I'd like to check each time a string contains a link and then extract it.
example:
'Check this out… https://www.link.co… and also check this out https://www.link2.co'
I know how to check if a string contains a substring ONCE using:
if (strpos($request_content, '!test') === 0) {}
however I dont know how to check each time and then extract that.. in this case i'd like to extract each link by finding the pattern http
so in the above example id like to output both links as variables like
var1 - https://www.link.co
var2 - https://www.link2.co
How can I accomplish this? Thank you!
The key in here is "pattern" as you said. In php, there is a function that has called "preg_replace" which basicly checks a pattern in your string and replaces it with something else you specified. So the code needs to be like this:
/*----- Define your string in here ------*/
$my_text = 'Check this out… https://www.link.co… and also check this out https://www.link2.co';
/*----- Replace links in it ------*/
$my_text = preg_replace('|([\w\d]*)\s?(https?://([\d\w\.-]+\.[\w\.]{2,6})[^\s\]\[\<\>]*/?)|i', '$1 $3', $my_text);
/*----- Echo result ------*/
echo $my_text;
Related
I currently use:
if(strpos($command->href,§current_view) !== false){
echo '<pre>true</pre>';
} else {
echo '<pre>false</pre>';
}
$command->href will output something like this: /path/index.php?option=com_component&view=orders Whereas
§current_view is outputting orders. These outputs are dynamically generated, but the scheme will always be the same.
What I need to do is return true/false if the words from $current_view match the view=orders in the URLs from $command->href. The issue with my code is, that it doesnt match anything.
What is the correct way to do this?
Please note that the $command->href and the whole code is inside a while function, that pass multiple URLs and this only needs to match the same ones.
Breaking it down to a simple example, using your code and variable values.
$current_view = 'orders';
$command = '/path/index.php?option=com_component&view=orders';
if(strpos($command,$current_view) !== false){
echo '<pre>true</pre>';
}
else {
echo '<pre>false</pre>';
}
The oputput is "true".
Now, go and debug the REAL values of $command->href and $current_view...
I'm pretty confident that the values are not what you think they are.
Does something like:
if(substr($command->href, strrpos($command->href, '&') + 6) == $current_view)
accomplish what you are after?
To explain, strpos get the last instance of a character in a string (& for you, since you said it always follows the scheme). Then we move over 6 characters to take "&view=" out of the string.
You should now be left with "orders" == "orders".
Or do you sometimes include some arguments after the view?
Try parsing url, extracting your view query string value and compare it to $current_view
$query= [];
parse_str(parse_url($command->href)['query'], $query);
if($current_view === $query["view"])
echo '<pre>true</pre>';
} else {
echo '<pre>false</pre>';
}
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 am trying to create file links based a variable which has a "prefix" and an extension at the end.
Here's what I have:
$url = "http://www.example.com/mods/" . ereg("^[A-Za-z_\-]+$", $title) . ".php";
Example output of what I wish to have outputted (assuming $title = testing;):
http://www.example.com/mods/testing.php
What it currently outputs:
http://www.example.com/mods/.php
Thanks in advance!
Perhaps this is what you need:
$title = "testing";
if(preg_match("/^[A-Za-z_\-]+$/", $title, $match)){
$url = "http://www.example.com/mods/".$match[0].".php";
}
else{
// Think of something to do here...
}
Now $url is http://www.example.com/mods/testing.php.
Do you want to keep letters and remove all other chars in the URL?
In this case the following should work:
$title = ...
$fixedtitle=preg_replace("/[^A-Za-z_-]/", "", $title);
$url = "http://www.example.com/mods/".$fixedtitle.".php";
the inverted character class will remove everything you do not want.
OK first it's important for you to realize that ereg() is deprecated and will eventually not be available as a command for php, so to prevent an error down the road you should use preg_match instead.
Secondly, both ereg() and preg_match output the status of the match, not the match itself. So
ereg("^[A-Za-z_\-]+$", $title)
will output an integer equal to the length of the string in $title, 0 if there's no match and 1 if there's a match but you didn't pass it another variable to store the matches in.
I'm not sure why it's displaying
http://www.example.com/mods/.php
It should actually be outputting
http://www.example.com/mods/1.php
if everything was working correctly. So there is something going on there, and it's definitely not doing what you want it to. You need to pass another variable to the function that will store all the matches found. If the match is successful (which you can check using the return value of the function) then that variable will be an array of all matches.
Note that with preg_match by default only the first match will be returned. but it will still generate an array (which can be used to get isolated portions of the match) whereas preg_match_all will match multiple things.
See http://www.php.net/manual/en/function.preg-match.php for more details.
Your regex looks more or less correct
So the proper code should look something like:
$title = 'testing'; //making sure that $title is what we think it is
if (preg_match('/^[A-Za-z_\-]+$/',$title,$matches)) {
$url = "http://www.example.com/mods/" . $matches[0] . ".php";
} else {
//match failed, put error code in here
}
How would I go about searching/matching for a paticular set of a characters in a filename, for example 3XYTPRQgz.pdf is the filename, I need to search for '3XYTPRQ', then if this string is found I simply want to output 'job completed', if its not there it will be set to queued. ( I want to do this for more than one file).
My thoughts on how to do this is, (I am struggling on the matching of the string part) :
<?php
if(match("7digitnumber) //then < not sure what function to use any tips?
if file_exists($7digitnumber/filename)
{
echo "completed";
}
else
{
echo "queued";
}
?>
Thanks for any help.
If you simply want to find out if a given string (your case "3XYTPRQ") is part of a longer string ("3XYTPRQgz.pdf") you can take a look at strstr.
I am building a gallery in WordPress and I'm trying to grab a specific part of my URL to echo into the id of a div.
This is my URL:
http://www.url.com/gallery/truck-gallery-1
I want to isolate the id of the gallery which will always be a number(in this case its 1). Then I would like to have a way to print it somewhere, maybe in the form of a function.
You should better use $_SERVER['REQUEST_URI']. Since it is the last string in your URL, you can use the following function:
function getIdFromUrl($url) {
return str_replace('/', '', array_pop(explode('-', $url)));
}
#Kristian 's solution will only return numbers from 0-9, but this function will return the id with any length given, as long as your ID is separated with a - sign and the last element.
So, when you call
echo getIdFromUrl($_SERVER['REQUEST_URI']);
it will echo, in your case, 1.
If the ID will not always be the same number of digits (if you have any ID's greater than 9) then you'll need something robust like preg_match() or using string functions to trim off everything prior to the last "-" character. I would probably do:
<?php
$parts = parse_url($_SERVER['REQUEST_URI']);
if (preg_match("/truck-gallery-(\d+)/", $parts['path'], $match)) {
$id = $match[1];
} else {
// no ID found! Error handling or recovery here.
}
?>
Use the $_SERVER['REQUEST_URI'] variable to get the path (Note that this is not the same as the host variable, which returns something like http://www.yoursite.com).
Then break that up into a string and return the final character.
$path = $_SERVER['REQUEST_URI'];
$ID = $path[strlen($path)-1];
Of course you can do other types of string manipulation to get the final character of a string. But this works.