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remove last charcter

Discussion in 'PHP' started by ssimon171078, May 16, 2015.

0
  1. #1
    i have string :
    vasil76|12352 petr0|54323 sidor80|22222 egorf|55555 andrey|78787878 max123|909091 |
    i want to receive string without last character |:
    vasil76|12351 petr0|54323 sidor80|22222 egorf|55555 andrey|78787878 max123|909091
    how can i do this in php ?
     
    ssimon171078, May 16, 2015 IP
  2. Anveto

    Anveto Well-Known Member

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    #2
    Simple with substr

    
substr("vasil76|12352 petr0|54323 sidor80|22222 egorf|55555 andrey|78787878 max123|909091 |", -1);
//You could trim the white space if needed
trim(substr("vasil76|12352 petr0|54323 sidor80|22222 egorf|55555 andrey|78787878 max123|909091 |", -1));
    PHP:
     
    Anveto, May 16, 2015 IP
  3. ThePHPMaster

    ThePHPMaster Well-Known Member

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    #3
    Alternatively you can just use the ltrim function:

    
<?php
rtrim("vasil76|12352 petr0|54323 sidor80|22222 egorf|55555 andrey|78787878 max123|909091 |", " |");
    PHP:
     
    Last edited: May 16, 2015
    ThePHPMaster, May 16, 2015 IP
  4. PoPSiCLe

    PoPSiCLe Illustrious Member

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    #4
    Dunno where you get the string from, but wouldn't the best bet be to make sure the string doesn't contain the last | - I'm assuming this is a concoction of something, adding values to a string (or parsing an array, or something like that) - I'm pretty sure it's possible to avoid that extra space and | at the end, if you just tell us how you make that string.
     
    PoPSiCLe, May 16, 2015 IP
  5. Anveto

    Anveto Well-Known Member

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    #5
    Ah true, looks like a textfile with usernames and passwords
     
    Anveto, May 16, 2015 IP
  6. PoPSiCLe

    PoPSiCLe Illustrious Member

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    #6
    Exactly - fixing something that is inherently broken just adds code - usually fixing the underlying issue is the better bet.
     
    PoPSiCLe, May 16, 2015 IP
  7. ssimon171078

    ssimon171078 Well-Known Member

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    #7
    i have data file :data.txt:
    vasil76|12358
    petr0|54323
    sidor80|22222
    egorf|55555
    andrey|78787878
    max123|909091
    and php script:
    <!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<?php
$Iam = htmlspecialchars($_SERVER["PHP_SELF"]);
$i=0;
$user_password=array();
$user_username=array();
$filename=      "data.txt";
if (file_exists($filename)){
   

$content=file($filename,FILE_IGNORE_NEW_LINES);
foreach($content as $line){
//echo $line.  "<br>";
   $pos=strpos($line,"|");
   $username=substr($line,0,$pos);
   $password=substr($line,$pos+1,strlen($line)-$pos);
//$pos=explode(":",$line);
//$pos2=explode( "|",$line);
  //echo $username;
  $user_username[]= $username;
  $user_password[]=$password;
  }
$user_pass=array_combine($user_username,$user_password);}
else {
    echo "File $filename doesn't exists";
}
  //print_r($user_pass);


  ?>
<div>
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']);?>" method="post">
    <p>
        <label for="userSel">Select user:</label>
        <select id="userSel" name="userSelected">
            <option selected value="">Select user</option>
            <?php
            foreach($user_pass as $key=>$key){
                echo "<option value='".$key."'>".$key."</option>";
            }
            ?>
        </select>
    </p>
    <p>
        <input type="submit" value="Go">
    </p>
</form>
</div>
<div>
    <?php
   
    if(isset($_POST["userSelected"])){
        $nm = trim($_POST["userSelected"]);
        //echo  $nm ;
        if($nm != ""){
            $number = trim($user_pass[$nm]);
            //echo $number;
            $txtErr = "<form action='$Iam' method='post'>";
            $txtErr .= "<p> Name <input name='nm' name='nm' value='" . $nm . "' ></p>";
            $txtErr .= "<p> Number <input type='number' name='number'  step='1' value='" . $number . "'></p>";
           
            $txtErr .= "<p><input type='submit' value='Submit' name='Submit'></p></form>";
        } else {
            $txtErr = "choose name";
        }
    }
   
    ?>
</div>
<div>
    <?php
     echo $txtErr;
    ?>
</div>
<div>
<?php
if (isset($_POST["Submit"])){
        $new_number=trim($_POST["number"]);
echo $new_number;}
   
  $user_pass[$_POST["nm"]]=$new_number;
  //print_r($user_pass);
  foreach($user_pass as $key=>$val){
        $new_content.=$key."|".$val."\r\n";
    }
    //echo $new_content;
 
   $file = fopen($filename,"r+");
    fwrite($file,$new_content);
    rewind($file);
    fclose($file);
  
?>
</div>
  </body>
</html>
    PHP:
    i receive data file :
    vasil76|12350
    petr0|54323
    sidor80|22222
    egorf|55555
    andrey|78787878
    max123|909091

    |
    how to remove last "|" from data file when script wrote to data file ?
     
    ssimon171078, May 17, 2015 IP
  8. Anveto

    Anveto Well-Known Member

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    #8
    You could make sure there is a username or password.

    
foreach($user_pass as $key=>$val){
    if (strlen(trim($key)) > 0 || strlen(trim($val)) > 0) {
        $new_content.=$key."|".$val."\r\n";
    }
}
    PHP:
     
    Anveto, May 17, 2015 IP