_array)
search and replace 2:
search for:
array_key_exists\s*\(\s*(\$[^,]*)\s*,([^)]*)\)
replace with:
isset($2[$1])
If you need a WIDER spectrum when upgrading the PHP version rather than JUST this upper use case:
Didn't clean it up, but it should catch every instance I could think of.
Search:
array_key_exists\s*\(\s*([^,]*)\s*,\s*((\(\w+\))?[a-z0-9_$'"\{\}\[\]\-\>\:]*(\(\))*[a-z0-9$_\.\{\}\'\"\[\]\-\>\:]*)\)
Replace:
isset($2[$1])
Related
I have a search string like this ...
shop.php?querytp=&query22=&query20=&query21=&querytp1=&querytp2=Shed&querytp3=
which does the job up to a point but I would like to stop the search from finding words within words so that a search for 'shed' doesn't pull up 'brushed' or 'polished' for instance. If I add + to the URL manually so that it becomes ...
shop.php?querytp=&query22=&query20=&query21=&querytp1=&querytp2=+Shed&querytp3=
that does the trick. Lots of the queries are empty at times.
Can htaccess sort this out for me? Bit beyond me this to be honest with you.
Thanks
You could use the php function preg_match to handle your search.
Something like:
preg_match("~\b [$your_search_value] \b~",$were_to_search)
Example:
https://stackoverflow.com/a/16283883/4601619
Read more about the preg_match function on:
http://php.net/manual/en/function.preg-match.php
I am trying to update hundreds of lines of comments in my php files. My editor allows me to use regular expressions to perform a search and replace. However, I don't know much about regular expression to write it. Please refer to example below.
Dump($Data1, 'Library_reports.php - Get_Filtered_InventoryReport() - $Data1');
Dump($Data2, 'Library_reports.php - Get_Filtered2InventoryReport() - $Data2');
Dump($Data3, 'Library_reports.php - GetFilteredInventoryReport() - $Data3');
to be replace with
Dump($Data1, __METHOD__.' - $Data1');
Dump($Data2, __METHOD__.' - $Data2');
Dump($Data3, __METHOD__.' - $Data3');
So basically, I want to search for
'Some_Alphanumeric_string()
and then replace it with a
__METHOD__.'
Give it a try: [A-Za-z0-9_]() it's nothing complicated here.
Edit:
[A-Za-z0-9_]+\(\)
StackOverflow eats my backslashes :)
Search with:
([a-zA-Z0-9]+)\(\)
Replace with:
^ intentionally left blank
Based on your description, this search regex will do the trick:
\b[a-z0-9_]+\b\(\)
...assuming you do case insensitive search. (It's an option in the Dreamweaver search/replace tool).
Otherwise:
\b[A-Za-z0-9_]+\b\(\)
Note: I've included the underscore in the character class based on your use of them in:
"Some_Alphanumeric_string()"
I've got a problem with regexp function, preg_replace(), in PHP.
I want to get viewstate from html's input, but it doesn't work properly.
This code:
$viewstate = preg_replace('/^(.*)(<input\s+id="__VIEWSTATE"\s+type="hidden"\s+value=")(.*[^"])("\s+name="__VIEWSTATE">)(.*)$/u','^\${3}$',$html);
Returns this:
%0D%0A%0D%0A%3C%21DOCTYPE+html+PUBLIC+%22-%2F%2FW3C%2F%2FDTD+XHTML+1.0+Transitional%2F%2FEN%22+%22http%3A%2F%2Fwww.w3.org%2FTR%2Fxhtml1%2FDTD%2Fxhtml1-transitional.dtd%22%3E%0D%0A%0D%0A%3Chtml+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1999%2Fxhtml%22+%3E%0D%0A%3Chead%3E%3Ctitle%3E%0D%0A%09Strava.cz%0D%0A%3C%2Ftitle%3E%3Clink+rel%3D%22shortcut+icon%22+href%3D%22..%2FGrafika%2Ffavicon.ico%22+type%3D%22image%2Fx-icon%22+%2F%3E%3Clink+rel%3D%22stylesheet%22+type%3D%22text%2Fcss%22+media%3D%22screen%22+href%3D%22..%2FStyly%2FZaklad.css%22+%2F%3E%0D%0A++++%3Cstyle+type%3D%22text%2Fcss%22%3E%0D%0A++++++++.style1%0D%0A++++++++%7B%0D%0A++++++++++++width%3A+47px%3B%0D%0A++++++++%7D%0D%0A++++++++.style2%0D%0A++++++++%7B%0D%0A++++++++++++width%3A+64px%3B%0D%0A++++++++%7D%0D%0A++++%3C%2Fstyle%3E%0D%0A%0D%0A%3Cscript+type%3D%22text%2Fjavascript%22%3E%0D%0A%0D%0A++var+_gaq+%3D+_gaq+%7C%7C+%5B%5D%3B%0D%0A++_gaq.push%28%5B
EDIT: Sorry, I left this question for a long time. Finally I used DOMDocument.
