I'm working on a replying system similar to twitters.
In a string there is a piece of text where the id is variable ex.: 14& , 138& depending to who you're replying.
How can I find the 14& in a string and replace it with <u>14&</u>?
This is how it looks:
14& this is a reply to the comment with id 14
This is how it should look like:
<u>14&</u> this is a reply to the comment with id 14
How can I do this in PHP? Thanks in advance!
$text = "14& this is a reply to the comment with id 14";
var_dump(preg_replace("~\d+&~", '<u>$0</u>', $text));
outputs:
string '<u>14&</u> this is a reply to the comment with id 14' (length=52)
To get rid of the &:
preg_replace("~(\d+)&~", '<u>$1</u>', $text)
outputs:
string '<u>14</u> this is a reply to the comment with id 14' (length=51)
$0 or $1 will be the your id. You can replace the markup with anything you like.
for instance a link:
$text = "14& is a reply to the comment with id 14";
var_dump(preg_replace("~(\d+)&~", '<a href="#comment$1">this</a>', $text));
outputs:
string '<a href="#comment14">this</a> is a reply to the comment with id 14' (length=66)
Use regular expressions with the preg_replace function.
<?php
$str = '14& this is a reply to the comment with id 14';
echo preg_replace('(\d+&)', '<u>$0</u>', $str);
The regex matches: one or more digits followed by an ampersand.
If you know the ID, it's simple:
<?php
$tweet_id = '14';
$replaced = str_replace("{$tweet_id}&", "<u>{$tweet_id.}&</u>", $original);
If you don't, preg_replace
<?php
//look for 1+ decimals (0-9) ending with '$' and replaced it with
//original wrapped in <u>
$replaced = preg_replace('/(\d+&)/', '<u>$1</u>', $original);
1& in the beginning. 2& in the middle. 3&followed by a word. And4& preceded by a word. Finally ending with a 5&?