I have some images in my database
http://***.com/2013/12/reign-death-midseason-finale-featured.jpg?w=500
http://***.com/reign-death-midseason-finale-featured.png?w=120
http://***.com/2013/12/finale-featured.jpg?w=50
http://***.com/2013/finale-featured.jpg?w=50&h=50
http://***.com/2013/12/reign-death-midseason-finale-featured.jpg
I want to change the images with w= to same width and ?w=50&h=50 also. all with W should come as w=600 and w=600&h=600. This is what I was trying str_replace but there is a problem with this that w= always change and in some cases there is height also and it also need to be changed, i have search net and found that it can be done with preg_replace don't know how.
EDIT
Answer needed is if(hight is null) result is case 1 w=600 and if h is not null case 2 w=600&h=600
please help
Sorry it took me a while, I was kinda busy
try the following
$pattern = '~(?<=\W(w|h)\=)(\d+?)(?=\D|$)~';
$replace = '600';
$subject = 'http://localhost/2013/finale-featured.jpg?w=50&h=50';
echo preg_replace($pattern,$replace,$subject);
try this with many variations of your URIs
PS: this kind of advanced string finding/replacing is the domain of regular expressions. If you find you need to do a lot of this, consider starting to learn about them, it's a whole language in itself. I used some assertions (lookahead (?<=) and lookbehind (?=)) for this particular solution
If you want to avoid using a regular expression you can parse the URL and query string into arrays, which would make evaluating the query string values much easier.
$url = 'http://***.com/2013/finale-featured.jpg?w=50&h=50';
$urlArray = parse_url($url);
parse_str($urlArray['query'], $queryStringArray);
if ( !isset($queryStringArray['h']) || $queryStringArray['h'] === null ) {
} else if ( ... ) {
} else if ( ... ) {
}
Related
Working in WordPress (PHP). I want to set strings to the database like below. The string is translatable, so it could be in any language keeping the template codes. For the possible variations, I presented 4 strings here:
<?php
$string = '%%AUTHOR%% changed status to %%STATUS_new%%';
$string = '%%AUTHOR%% changed status to %%STATUS_oldie%%';
$string = '%%AUTHOR%% changed priority to %%PRIORITY_high%%';
$string = '%%AUTHOR%% changed priority to %%PRIORITY_low%%';
To make the string human-readable, for the %%AUTHOR%% part I can change the string like below:
<?php
$username = 'Illigil Liosous'; // could be any unicode string
$content = str_replace('%%AUTHOR%%', $username, $string);
But for status and priority, I have different substrings of different lengths.
Question is:
How can I make those dynamic substring be replaced on-the-fly so that they could be human-readable like:
Illigil Liosous changed status to Newendotobulous;
Illigil Liosous changed status to Oldisticabulous;
Illigil Liosous changed priority to Highlistacolisticosso;
Illigil Liosous changed priority to Lowisdulousiannosso;
Those unsoundable words are to let you understand the nature of a translatable string, that could be anything other than known words.
I think I can proceed with something like below:
<?php
if( strpos($_content, '%%STATUS_') !== false ) {
// proceed to push the translatable status string
}
if( strpos($_content, '%%PRIORITY_') !== false ) {
// proceed to push the translatable priority string
}
But how can I fill inside those conditionals efficiently?
Edit
I might not fully am clear with my question, hence updating the query. The issue is not related to array str_replace.
The issue is, the $string that I need to detect is not predefined. It would come like below:
if($status_changed) :
$string = "%%AUTHOR%% changed status to %%STATUS_{$status}%%";
else if($priority_changed) :
$string = "%%AUTHOR%% changed priority to %%PRIORITY_{$priority}%%";
endif;
Where they will be filled dynamically with values in the $status and $priority.
