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PHP - Simple String Replace Not Matching Exactly
Hello All,
I've been knocking my head against the wall for several hours trying to figure out what's going on with a simple string replace. For the most part it is working beautifully, but if a string contains a similar but not exact match it still replaces the non match. I was under the impression that str_replace always looks for an exact match. I have custom tags that are in strings of text that are structured like: [A_CUSTOM_HEADER] [A_CUSTOM_TITLE] and so on. They always start with "[A_CUSTOM" and end with a " ] ". In between the start and end can be just about anything. So my problem is if I have [A_CUSTOM] and [A_CUSTOM_TAG] in the same text str_replace seems to incorrectly replace all the [A_CUSTOM_TAG] with the [A_CUSTOM] content and the match never happens for the [A_CUSTOM_TAG] content. For example:
$content = 'Here is some text and [A_CUSTOM]. Here is more text and [A_CUSTOM_TAG]'.
$content = str_replace('[A_CUSTOM]','I have a and custom',$content);
$content = str_replace('[A_CUSTOM_TAG]','I have a, custom and tag',$content);
So running that code The [A_CUSTOM_TAG] content never gets replaced correctly, it is replaced on the first pass with the [A_CUSTOM] replacement content. I hope this make sense I'm trying to explain it the best I can. I tried using preg_replace() with \b to match the whole word but didn't get anything close to the respected results...haha I'm sure I'm missing something simple...or at least I hope I am. Thanks in advance! Edited by Twitch, 22 May 2014 - 11:52 AM. Similar TutorialsThe situation is that I have a large string with some identifiers to say "replace me" with something else. My goal is to replace the values, but if one replacement includes one of the other keys, I don't want to replace it.
For example:
<?php $str = 'some blob ~abc~ followed by ~def~'; $arr_orig = array( '~abc~', '~def~' ); $arr_new = array( 'value~def~', 'blah' ); echo str_replace( $arr_orig, $arr_new, $str ); ?>This will echo: some blob valueblah followed by blah But that's not what I'm trying to accomplish. Basically, I want ~abc~ to be replaced with the literal: value~def~ and for the ~def~ that happens to be part of that string to NOT be replaced. I hope what I'm asking is clear. Basically, preg_replace/str_replace with arrays seems no different than just doing a FOR loop and replacing ~abc~ and then ~def~. But that's not what I need. I'm hoping that if ~abc~ is replaced with text that happens to be another identifier -- ~def~, ~xyz~, whatever -- that this already replaced text is not again replaced. Is there a built-in function to do something like this? If not, should I just parse the whole string and count characters or something? Seems like a pain (and slow!) Hi, and thanks for any help with this.
I have this but of php i have been trying relentlessly to get working.. for over a month.
<?php
$abs="one two three four words";
$mT = "testing for matching words";
$words=explode(' ', $abs);
//$sf=($words);
if (preg_match($words, $mT))
{
echo "the url $mT contains a Word";
}
else
{
echo "the url $mT does Not contain a Word";
echo "$words[4]";
}
?>
You see, I get a responce only using the last line "$words[4]", (obviously, because I am pointing it the Matching word, (ie: with [4]) Edited June 9, 2020 by x1705 better description. I have a web server which contains a public site and a private site. I want to be able to test for public or private using the page title and return the appropriate header which contains a different banner, css etc. Firstly - the syntax below seems to be incorrect because it doesnt work correctly. More importantly how do I add all the values to an array and than iterate through it to check for a matching page title? Code: [Select] public function publicSite() { if ($this->getTitle()== 'Home' || 'About Us'||'Registration' || 'Sitemap' || 'Contact Us' || 'Useful Links' || 'Feedback') { return true; } return false; } Then later on I would have: Code: [Select] if ($this->publicSite()) { require($ROOT.'interface/pages/publicheader.php'); } else { require($ROOT.'interface/pages/privateheader.php'); } Thanks heaps! hello again need some advice cant get it working Code: [Select] SELECT * FROM `tsue_members` WHERE memberid=0 if ($row['memberid'] == '0') { $img = "1.gif"; } echo $img; Hi Guys I'm sure this is really simple for you experts but it's proving to be my nemesis! I have an array of words: eg. $words = array('Apples','Bananas','Cherries'); and would like to search a string of text for these words and create link tags around them based on a simple template, <a href="#">$word_found</a> $text = "I love eating apples and bananas but hate cherries!"; So i would like to return a string like this: $text = "I love eating <a href=#>apples</a> and <a href="#">bananas</a> but hate <a href="#">cherries!