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For my Laravel-based site, I need to find # and # within text content and replace it with a URL, such as a URL pointing at a user's Twitter page. How can I:
reliably find these strings within text portions of the HTML
replace found instances with a URL
The code for it is vast. You will have to use ajax here, in the textarea/textbox you will have to use "onkeyup" event, every key pressed have to be compared with "#" or "#" then the next character right after "#" has to be searched in the database.
So lets saw the user has typed "#A" till now and the user aims to type "#Ankur" Then as soon as "A" is typed the ajax script will start searching for users in the database and it is retrieved with the name, url and you just have to echo it on the screen.
THis is what you are looking for.. https://stackoverflow.com/a/4277114/829533
$strTweet = preg_replace('/(^|\s)#(\w*[a-zA-Z_]+\w*)/', '\1#\2', $strTweet);
And https://stackoverflow.com/a/4766219/829533
$input = preg_replace('/(?<=^|\s)#([a-z0-9_]+)/i', '#$1', $input);
Using regex it's rather simple. I would make one function that takes a prefix and replacement, like so.
function tweetReplaceObjects($input, $prefix, $replacement) {
return preg_replace("/$prefix([A-Za-z0-9_-])/", $replacment, $input);
}
An example usage would be something like this.
$text = 'hey look, it\'s #stackoverflow over there';
// expected output:
// hey look, it's stackoverflow over there
echo tweetReplaceObjects($text, '#', '$1');
Related
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I have a database of articles that contains about 4,000 broken links in roughly 8,000 articles. About half of these broken links follow a pattern that, with the right PHP script, can be used to automatically fix those broken links.
The broken links in question contain links like this:
<a href="http://www.mydomain.tld/article1234-plus-a-slug-
that-varies-in-length.html">some text</a>
The "1234" part represents the unique ID of the article. It can be a three to five digit number between 101 and 10700. The database record for that unique ID contains the correct URL for the page.
I need to identify the strings in the HTML of each article that fit this pattern, extract the "1234" part of the URL, assign it to a $variable, and then replace the URL in the HTML markup of the article for that link with the correct URL taken from the database for that unique ID.
I suspect that preg_match is an appropriate function to use in this case, but I really can't see how to build the PHP script. (My PHP skills aren't great. Neither are my regex skills.) Can anyone help me with a simple script to handle this task?
$url = '<a href="http://www.mydomain.tld/article1234-plus-a-slug-
that-varies-in-length.html">some text</a>';
preg_match("#article([0-9]+)#i", $url , $urlmatches);
printf( 'id: %d' , (int) $urlmatches[1] );
Yes, regular expresion seems nice for this challenge.
If these are the only one digits with length from 3 to 5 you can use the following regex:
$str = "http://www.mydomain.tld/article1234-plus-a-slug-
that-varies-in-length.html";
preg_match_all('/[0-9]{3,5}/', $str, $matches);
var_dump($matches);
{3,5} represents the length. So the output here is:
array (size=1)
0 =>
array (size=1)
0 => string '1234' (length=4)
Is that what you were looking for?
$html = '<a href="http://www.mydomain.tld/article1234-plus-a-slug-
that-varies-in-length.html">';
$html = preg_replace('|<a href="[^"]*article(\d+)[^>]*>|', '<a href="htttp://example.com/article.php?id=$1">', $html);
print $html . "\n";
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This one may be a bit of a doozy.
I have 2 sets of files in separate folders:
SET 1:
celeb1.png
celeb2.png
celeb3.png
celeb4.png
celeb5.png
etc
The user selects an image (radio) and I then set this as a get variable on the url:
Now, I want to match another file.
In another folder, I have a set like this:
SET 2:
celeb1-24_59_250_300.png
celeb2-35_67_200_250.png
celeb3-54_87_300_400.png
celeb4-88_98_250_350.png
celeb5-87_43_300_400.png
etc
I want to use the GET variable (i.e.) celeb1.png, and then select the full filename of the corresponding file, based on the first 5 characters.
In other words if $_GET['celebimg'] is 'celeb1.png', I want to set a second variable (let's say $overlay) to string 'celeb1-24_59_250_300.png'
Any idea on how to achieve that?
