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PHP - String Search/replace But Don't Replace Things That Were Already Replaced
The 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!) Similar TutorialsHi 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 $homepage is not equal to nothing. I'm not sure. Any help would be appreciated. Thanks. How can I replace the comma from a string like this: You, like this => You like this You, Derp, like this => You and Derp like this You, Derp, Derpina, like this => You, Derp and Derpina like this You, Derp, Derpina, Derpson, like this => You, Derp, Derpina and Derpison like this hello again need some advice cant get it working Code: [Select] SELECT * FROM `tsue_members` WHERE memberid=0 if ($row['memberid'] == '0') { $img = "1.gif"; } echo $img; $file=str_replace("{title2}",$line['title'],$file); $file['title2'] = trim(preg_replace('/[^\w\d]+/', ' ', $file['title2'])); $file['title2'] = str_replace(' ', '-', $file['title2']); The first line does what it should do, have {title2} in the template generate the page title. The next two lines don't do the replacing. I have a number of records of the html sections of a series of Google Earth placemarks that I managed to extract from the raw kml file. The purpose of the exersize was to then use the simplehtmldom.php api to extract the DATA from the raw html code. Some of the process is going well... and some is NOT. I have found that if I modify the raw html code by entering ID attributes into the html code the simplehtmldom api has an easy time identifying the desired data, and the data can be far 'cleaner' by entering an id attribute as 'close' to the data as possible. But doing a php text search and replace often requires finding a 'unique' identifyable portion of the html code and THEN placing the 'id' attribute in a nearby html tag because the desired data is nested inside a non-unique tag. As in I can identify a SPECIFIC <td> tag section where the data i desire is located but the data is nested inside a <font> tag inside the <td> cluster. Hence my problem... If I do a search in the following code... Code: [Select] <td><b><font size="+2" color="#FF0000">Neighborhood:</font> <font size="+2" color="#0000FF">City of Sidney</font></b></td> I can locate the 'Neighborhood:' string because it is unique in the whole html code. Then by some charcter counting I am desiring to put my 'id' attribute in the NEXT font tag because it surrounds the desired data the 'City of Sidney'... as in... Code: [Select] <td><b><font size="+2" color="#FF0000">Neighborhood:</font> <font id="neighborhood" size="+2" color="#0000FF">City of Sidney</font></b></td> With this modification the desired data is easily found and cleanly produced. But the html code while all operating correctly in a web page is not all identicle from a 'whitespace' point of view AND thus my problem. If I search the following code... Code: [Select] <td> <b><font size="+2" color="#FF0000">Neighboorhood:</font> <font size="+2" color="#0000FF">Greenacre</font></b> </td> While being identical as far as html is concerned if I search this code for the 'Neighboorhood:' identifier I find it... but then attempting to place the id tag into the NEXT font tag is being problematic. What i seem to need is a function that once the 'Neighboorhood:' string position is identied and noted in the whole of the html code, to FIND and modify the NEXT occurance of a font tag no matter what whitespace (or special charachters) may be occuring. Any suggestions?? eatc7402 I can' t even get the simple str_replace to work. I got.... $rslt = $client->getTodaySubIDStats($key, $sub_id); $rslt = str_replace("EARNINGS",'',$rslt); $rslt = str_replace("Array","",$rslt); $rslt = str_replace("\r","",$rslt); $rslt = str_replace("\n","",$rslt); $rslt = str_replace("\t","",$rslt); print_r($rslt); which spits out.... Code: [Select] Array ( [0] => Array ( [EARNINGS] => $100.40 [CLICKS] => 1301 [LEADS] => 100 [SUB_ID] => yacker [EPC] => $0.11 ) ) I would like to have every thing removed except the '$100.40' (The number is always changing). Then remove the $ and do math 100.40*.40, so in the end, all it spits out is 40.16 and always only have two digits after the period. 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 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. 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, $Row['MessageBody']); } I wanted to replace a strings in a large text file .. what would be the fastest way ?! e.g the text file contains .. INSERT INTO `subjects` VALUES (1, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (2, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (3, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (4, 'some text here', 'some text here', 'some text here'); INSERT INTO `subjects` VALUES (5, 'some text here', 'some text here', 'some text here'); I wanted to replace the string " VALUES (1, " with "VALUES (" in each line .. I'm new in PHP so any response would be much appreciated .. thanks I embed videos on my site. I submit the embed codes to my database using a form. The codes look like this:
<iframe width="560" height="315" src="//www.youtube.com/embed/xDIgbjDGsOM?rel=0" frameborder="0" allowfullscreen></iframe>Before I submit each code, I have to change its width and height, and I have to add this: &showinfo=0after this: ?rel=0Is there a function that will allow me to do all of that simultaneously? I know about str_ireplace(). It will let me replace ?rel=0 with ?rel=0&showinfo=0, but I don't know how to simultaneously make the other changes. It's not helping that the embed code includes quotation marks. hey guys just a simple one...im trying to replace {$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} Hi everyone!! I just started learning PHP two weeks ago and I hope someone can help me!! I need to do a find and replace on a string, and each replace needs to have an unique id, and if that unique id exists in a table then return the value on the table. Make sense? So like "find all the Xs in the string, replace with "X1, X2, X3...", then if "X3' exists on TableB, return value "X3 is on the table and has a value of Y3". I actually got this to work already but it takes a long time to do it so I'm hoping someone could give me some advice on how to make it more EFFICIENT: // PART ONE, find all "X" and replace with unique_id for ($count = 1; $count <= strlen($string); $count++) // do this loop as many times as there are characters in $string { $unique_id = "replacement_" . $count; // give each replacement an unique id (replacement_1, replacement_2, replacement_3, etc..) $string = preg_replace("X", $unique_id, $string , 1); // find X and replace it with the $unique_id in $string, and only do this ONCE } $count_replacements = substr_count($string,"replacement_"); // count how many replacements occured in total // PART TWO, find all unique_ids in tableB and echo the unique_id_value for ($count = 1; $count <= $count_replacements; $count++) // do this loop as many times as there were replacements { $unique_id = "replacement_" . $count; // set the unique_id of each replacement $show_tableB = mysqli_query($link, 'SELECT * FROM tableB'); // select the unique_ids and the unique_id_values in TableB while ($row = mysqli_fetch_array($show_tableB)) { $tableBs[] = array('unique_id' => $row['unique_id'], 'unique_id_value' => $row['unique_id_value']); } foreach($tableBs as $tableB): // for each entry in TableB, if the unique_id in TableB matches the unique_id of the replacement, return the unique_id_value if ($tableB['unique_id'] == $unique_id) { echo $unique_id . " is on TableB and it has a value of ". $tableB['unique_id_value'] } endforeach; } The problem with this is: its not very efficient. If $string has 500 charachters, it does the "PART ONE" 500 times. Then, say it found 300 Xs, it does "PART TWO" 300 more times. And every time it does "PART TWO", it checks all entries in TableB (which could be 200 or more). So, that's it. Anyone has a better idea of how to do this?? Thanks!!!! I' stuck with writing function for searching replaced numbers and would really appreciate if someone can tell me what I'm doing wrong.