</a>"; Now, I need it to do a case insensitive search, but just wrap tags around the words it finds, leaving the case as it was found in the string. I want to avoid using a function where I have to list all the replacements like this: function replace_text($text){ $replace = array('apples' => '<a href="#">apples</a>','bananas' => '<a href="#">bananas</a>'); $text = str_ireplace(array_keys($replace), $replace, $text); return $text; } because it seems very messy and long winded. Also it's not case insensitive. It seems like there must be a way of simply searching for the words in my array and wrapping tags around the found words. Please can anyone help!? Many Thanks Dan Hi - newbie to php - I need to search a string and possibly replace part of it. This is how I would do it in perl: Code: [Select] if ($homepage) { if ($homepage !~ /http/i) { $homepage = "http:\/\/" . $homepage; } } I have a homepage field in the database but sometimes people put the http in, and sometimes they leave it out. In perl I can figure it out and format accordingly but it doesn't work in PHP. I'm not sure if the first line even works in PHP. Maybe if to say something like: if $homepage is not equal to nothing. I'm not sure. Any help would be appreciated. Thanks. How can I replace the comma from a string like this: You, like this => You like this You, Derp, like this => You and Derp like this You, Derp, Derpina, like this => You, Derp and Derpina like this You, Derp, Derpina, Derpson, like this => You, Derp, Derpina and Derpison like this May I please ask one more question? About replacing a string only if it appears *after* a particular string?
I'm having trouble replacing all occurrences of "wheel" with "TIRE" but only when the word "wheel" is after this: (W/
Example:
From this:
A large wheel is shiny.
Big 4 wheel truck (W/ wheel)
Car with a wheel, and a small toy (w/ wheel)
Four wheelers are cool
To this:
A large wheel is shiny.
Big 4 wheel truck (W/ TIRE)
Car with a wheel, and a small toy (w/ TIRE)
Four wheelers are cool
Unfortunately, I thought this worked:
$fixed = str_ireplace('wheel','tire',substr($original_string,stripos($original_string,'(W')));
...until I realized it was *cutting off* all characters up until that first '(W/'
What can be done to make this work?
Edited by Nyla, 20 November 2014 - 09:40 PM. Hi, I am trying to take a string from a database and replace everything within {} with code... similar to how posting in a forum works. so say I have "...Lorem ipsom {gallery:1} sit imet..." it will take that string (from a DB) and replace "{gallery:1}" with "<?php gallery('1'); ?>". How can this be done? Or is there keywords I can search on to find the answer? Thank you in advance. This topic has been moved to PHP Regex. http://www.phpfreaks.com/forums/index.php?topic=319445.0 hey guys just a simple one...im trying to replace {$name} but i dont think ive got the right prefix in the str_replace function...if anyone could tell me where i am going wrong please $content = str_replace("{/$".$variable."}", $value, $content); {$name} I wanted to replace a strings in a large text file .. what would be the fastest way ?! e.g the text file contains .. INSERT INTO `subjects` VALUES (1, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (2, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (3, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (4, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (5, 'some text here', 'some text here', 'some text here'); I wanted to replace the string " VALUES (1, " with "VALUES (" in each line .. I'm new in PHP so any response would be much appreciated .. thanks I embed videos on my site. I submit the embed codes to my database using a form. The codes look like this:
