PHP - Remove Characters From A String Starting At A Specific Character

Why do I get the following results (specifically the second example)?  I thought it would be documented under https://www.php.net/manual/en/language.types.string.php, however, the word "ampersand" doesn't appear.  Also, looked at logical operators, but found nothing.  Thanks

function test(string $string){
    printf('%s %s %s 0'.PHP_EOL, gettype($string), $string, $string==0?'==':'!=');
}

test('123');
test('@123');
test('1@23');
test('123@');

Quote

string 123 != 0
string @123 == 0
string 1@23 != 0
string 123@ != 0

 

Hi, I believe this is my first post on here. First off let me say thank you for silently helping out in the past while I keep on learning PHP.

I have decided to build an image gallery, and I am having problems with the page numbering links and the breadcrumbs.

Reson I decided to build my own is that I wanted a challange to learn more.
I could not find anything that would intregrate with the site as I wanted it to (pulled as a function so offers some customising with options).

The problem that I am having is that the <a href= tag is starting to give multipul "/"s when I only need one, so that the url at the top is coming up as

http://localhost/mmv4/gallery/pics///Ax/Ax_Jo/

when I am wanting http://localhost/mmv4/gallery/pics/Ax/Ax_Jo/IMG_4244.JPG.

I have used str_replace to catch //s and more, but this then adds odd slashes on the end so the page numbeing is getting odd results. some dirs have the / on the end and some do not, so the links are sometimes "visited" and others not.

I beleve that the problem is generated in
Code: [Select]
<?php
if(isset($_GET['album'])) {
      //load the available dirs into an array so that the sneeky users cannot get further back.
      $files = scandir($gal);
      $dirs = array();
      foreach($files as $file){
         if($file != '.' && $file != '..' && $file != 'thumbs') {
            if(is_dir($gal."/".$file)) {
               $dirs[] = $file;
               //echo $file ."<br />\n";
            }
         }
      }
      
      //if(in_array($_GET['album'],$dirs)) {
         $album = "/".$_GET['album']."/";
         $album = str_replace("..", "", $album);
      //}
      //else {
      //   $output .= "<p>There is no album called \"$_GET[album]\", please select an album from below.</p>";
      //}
   }

or the breadcrumbs bit
Code: [Select]
<?php
if($crumbs == 1) {
      //bread crums
       $path = $gal.$album;
       $path = explode("/", $path);
   
   
       $crumbs = array();
       foreach($path as $key => $value) {
          if($value != ""){
             $crumbs[] = $value;
          }
       }
       // create Breadcrumbs div
   
       $output .= "<div id=\"breadcrumbs\">";
       $number = count($crumbs);
       $real = "";
       foreach($crumbs as $num => $link) {
          if ($link == $gal) {
             $link = "Gallery Home";
          }
          if ($num == $number -1) {
             $output .= $link;
          }
          else{
             if ($num >= 1){
                $real ="";
                for($x=1; $x<=$num; $x++) {
                   $real .= "/".$crumbs[$x];
                }
                $output .= "<a href=\"?album=".str_replace("/", "",$real)."\">".$link."</a>"." <- ";
             }
             else{
                $output .= "<a href=\"?album=".str_replace("/", "",$real)."\">".$link."</a>"." <- ";
             }
          }
          $num +1;
         
       }
   
       //close breadcrumbs div
       $output .= "</div>";
   }

Can any one please help me shed some light on this one, I am confused.
I can send / attach the full source if needed.

MOD EDIT: tags fixed for syntax highlighting . . .

I submit text to my MySQL database using a form on my site. When I look at the text in my database, sometimes, there are strange characters. The strange characters are caused by quotation marks, em dashes, apostrophes and foreign letters of the alphabet. I think that this only happens when the source of the text is a Windows program. I understand that this is a character encoding issue, but I don't fully understand the subject. I've spent the last few hours researching it, but it's only confused me.   My site uses UTF-8 encoding:

<meta http-equiv="content-type" content="text/xml; charset=utf-8" />

The collation of my database is utf8_general_ci.   My form looks like this:

<form action="" method="post">
</form>

As you can see, an accept-charset="utf-8" attribute has not been specified.     Questions   1) I am guessing that my problem is that the Windows characters are being misinterpreted by my UTF-8 setup. Is that correct?   2) If so, is there a way that I can safely convert the Windows characters to UTF-8 during the submission process?   3) Should I also specify an accept-charset="utf-8" attribute on the form?   4) When I paste the Windows text directly into my database without using the form, the characters save without turning into the strange characters. But they don't render properly on my site. Can't browsers identify Windows characters?

Hiya peeps,

I am using preg_match to validate URLS;

preg_match("/(((https?|ftp|gopher):\/\/|(mailto|file|news):)[^' <>\"]+|(www|web|w3).[-a-z0-9.]+)[^' .,;<>\":]/i", $this->_searchString)

I works great, the only issue I have is I am using it in an if statment, and what I need to do is something like this.


if(preg_match("/(((https?|ftp|gopher):\/\/|(mailto|file|news):)[^' <>\"]+|(www|web|w3).[-a-z0-9.]+)[^' .,;<>\":]/i", $this->_searchString)) {
CHECK IF  $this->_searchString has http:// at the start of it or if it has a / at the end and remove them if it does. I need  $this->_searchString to end up with only www.SITE.co.uk before I can input it into the relevant function.
} else {

}


Many thanks,

James.

Hey...

