Showing posts with label PHP str_replace. Show all posts
Showing posts with label PHP str_replace. Show all posts

Friday, 2 August 2019

How to remove all white spaces within a string using PHP

There are two functions that could be used namely str_replace and  preg_replace.
First, we’ll give an example using str_replace. str_replace is the preferred method since it’s faster and easier to use than preg_replace which relies on regular expressions.
$string =  "This is a test string";
$new_string = str_replace(' ','',$string);
echo $new_string; //This will output Thisisateststring
preg_replace (PHP 4, PHP 5) – http://php.net/manual/en/function.preg-replace.php
$string =  "This is a test string";
$new_string = preg_replace('/( *)/','',$string);
echo $new_string; //This will output Thisisateststring
or
 $string =  "This is a test string";
 $new_string = preg_replace('/\s/','',$string); // \s means strip all white spaces
 echo $new_string; //This will output Thisisateststring

Monday, 24 September 2018

PHP – parse text and convert urls into hyperlinks

The following function will parse a given text and convert all the urls into links. It does this using regular expressions. It converts email addresses to mailto links as well.

Code

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function parse_links($str)
{
    $str = str_replace('www.', 'http://www.', $str);
    $str = preg_replace('|http://([a-zA-Z0-9-./]+)|', '<a href="http://$1">$1</a>', $str);
    $str = preg_replace('/(([a-z0-9+_-]+)(.[a-z0-9+_-]+)*@([a-z0-9-]+.)+[a-z]{2,6})/', '<a href="mailto:$1">$1</a>', $str);
    return $str;
}

Thursday, 30 August 2018

PHP moves the selected files from folder A to folder B

This is a tricky one and I'm not sure where to start, so any help will be grateful.

I have a parent folder called 'source' (c:/dev/source) which contains several child folders.
I need a PHP script that will display the child folders with checkboxes next to each, and a text field for a new folder name, allowing users to tick the checkboxes of the ones they want to copy to a 'destination of c:/dev/destination/the_folder_name_they_typed_in
When they click submit, the selected child folders will be copied from c:/dev/source to c:/dev/destination/the_folder_name_they_typed_in
This is all running on a local internal development server. The child folders will always be in c:/dev/source/
Here's a not well known little bit of code called DirectoryIterator. It's not fully documented on the PHP site, but heres the jist of it:
Create a list of files and folders with checkboxes next to them, slap them all in an array.
$Directory = new RecursiveDirectoryIterator('c:/dev/source');
$Iterator = new RecursiveIteratorIterator($Directory);    

?><form method="post"><?
foreach($Iterator  as $r){

       if($r->isDot()) continue;

       echo "<input type=\"checkbox\" name=\"copy[]\" value=\"".($r->getSubPathName())."\"> ".$r->getSubPathName() . " <br>";

}
?></form><?
Now add this part to the top of the file
<?php
if($_POST){
if(is_array($_POST['copy'])) foreach($_POST['copy'] as $c){
 @copy($c, str_replace('c:/dev/source','c:/dev/dest', $c));
  echo "copied: $c to ". str_replace('c:/dev/source','c:/dev/dest', $c) . "<br>";

}
}
I'm not fully sure what result you get from $r->getSubPathName() can you let me know if it outputs an array? if so it might be that you replace that with $r->getSubPath() and then add the "c:/dev/source" to the variable $c when you copy it?

Further Reading:

PHP - str_replace () with associative array

You can use arrays with str_replace():

$array_from = array ('from1', 'from2');
$array_to = array ('to1', 'to2');

$text = str_replace ($array_from, $array_to, $text);
But what if you have associative array?
$array_from_to = array (
 'from1' => 'to1';
 'from2' => 'to2';
);
How can you use it with str_replace()?
Speed matters - array is big enough.
$text = strtr($text, $array_from_to)
By the way, that is still a one dimensional "array."

Friday, 26 June 2015

PHP: File Upload and View With PHP and MySQL

First of all here i'll show you that how you can upload files using simple html form that sends file to the database through PHP script.

