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PHP - Various Issues With Backslashes And Replacing Strings
I recently fixed a bug in my own website involving preg_replace, the thing is, each time I was editing an article in the front-end, preg_replace would be called on the HTML to replace certain HTML elements.
$html = '<div>REPLACEMENT_ID</div>';
$replacement_id = 'REPLACEMENT_ID';
$replacement = addslashes('<pre>\\\\</pre>');
// $html = preg_replace("|{$replacement_id}|", $replacement, $html);
// $html = str_replace($replacement_id, $replacement, $html);
$pos = strpos($html, $replacement_id);
if ($pos !== false) {
$html = substr_replace($html, $replacement, $pos, strlen($replacement_id));
}
print_r($html);
Similar TutorialsHi there! i get_file_contents from a .txt file. For example if I typed "don't" Don\'t would be displayed. Why is this? Thanks Good day freaks. I am pulling my hair out trying to figure this out. I am trying to pass patterns for preg_replace through $_GET and then apply them. The object is to highlight certain words in a chunk of text. Say I want to highlight bounded cases of 'foo' in the text. So here's what I'm doing: Code: [Select] $string = urldecode($_GET['highlight1']); // $string contains \\bfoo\\b $search = preg_replace('/\\\\b/','b',$string); // $search contains \bfoo\b as I want it to $replace = preg_replace('/\\\\b/','',$string); // $replace contains \foo\ >:-( $pattern = '/'.$search.'/i'; $text = preg_replace($pattern,'<span style="background-color:yellow;">'.$replace.'</span>',$text); The problem is that no matter what I try for the pattern for $replace, it winds up with backslashes around foo. How do I get rid of these? (I should say that I discovered the pattern/replace for the $search string by experimentation and I don't understand why the pattern doesn't pick off all the backslashes in that case--but at least it does what I want). TIA Steve Please help. I am trying to replace parenthesises () in a string with <>. I tried preg_replace and str_replace, but was not success. Here is what I have for str_replace: $word = "(test)"; $word = str_replace('(', '<', $word); $word = str_replace(array('(', ')'), array('<','>'), $word); Hey all, i need a function or a way to replace each letter in a string to a star (*) Thanks hi freaks, still working on my email bot. im currently trying to escape <>-tags to be displayed- but not the browser wont exectute it (i.e. xls-tags) i want them as chars. so whin my $content is like <xsl:stylesheet> <xsl:template match="/"> <more xls...> it shows a stylesheet. i just want the chars. Here is what ive been trying so far: but its bad Code: [Select] <?php $string='<tag> > < asdasf'; $bomb=array( '<', '>', ); $defusal=array( '-', '!', ); $string= preg_replace($bomb,$defusal,$string); echo $string; ?> error: Warning: preg_replace() [function.preg-replace]: No ending matching delimiter '>' found in C:\xampp1\htdocs\code.php on line 13 donno any further now How come this is not replacing correctly? $rp = strtr($rp,"[TIMES]","<span style='font-family: Times New Roman, Times, serif'>") Hello, Is str_replace the best way to go about this? In MYSQL, a html template is stored, such that: Quote <table width="{$width}">lots of other ........</table> This is extract from the database, and stored in a string. I would use eval(), but, any user can update this template, so I need to be able to set which variables will be replaced with what the variable is. Thanks! Hey guys, I have a quick question. Im going to be making a script that will output the name of a news article along with the poster's name beside it. There is only a certain amount of space where that stuff can go so I want to know how I can make it so that say after 20 characters, it ends and puts "..." beside it. Is this possible with php? How would I do it? I want to be able to replace, let's say, every fifth letter from a string. The string is unknown, though, it could come from database, or a POST form. So I'm unsure if I could use str_replace. I think I may need to use preg_replace(), but I'm not not sure. Ok mixing javascript with php.... im having bugs . I basically want to replace any broken image links with a picture "noimage.gif" in the images folder. I tried this code but am getting the error: Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /home/wormste1/public_html/tilburywebdesign/shop/FTPServers/barryottley/showroom.php on line 78 This is the javascript header - all seems fine: <script language="JavaScript" type="text/javascript"> function ImgError(source){ source.src = "/images/noimage.gif"; source.onerror = ""; return true; } </script> this is the code thats erroring... is it the way ive written in the code into the IMG tag? while($row = mysql_fetch_array($result)){ echo "<TABLE CELLPADDING=0 CELLSPACING=0 WIDTH=100% BORDER=0>"; echo "<TR />"; echo "<TD WIDTH=30% VALIGN=TOP />"; echo " <A HREF='images/".