<iframe width="560" height="315" src="//www.youtube.com/embed/xDIgbjDGsOM?rel=0" frameborder="0" allowfullscreen></iframe>Before I submit each code, I have to change its width and height, and I have to add this: &showinfo=0after this: ?rel=0Is there a function that will allow me to do all of that simultaneously? I know about str_ireplace(). It will let me replace ?rel=0 with ?rel=0&showinfo=0, but I don't know how to simultaneously make the other changes. It's not helping that the embed code includes quotation marks. This topic has been moved to PHP Regex. http://www.phpfreaks.com/forums/index.php?topic=321641.0 Hey I have a string that looks like the following: Quote top-php-tutorials-2.html I have a script that cycles through each page. The 2 in the quote above is the page number. How can I extract the number between the - and the .html and replace it with another number? I've tried Code: [Select] substr($engine->selectedcaturl, 0,-6).$v.".html"But then I realised this only works for numbers that are 1 digit long Any input would be appreciated Hi i wrote a find and replace code but my code replace last value of array and skip the first, second.... values in the array. Please give me an idea because i stack with this code. Regards $KeyWord = explode("\n", $RowGetWords['KEYWORDS']); $Replace = explode("\n", $RowGetWords['ReplaceTo']); for($i=0; $i<count($KeyWord); $i++){ $pattern = $KeyWord[$i]; $replace = "<a href=\"" .$URL. "\" target=\"_blank\" >" .$Replace[$i]. "</a>"; $html = str_replace($pattern, $replace, $Row['MessageBody']); } Hi, I am in the procress of creating discussion system however I am a bit puzzled about the best way to go about it. I am starting the discussion by creating an ID number and then match the answer to the initial ID number. However, I dont know whether if is best to put the responses into a different database. I'm a bit puzzled how ID matching systems works. Lets say: Question 1 = ID1 Question 2 = ID2 Question 3 = ID3 Question 1 Answer 1 = ID4 (How is this matched to ID1) Question 2 Answer 1 = ID5 (How is this matched to ID2) is this based on preg_match? Wondering if someone could help me. What I am trying to do is display the information from each row. I am trying to read from 2 tables and display them on a page. I want them to show like this name,make,type, price,"images/listings/a1.jpg,images/listings/a2.jpg,images/listings/a3.jpg,images/listings/a4.jpg,images/listings/a5.jpg,images/listings/a5.jpg" name,make,type, price,"images/listings/b1.jpg,images/listings/b2.jpg,images/listings/b3.jpg,images/listings/b4.jpg,images/listings/b5.jpg,images/listings/b5.jpg" Example. the table structures are as so: Code: [Select] listings -------------------------------- id name make type price (then a couple more columns I dont need data from) -------------------------------- 1 name1 make1 type1 price1 2 name2 make2 type2 price2 3 name3 make3 type3 price3 listimages ---------------------------------------------------- id imagepath mainimage listingid ---------------------------------------------------- 1 images/listings/a1.jpg 1 1 2 images/listings/a2.jpg 0 1 3 images/listings/a3.jpg 0 1 4 images/listings/a4.jpg 0 1 5 images/listings/a5.jpg 0 1 6 images/listings/a6.jpg 0 1 7 images/listings/b1.jpg 1 2 8 images/listings/b2.jpg 0 2 9 images/listings/b3.jpg 0 2 10 images/listings/b4.jpg 0 2 11 images/listings/b5.jpg 0 2 12 images/listings/b6.jpg 0 2 13 images/listings/c1.jpg 1 3 etc Here is the code I am using. Everything works except some of the listing images don't match up to the names. I think when certain names don't have pictures it just moves up the images to the next person. I need to somehow associate the listingid column from listimages table with the id column from the listings table. The mainimage column tells what image of the group of images is default for that name. 1 being the default 0 not the default Here is the code I am using. Code: [Select] <?php // Make a MySQL Connection mysql_connect("localhost", "xxxxxx", "xxxxxx") or die(mysql_error()); mysql_select_db("xxxxxx") or die(mysql_error()); $result = mysql_query("SELECT * FROM listings l JOIN listimages li ON l.id = li.listingid ORDER BY l.id DESC") or die(mysql_error()); $last_listingid = null; $curRow = array(); while($row = mysql_fetch_array($result)) { // Check for a difference in listing ID - and if it is, then we should show the previous row first if ($last_listingid != $row['listingid'] && $last_listingid !== null) { // Implode the array with quotes around it echo $row['name']; echo ","; echo $row['make']; echo ","; echo $row['model']; echo ","; echo $row['type']; echo ","; echo $row['price']; echo ","; echo '"' . implode(',', $curRow) . '"<br />'; // And start fresh $curRow = array(); } // Now we can save it to the array $curRow[] = $row['imagepath']; // And set the new ID $last_listingid = $row['listingid']; } // Finally, we'll need to implode it one last time since there should always be at least one value in the array echo '"' . implode(',', $curRow) . '"'; ?> Please let me know what I am doing wrong Anyone Thanks |
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