My table structure looks like:
CREATE TABLE servis.zamjene_brojeva ( id INT(11) NOT NULL AUTO_INCREMENT, vrijeme TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, pocetni_broj VARCHAR(55) DEFAULT NULL, zamjenski_broj VARCHAR(55) DEFAULT NULL, glavni_broj VARCHAR(55) DEFAULT NULL, postoji_zamjena INT(1) DEFAULT NULL, PRIMARY KEY (id) )My function looks like this:
//funkcija za traženje zamjene brojeva
function zamjena_broja($kataloski_broj){
//Traženje zamjenskog broja
$upit_zamjena = "SELECT pocetni_broj, zamjenski_broj, glavni_broj
FROM zamjene_brojeva
WHERE glavni_broj = '$kataloski_broj'";
$rezultat_zamjena = mysql_query($upit_zamjena) or die (mysql_error());
$row = mysql_fetch_array($rezultat_zamjena);
$kataloski_broj = $row["zamjenski_broj"];
$broj_zamjena = mysql_num_rows($rezultat_zamjena);
return $kataloski_broj;
//Traženje druge zamjene broja
if ($broj_zamjena <> 0) {
$upit_zamjena = "SELECT pocetni_broj, zamjenski_broj, glavni_broj
FROM zamjene_brojeva
WHERE pocetni_broj = '$kataloski_broj'";
$rezultat_zamjena = mysql_query($upit_zamjena) or die (mysql_error());
$broj_zamjena2 = mysql_num_rows($rezultat_zamjena);
$row2 = mysql_fetch_array($rezultat_zamjena);
$kataloski_broj = $row2["zamjenski_broj"];
return $kataloski_broj;
//Traženje treće zamjene
if ($broj_zamjena2 <> 0) {
$upit_zamjena = "SELECT pocetni_broj, zamjenski_broj, glavni_broj
FROM zamjene_brojeva
WHERE pocetni_broj = '$kataloski_broj'";
$rezultat_zamjena = mysql_query($upit_zamjena) or die (mysql_error());
$broj_zamjena3 = mysql_num_rows($rezultat_zamjena);
$row3 = mysql_fetch_array($rezultat_zamjena);
$kataloski_broj = $row3["zamjenski_broj"];
return $kataloski_broj;
}
}
}
In pocetni_broj is old number and in glavni_broj is new number. But it can happen that number in glavni_broj is old and I need to search in pocetni_broj to see if there is even newer number and it can happen 5 or 6 times like that.
I need to find all the numbers that are connected, but I'm not getting that. What am I doing wrong?
Hey I have a string that looks like the following: Quote top-php-tutorials-2.html I have a script that cycles through each page. The 2 in the quote above is the page number. How can I extract the number between the - and the .html and replace it with another number? I've tried Code: [Select] substr($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 alright, is this the correct format for a REPLACE INTO? if not what do i need to change.......it isn't working...... Code: [Select] $sql = "REPLACE INTO Events (name, event, eventid, userid, title1, title2, title3, title4, title5, title6, title7, title8, email) VALUES('$name','$event','$eventid','$userid','$title1','$title2','$title3','$title4','$title5','$title6','$title7','$title8', '$email')"; $rs = mysql_query($sql) or die ("Problem with the query: $sql<br>" . mysql_error()); Hello: I have a quick question. I am currently using the following code to replace an apostrophe and quote marks when inserting and updating a database record: Code: [Select] $myPageContent = mysql_real_escape_string(str_replace("'", "'", $_POST['myPageContent'])); $myPageContent = mysql_real_escape_string(str_replace("", """, $_POST['myPageContent'])); My question is - how can I modify it so I only need to use one line. Like (but this does not work): Code: [Select] $myPageContent = mysql_real_escape_string(str_replace("'", "'", "", """, $_POST['myPageContent'])); It seems to me that the way I am currently doing it might be POSTing the data twice? Thanks! |
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