$row['photo']."' target=_blank><IMG SRC='images/".$row['photo']."' width=186 height=155 border=0 onerror="ImgError(this);" /></A> "; echo "<br />"; echo "</TD>"; echo "<TD WIDTH=10 VALIGN=TOP />"; Hi I wonder if anyone will be kind enough to help. I am getting into forking with pcntl_fork() I intend to create a script that runs 24/7 running 100 forks/children/'threads' simultaneously. Once a child has finished it's task and exited how can I start a new child to replace it? I need some kind of infinite loop that can continually check for exited children and set up new ones. I'm finding it hard to get my head round since I'm new to forking. Can anyone suggest a way to do this? Thanks in advance. I have phrases in a string with the structure of "Note: some description" I want to replace "Note with (, but how can I replace the second " with )? Hello, I have been trying to replace a variable's value inside a function in case it matches a certain criteria but I can't seem to get it right. Let me give an example: Code: [Select] <?php function replace_value($obj) { if($obj==1) { $obj=2; } } $number = 1; replace_value($number); echo $number; So how do I go about making $number = 2, because it still has a value of 1 even after I pas it through the function replace_value. If this were an example post in a forum: Code: [Select] $post = '[quote author=james]hello this is a quote[/quote] here is some mor text between the next coming quote [quote author=david]hello this is another quote[/quote]'; What is the best way to replace the [quotes author=x] with opening html tag eg: Code: [Select] <div class="quote"><div class="quoteTitle">author=x</div> And then determine if the next is a [/quote ] is an opener or close quote? And then of course there is the issue of the user deleting a [/quote] or even placing a [/quote] before an open quote... Does anyone know of an example to look at? //$x = ereg_replace('[-a-z0-9!#$%&\'*+/=?^_`{|}~]+@([.]?[a-zA-Z0-9_/-])*','<a href=\'mailto:\\0\' '.$style.'>\\0</a>',$x); Hi Guys, I use this function to generate seo friendly names for my products once pulled from the database: function generate_seo_friendly_links($pNM, $pID) { $replacedNM = str_replace(" ", "-", $pNM); $replacedNM = rtrim($replacedNM); $brandNewSEOFriendlyURL = "<a href='$replacedNM-$pID.html'>$pNM</a>"; return $brandNewSEOFriendlyURL; } This works great, the only thing is say a product is stored in the database like: product name it would then be converted to: product-name.html if for example theres 2 spaces: product name it would then be converted to: product--name.html with the 2 "--" so for every space it finds we replace with a "-" etc is there a way i could ignore more than 1 space and always have it like product-name-here.html so the names are more uniformed, i can't think of a way to do it. any help would be appreciated thanks guys Graham Hi first post here and very new to php. I built a form so that a data entry perosn can "build" new pages for our companies website. I pretty much have the basics of the form and the action page coded correctly, however my issue is that I need this final page where the form inputs are posted too to be an html document. I read some about the str_replace() function, but I'm not understanding how I could use that to replace the file extension of a page. Maybe I'm going about this all wrong. I also read that one can edit the htaccess folder to allow an html file to run php script. Not sure which way would be the best. One thing to mention though, is this application would be run locally to our back up files which is then scheduled to be uploaded to the remote server very night. Any help or suggestions would be greatly appreciated. hi, i have an article with several paragraphs. However i would like the first paragraph to be converted into a header. string replacement will not work as it will replace all the p tags. i just want the 1st set of p tags to be replaced. can anyone help? thanks Hi, I have 2 arrays, named $old_teams1 and $old_teams2. The arrays have from 6 values upwards. If $old_teams1 looks like this: Code: [Select] Array ( [0] => 3 [1] => 4 [2] => 3 [3] => 4 [4] => 1 [5] => 2 ) and $old_teams2 is the has the same mixture of values from 1-4..... .. How do I create a loop that will change all values of $old_teams1 and $old_teams2 to new values such as, 1->3, 2->4, 3->1, 4->2.... (The new values have been randomly generated). |
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