So when it comes to str_replace() I will actually use functions to get their appropriate labels:
<?php
function human_readable($codified_string, $user_id) {
if( strpos($_content, '%%STATUS_') !== false ) {
// need a way to get the $status extracted from the $codified_string
// $_got_status = ???? // I don't know how.
get_status_label($_got_status);
// the status label replacement would take place here, I don't know how.
}
if( strpos($_content, '%%PRIORITY_') !== false ) {
// need a way to get the $priority extracted from the $codified_string
// $_got_priority = ???? // I don't know how.
get_priority_label($_got_priority);
// the priority label replacement would take place here, I don't know how.
}
// Author name replacement takes place now
$username = get_the_username($user_id);
$human_readable_string = str_replace('%%AUTHOR%%', $username, $codified_string);
return $human_readable_string;
}
The function has some missing points where I currently am stuck. :(
Can you guide me a way out?
It sounds like you need to use RegEx for this solution.
You can use the following code snippet to get the effect you want to achieve:
preg_match('/%%PRIORITY_(.*?)%%/', $_content, $matches);
if (count($matches) > 0) {
$human_readable_string = str_replace("%%PRIORITY_{$matches[0]}%%", $replace, $codified_string);
}
Of course, the above code needs to be changed for STATUS and any other replacements that you require.
Explaining the RegEx code in short it:
/
The starting of any regular expression.
%%PRIORITY_
Is a literal match of those characters.
(
The opening of the match. This is going to be stored in the third parameter of the preg_match.
.
This matches any character that isn't a new line.
*?
This matches between 0 and infinite of the preceding character - in this case anything. The ? is a lazy match since the %% character will be matched by the ..
Check out the RegEx in action: https://regex101.com/r/qztLue/1
I have a page working as I need it to, with the last /arist-name/ parsing into the correct variable, but the client is adding /artist-name/?google-tracking=1234fad to their links, which is breaking it.
http://www.odonwagnergallery.com/artist/pierre-coupey/ WORKS
http://www.odonwagnergallery.com/artist/pierre-coupey/?mc_cid=b7e918fce5&mc_eid=[UNIQID] DOES NOT WORK
$expl = explode("/",$_SERVER["REQUEST_URI"]);
$ArtistURL = $expl[count($expl)-1];
$ArtistURL = preg_replace('/[^a-z,-.]/', '', $ArtistURL);
Please help, I have been searching for a solution. Thanks so much!
PHP has a function called parse_url which should clean up the request uri for you before you try to use it.
parse_url
Parse a URL and return its components
http://php.net/parse_url
Example:
// This
$url_array = parse_url('/artist/pierre-coupey/?mc_cid=b7e918fce5&mc_eid=[UNIQID]');
print_r($url_array);
// Outputs this
Array
(
[path] => /artist/pierre-coupey/
[query] => mc_cid=b7e918fce5&mc_eid=[UNIQID]
)
Here is a demo: https://eval.in/873699
Then you can use the path piece to perform your existing logic.
If all your URLs are http://DOMAIN/artist/SOMEARTIST/
you could do:
$ArtistURL = preg_replace('/.*\/artist\/(.*)\/.*/','$1',"http://www.odonwagnergallery.com/artist/pierre-coupey/oij");
It would work in this context. Specify other possible scenarios if there are others. But #neuromatter answer is more generic, +1.
if you simply want to remove any and all query parameters, this single line would suffice:
$url=explode("?",$url)[0];
this would turn
http://www.odonwagnergallery.com/artist/pierre-coupey/?mc_cid=b7e918fce5&mc_eid=[UNIQID]&anything_else=whatever
into
http://www.odonwagnergallery.com/artist/pierre-coupey/
but if you want to specifically remove any mc_cid and mc_eid parameters, but otherwise keep the url intact:
$url=explode("?",$url);
if(count($url)===2){
parse_str($url[1],$tmp);
unset($tmp['mc_cid']);
unset($tmp['mc_eid']);
$url=$url[0].(empty($tmp)? '':('?'.http_build_query($tmp)));
}else if(count($url)===1){
$url=$url[0];
}else{
throw new \LogicException('malformed url!');
}
this would turn
http://www.odonwagnergallery.com/artist/pierre-coupey/?mc_cid=b7e918fce5&mc_eid=[UNIQID]&anything_else=whatever
into
http://www.odonwagnergallery.com/artist/pierre-coupey/?anything_else=whatever
I am having one hell of a time coming up with a decent way make this if statement search a file for these codes. I set up the text file to read from as such:
myfile.txt
r)
0Y7
1a6
q.