I could obviously do a switch, but that means I would have to update the code every time a new celeb image is uploaded.
Is there any dynamic way to achieve this?
Thanks
JG
You can try something like this. Since we haven't seen what you have tried so far. This is just an illustration. However the code has been tested.
<?php
$file='celeb3.png'; // Here is where you will get the param $_GET['set1']
$set2=array(
'celeb1-24_59_250_300.png',
'celeb2-35_67_200_250.png',
'celeb3-54_87_300_400.png',
'celeb4-88_98_250_350.png',
'celeb5-87_43_300_400.png'
);
$set1 = explode('.',$file);
//echo $set1[0];//celeb3
foreach($set2 as $val)
{
if($set1[0]==substr($val,0,strlen($set1[0])))
{
echo $val;//celeb3-54_87_300_400.png
break;
}
}
OUTPUT : celeb3-54_87_300_400.png
Use glob to search a folder
//Get the GET variable
$cimg = $_GET['celebimg'];
//split it so we can just get the name without extention
$nameparts = explode(".",$cimg);
//glob will try to find matches to the string passed
$matches = glob("/dir/path/{$nameparts[0]}-*.png");
$matches will be an array of matched files
you could use other file functions like scandir or readdir etc but those do not filter out the files so you would have to do it.
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I have an SMF website and i'm actually trying to get some header information which includes the title of a particular thread, the url but i've been finding it difficult to get the unique link affixed to the url using PHP.
Here's the url: http://example.com/index.php?topic=6449.msg6858
I'm actually looking for a way to extract the number 6449, I've tried to use the php GET function but it doesn't work.
$parts = explode('.', $_GET['topic']);
echo $parts[0];
// PHP 5.4+
echo explode('.', $_GET['topic'])[0];
See it in action
This would work, too
echo (int) $_GET['topic'];
See it in action
You want to use a combination of substr and strpos (to find the first occurence of a period)
$number = substr($_GET['topic'], 0, strpos($_GET['topic'], '.'));
// 6449
$arr = array();
if (preg_match("/([\\d]+)([.]{1}msg[\\d]+)/", $_GET["topic"], $arr) == 1) {
echo $arr[1];
} else {
trigger_error("not found", E_USER_ERROR);
}
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I'm a newbie with PCRE in PHP. I'm trying to make a very basic shortcode function that could make something with a format like this one: {somealphanumericthing}
In essence I need a preg_match_all() that could find in my post these type of occurrences. I tried something like this:
$shortcode = preg_match_all('/^\b\{[a-zA-Z0-9_]+(\}\b)$/', $body, $found);
var_dump($shortcode);
if($shortcode==1) {
for($i=0;$i<count($found);$i++) {
print_r($found);
//do something nice
}
}
But unfortunately it's not working: I get int 0 to the test string {test}
A few things about the regular expression:
You don't need your line anchors since you are searching in a larger string.
There's not need to capture the closing }
Optimization, use the character class \w
Condensed:
/\b\{[a-zA-Z0-9_]+\}\b/
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I am trying to create an CMS-system where I can add photos to my website, and for the photo-part, I want to have the ability to enter which programs I had used to create that photo.
I should be possible to add more than one program.
Right now I am saving the programs in the database like this:
In the programs-row:
photoshop illistrator indesign
Then at my website, it could be nice if the icons/logos of the used programs, could show up next to the photo.
So my question is how to do create a new div, what a new class, based on the words from the programs-row?
Fx:
photoshop illustrator indesign
Becomes to:
<div class="photoshop"></div>
<div class="illustrator"></div>
<div class="indesign"></div>
Hope you guys can help me with this problem :)
Thanks ;)
Use the explode function and a foreach loop to perform the string manipulation.
$programs = explode(" ", $data);
foreach($programs as $value) {
//Echo out the html - $value contains the program name
}
I leave it to you to figure out how to format the program name with the HTML that you need.
$fx = "photoshop illistrator indesign";
$words = explode(" ", $fx);
array_walk($words, function(&$n) {
echo '<div class="'.$n.'"></div>';
});