To be sure i'd split this match into two phases:
Find the relevant input element
Get the value
Because you cannot be certain what the attributes order in the element will be.
if(preg_match('/<input[^>]+name="__VIEWSTATE"[^>]*>/i', $input, $match))
$value = preg_replace('/.*value="([^"]*)".*/i', '$1', $match[0]);
And, of course, always consider DOM and DOMXpath over regex for parsing html/xml.
You should only capture when you're planning on using the data. So most () are obsolete in that regexp pattern. Not a cause for failure but I thought I'd mention it.
Instead of using [^"] to mark that you don't want that character you could use the non-greedy modifier - ?. This makes sure the pattern is matching as little as it can. Since you have name="__VIEWSTATE" following the value this should be safe.
Let's put this in practice and simplify the pattern some. This works as you want:
'/.*<input\s+id="__VIEWSTATE"\s+type="hidden"\s+value="(.+?)"\s+name="__VIEWSTATE">.*/'
I would strongly recommend checking out an alternative to regexp for DOM operations. This makes certain your code works also if the attributes changes order. Plus it's so much nicer to work with.
The main mistake was the use of funciton preg_replace, witch returns the subject - neither the matched pattern nor the replacement. Thank you for your ideas and for the recommendation of DOMDocument. m93a
http://www.php.net/manual/en/function.preg-replace.php#refsect1-function.preg-replace-returnvalues
I'm a newbie in PHP regex patterns, so i tried to make a pattern for this URL:
$turl=http://ss-3.domian.com/screenshot/50/18/screenshot_multiple/501800/501800_multiple_1_extra_large.jpg
I just want to retrieve 3 things: "3", "50/18", "501800"
So I used this code:
preg_match('#http://ss-(.*?).domain.com/screenshot/(.*?)/screenshot_multiple/(.*?)/(.*?)_multiple_1_extra_large\.jpg#',$turl,$t_url)
So if I use $matches[1]=3; $matches[2]=50/18; $matches[3]=501800, I should get the numbers right??
<?php
$turl = 'http://ss-3.domain.com/screenshot/50/18/screenshot_multiple/501800/501800_multiple_1_extra_large.jpg';
preg_match_all('#http://ss\-([^\.]*)\.domain.com/[^/]+/([^/]*)/([^/]*)/[^/]*/([^/]*)/([^/]*)#msi',$turl,$match);
// For testing
var_dump($match);
?>
You had a typo (domian) in the search string and it wasn't in quotes. This sort of URL is likely to change, so I've made it as generic as possible while still keeping the shape. I think if we knew your problem we would reconsider using regex if possible. Also, reading the function declarations in php.net is a big help and will give you a good understanding of their applications.
Regex is my bete noire, can anyone help me isolate a string from a URL?
I want to get the page name from a URL which could appear in any of the following ways from an input form:
https://www.facebook.com/PAGENAME?sk=wall&filter=2
http://www.facebook.com/PAGENAME?sk=wall&filter=2
www.facebook.com/PAGENAME
facebook.com/PAGENAME?sk=wall
... and so on.
I can't seem to find a way to isolate the string after .com/ but before ? (if present at all). Is it preg_match, replace or split?
If anyone can recommend a particularly clear and introductory regex guide they found useful, it'd be appreciated.
You can use the parse_url function and then get the last segment from the path of the url:
$parts=parse_url($url);
$path_parts=explode("/", $parts["path"]);
$page=$path_parts[count($path_parts)-1];
For learning and testing regexes I found RegExr, an online tool, very useful: http://gskinner.com/RegExr/
But as others mentioned, parsing the url with appropriate functions might be better in this case.
I think you can use this php function (parse_url) directly instead of using regex.
Use smth like:
substr(parse_url('https://www.facebook.com/PAGENAME?sk=wall&filter=2', PHP_URL_PATH), 1);