#g
#(
#a
!P
T[
V}
0,
Here is a brief of what I got going.
$subject = file_get_contents(fvManager_Path . 'myfile.txt');
if ( preg_match('/^[a-zA-Z0-9,]+$/',$result['fmbushels_itemCode'], $subject) ) {
Basically I am trying to search the text file line by line to see if the whole string exists. They are case sensitive as well.
$result['fmbushels_itemCode'] is from a sql query and always returns a code like the above in the text.
I'd appreciate any help on this. If someone knows a better way of doing this or a different command, I'd be willing to give that a shot as well :)
edit:
private function _fvShareBushels() {
$subject = file_get_contents(fvManager_Path . 'myfile.txt');
if (count($vShareArray) > 0) {
$vCntMoves = count($vShareArray);
for ($vI = 0;$vI < $vRunMainLoop;$vI++) {
sell $result['fmbushels_itemCode']);
}
}
}
This is a snippet of a big code. I had to rip most out because of post limitation. The area I could be working with is:
if (count($vShareArray) > 0) {
If I could make this something like:
if (count($vShareArray) > 0 && $result['fmbushels_itemCode'] **is not in** $subject) {
If you want to do line by line, use the file() function.
$f = file(fvManager_Path . 'myfile.txt');
foreach($f AS $line){
// $line is current line at file
}
I'm not to sure if you understand completely how preg_match works. The first parameter is the regular expression pattern, the second is what you want to match the pattern to, and the third is an array of matches. So for every valid pattern matched in the second parameter a new index on the array is created.
I'm not 100% on what you're trying to accomplish. Are you trying to see if the $result['fmbushels_itemCode'] exists in the file?
If the above is the correct case you simply just need to do something like:
$f = file('myfile.txt');
array_map('trim', $f);
if(in_array($result['fmbushels_itemCode'], $f)){
// success
}
This is a follow-up question to the one I posted here (thanks to mario)
Ok, so I have a preg_replace statement to replace a url string with sometext, insert a value from a query string (using $_GET["size"]) and insert a value from a associative array (using $fruitArray["$1"] back reference.)
Input url string would be:
http://mysite.com/script.php?fruit=apple
Output string should be:
http://mysite.com/small/sometext/green/
The PHP I have is as follows:
$result = preg_replace('|http://www.mysite.com/script.php\?fruit=([a-zA-Z0-9_-]*)|e', ' "http://www.mysite.com/" .$_GET["size"]. "/sometext/" .$fruitArray["$1"]. "/"', $result);
This codes outputs the following string:
http://mysite.com/small/sometext//
The code seems to skip the value in $fruitArray["$1"].
What am I missing?
Thanks!
Well, weird thing.
Your code work's perfectly fine for me (see below code that I used for testing locally).
I did however fix 2 things with your regex:
Don't use | as a delimiter, it has meaning in regex.
Your regular expression is only giving the illusion that it works as you're not escaping the .s. It would actually match http://www#mysite%com/script*php?fruit=apple too.
Test script:
$fruitArray = array('apple' => 'green');
$_GET = array('size' => 'small');
$result = 'http://www.mysite.com/script.php?fruit=apple';
$result = preg_replace('#http://www\.mysite\.com/script\.php\?fruit=([a-zA-Z0-9_-]*)#e', ' "http://www.mysite.com/" .$_GET["size"]. "/sometext/" .$fruitArray["$1"]. "/"', $result);
echo $result;
Output:
Rudis-Mac-Pro:~ rudi$ php tmp.php
http://www.mysite.com/small/sometext/green/
The only thing this leads me to think is that $fruitArray is not setup correctly for you.