I'm trying to echo the title of the news in the right column but I just want to display maximum of 25 characters how can I do it?

thanks

Hi all,

I have an array of data. I am looping through this data to generate a CSV file. However, if there are commas in any of the elements then this will throw out the structure of the CSV file.

My question is, how do I loop through the array before I use it to strip out any commas and replace with a space?

Thanks for your help.

This topic has been moved to PHP Regex.

http://www.phpfreaks.com/forums/index.php?topic=356719.0

This topic has been moved to PHP Regex.

http://www.phpfreaks.com/forums/index.php?topic=322184.0

What am I doing wrong?


<?PHP
echo preg_replace('#(<td class="results" style="border-width: 0px 0px 1px;">).*?(</td>)#', 'test', $raw_data);
?>


If the contents of $raw_data has:
Code: [Select]
<td class="results" style="border-width: 0px 0px 1px;">THERE IS SOME CONTENT HERE</td>

should it not be replaced as so? :
Code: [Select]
<td class="results" style="border-width: 0px 0px 1px;">test</td>

Hi all! I am building a website, and the users can create a pet name. I only want them to be able to use letters, numbers and underscores in the names. How can I do this? Thanks! I would also be using this for the usernames as well. Here is my pet creation code:
adopt.php:
Code: [Select]
<?php
session_start();
include("config536.php");
?>
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>

<?php
if(!isset($_SESSION['username'])) {
echo "<banner></banner><ubar><a href=login.php>Login</a> or <a href=register.php>Register</a></ubar><content><center><font size=6>Error!</font><br><br>You are not Logged In! Please <a href=login.php>Login</a> or <a href=register.php>Register</a> to Continue!</center></content><content><center><font size=6>Messages</font><br><br></center></content>";
}

if(isset($_SESSION['username'])) {
echo "<banner></banner><nav>$shownavbar</nav><ubar>$ubear</ubar><content><center><font size=6>Adopt a Pet</font><br><br>";

$thedateis = date('F jS, Y');
$getpetid = $_GET['petid'];
$adopt = $_POST['submit'];
$petname = $_POST['petname'];
$petgen = $_POST['gender'];

$thebq = "SELECT * FROM pets WHERE petid='$getpetid'";
$theb = mysql_query($thebq);
while($prr = mysql_fetch_array($theb)) {
$pid = $prr['petid'];
$species = $prr['pname'];
$number = $prr['number'];
}

if(!isset($getpetid)) {
$pq = "SELECT * FROM pets WHERE petid != '0'";
$p = mysql_query($pq);
while($pr = mysql_fetch_array($p)) {
$pid = $pr['petid'];
$ptype = $pr['pname'];
$im = $pr['pimage'];
$number = $pr['number'];
$limited = $pr['limited'];
$types = $pr['types'];

echo "<b>$ptype</b><br><a href=?petid=$pid><img src=/images/pets/$im></a><br>Number: $number<br><br>";
}
}
if(isset($getpetid)) {
?>
<form action="<?php echo "$PHP_SELF"; ?>" method="POST">
Please select a Name: <input type="name" name="petname" maxlength="15"><br>
Pet Gender: <select name="gender"><option value="female">Female</option><option value="male">Male</option><br><br><input type="submit" name="submit" value="Adopt Pet"></form>
<?php
$checkitq = mysql_query("SELECT * FROM userpets WHERE userpetname='$petname'");
$gcheckit = @mysql_num_rows($checkitq);

$tq = "SELECT * FROM users WHERE username='$showusername'";
$t = mysql_query($tq);
while($rw = mysql_fetch_array($t)) {
$grabnum = $rw['pets'];
}
if(isset($adopt)) {
if($grabnum >= "4") {
echo "<font color=red>Error! You already have 4 pets.</font>";
}
if($petname == "") {
echo "<font color=red>Error! Please type in a name for your pet.</font>";
}
if($qcheckit == "1") {
echo "<font color=red>Error! That pet name already exists!</font>";
}
if($gcheckit == "0" && $petname != "" && $grabnum < "4") {
mysql_query("INSERT INTO userpets (owner, userpetname, userpetspecies, userpettype, petdatecreated, gender, strength, defence, health, level, booksread, smart, hunger) VALUES ('$showusername', '$petname', '$species', 'Normal', '$thedateis', '$petgen', '1', '1', '10', '1', '0', 'Normal', 'Full')");
mysql_QUERY("UPDATE users SET pets=pets+1 WHERE username='$showusername'");
echo "<font color=green>Success! Your pet has been created!</font>";
}
}


}
}
?>

</html>
Thanks in advance for the help everyone!!

i have to tables... forums & subscription

i would like to insert a random character string into 'forums' to be used as a subscription id.
and then have the same random string to be inserted into 'subscription'

How can I check this string to see if it has a ~ character using php?

Code: [Select]
$string = 'userlocation~credentials~specialties';

Hey all,

I'm looking to produce a random 10 character string like: abcABC0123 when the below method is called:

<?php

function randomize(){
   $chars = explode(' ',(range("a","z"))) . explode(' ',(range("A","Z"))) . explode(' ',(range("0","9")));
   $pass = "";
   for($i = 0; $i < $len; $i += 1){
      array_push($pass,$chars[rand(count($chars)-1)]);
   }
   return $pass;
}

var_dump(randomize(10));

?>
But the randomize method is not returning desired result. Any idea what I'm doing wrong?

Thanks for response.