By the way, I think this may be more appropriate, as it will give you more flexibility in the future, better syntax highlighting and make more sense than using the e modifier for the evil() function to be internally called by PHP ;-) It's also a lot cleaner to read, IMO.
$result = preg_replace_callback('#http://www\.mysite\.com/script\.php\?fruit=([a-zA-Z0-9_-]*)#', function($matches) {
global $fruitArray;
return 'http://www.mysite.com/' . $_GET['size'] . '/sometext/' . $fruitArray[$matches[1]] . '/';
}, $result);
i write it again, i don't understand good where is the error, the evaluation of preg results is very weird in php
preg_replace(
'|http\://([\w\.-]+?)/script\.php\?fruit=([\w_-]+)|e'
, '"http://www.$1/".$_GET["size"]."/sometext/".$fruitArray["$2"]."/";'
, $result
);
It looks like you have forgotten to escape the ?. It should be /script.php\?, with a \? to escape properly, as in the linked answer you provided.
$fruitArray["\$1"] instead of $fruitArray["$1"]
Okay so i set up this thing so that I can print out page that people came from, and then put dummy tags on certain pages. Some pages have commented out "linkto" tags with text in between them.
My problem is that some of my pages don't have "linkto" text. When I link to this page from there I want it to grab everything between "title" and "/title". How can I change the eregi so that if it turns up empty, it should then grab the title?
Here is what I have so far, I know I just need some kind of if/then but I'm a rank beginner. Thank you in advance for any help:
<?php
$filesource = $_SERVER['HTTP_REFERER'];
$a = fopen($filesource,"r"); //fopen("html_file.html","r");
$string = fread($a,1024);
?>
<?php
if (eregi("<linkto>(.*)</linkto>", $string, $out)) {
$outdata = $out[1];
}
//echo $outdata;
$outdatapart = explode( " " , $outdata);
echo $part[0];
?>
Here you go: if eregi() fails to match, the $outdata assignment will never happen as the if block will not be executed. If it matches, but there's nothing between the tags, $outdata will be assigned an empty string. In both cases, !$outdata will be true, so we can fallback to a second match on the title tag instead.
if(eregi("<linkto>(.*?)</linkto>", $string, $link_match)) {
$outdata = $link_match[1];
}
if(!$outdata && eregi("<title>(.*?)</title>", $string, $title_match)) {
$outdata = $title_match[1];
}
I also changed the (.*) in the match to (.*?). This means, don't be greedy. In the (.*) form, if you had $string set to
<title>Page Title</title> ...
... <iframe><title>A second title tag!</title></iframe>
The regex would match
Page Title</title> ... ... <iframe><title>A second title tag!
Because it tries to match as much as possible, as long as the text is between any and any other !. In the (.*?) form, the match does what you'd expect - it matches
Page Title
And stops as soon as it is able.
...
As an aside, this thing is an interesting scheme, but why do you need it? Pages can link to other pages and pass parameters via the query string:
...
Then somescript.php can access the prevpage parameter via the $_GET['prevpage'] superglobal variable.
Would that solve your problem?
The POSIX regex extension (ereg etc.) will be deprecated as of PHP 5.3.0 and may be gone completely come PHP 6, you're better off using the PCRE functions (preg_match and friends).
The PCRE functions are also faster, binary safe and support more features like non-greedy matching etc.
Just a pointer.
you need if, else.
if(eregi(...))
{
.
.
.
}
else
{
just grab title;
}
perhaps you should have done a quick google search to find this very simple answer.
Just add another if test before you assign the match to $outdata:
if (eregi("<linkto>(.*)</linkto>", $string, $out)) {
if ($out[1] != "") {
$outdata = $out[1];
} else {
// Look in the title.
}
}