In this tutorial i am going to store file name, file type, and file size.
import the following sql code in your phpmyadmin. Database crediantials.
CREATE DATABASE `dbtuts` ;
CREATE TABLE `dbtuts`.`tbl_uploads` (
`id` INT( 10 ) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`file` VARCHAR( 100 ) NOT NULL ,
`type` VARCHAR( 10 ) NOT NULL ,
`size` INT NOT NULL
) ENGINE = MYISAM ;

Database configuration.
$dbhost = "localhost";
$dbuser = "root";
$dbpass = "";
$dbname = "dbtuts";
mysql_connect($dbhost,$dbuser,$dbpass) or die('cannot connect to the server'); 
mysql_select_db($dbname) or die('database selection problem');

The HTML Form.

index.php
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>File Upload and view With PHP and MySql</title>
</head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="file" />
<button type="submit" name="btn-upload">upload</button>
</form>
</body>
</html>

above html form sends the data to the following PHP script and joining this html and php script you can easily upload files to the database .
upload.php
<?php
if(isset($_POST['btn-upload']))
{    
     
 $file = rand(1000,100000)."-".$_FILES['file']['name'];
    $file_loc = $_FILES['file']['tmp_name'];
 $file_size = $_FILES['file']['size'];
 $file_type = $_FILES['file']['type'];
 $folder="uploads/";
 
 move_uploaded_file($file_loc,$folder.$file);
 $sql="INSERT INTO tbl_uploads(file,type,size) VALUES('$file','$file_type','$file_size')";
 mysql_query($sql); 
}
?>

Display files from MySql.

Now we are going to fetch uploaded files from MySql Database, data selecting from mysql database i hope you know that...
view.php
<table width="80%" border="1">
    <tr>
    <td>File Name</td>
    <td>File Type</td>
    <td>File Size(KB)</td>
    <td>View</td>
    </tr>
    <?php
 $sql="SELECT * FROM tbl_uploads";
 $result_set=mysql_query($sql);
 while($row=mysql_fetch_array($result_set))
 {
  ?>
        <tr>
        <td><?php echo $row['file'] ?></td>
        <td><?php echo $row['type'] ?></td>
        <td><?php echo $row['size'] ?></td>
        <td><a href="uploads/<?php echo $row['file'] ?>" target="_blank">view file</a></td>
        </tr>
        <?php
 }
 ?>
</table>

that's it
Complete script.
dbconfig.php
?<php
$dbhost = "localhost";
$dbuser = "root";
$dbpass = "";
$dbname = "dbtuts";
mysql_connect($dbhost,$dbuser,$dbpass) or die('cannot connect to the server'); 
mysql_select_db($dbname) or die('database selection problem');
?>

index.php
First file with Html form which select the file from client to be upload.
<?php
include_once 'dbconfig.php';
?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>File Uploading With PHP and MySql</title>
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div id="header">
<label>File Uploading With PHP and MySql</label>
</div>
<div id="body">
 <form action="upload.php" method="post" enctype="multipart/form-data">
 <input type="file" name="file" />
 <button type="submit" name="btn-upload">upload</button>
 </form>
    <br /><br />
    <?php
 if(isset($_GET['success']))
 {
  ?>
        <label>File Uploaded Successfully...  <a href="view.php">click here to view file.</a></label>
        <?php
 }
 else if(isset($_GET['fail']))
 {
  ?>
        <label>Problem While File Uploading !</label>
        <?php
 }
 else
 {
  ?>
        <label>Try to upload any files(PDF, DOC, EXE, VIDEO, MP3, ZIP,etc...)</label>
        <?php
 }
 ?>
</div>
<div id="footer">
<label>By <a href="http://cleartuts.blogspot.com">cleartuts.blogspot.com</a></label>
</div>
</body>
</html>

upload.php this is the main PHP Script of this tutorial which uploads the file to the server.
<?php
include_once 'dbconfig.php';
if(isset($_POST['btn-upload']))
{    
     
 $file = rand(1000,100000)."-".$_FILES['file']['name'];
    $file_loc = $_FILES['file']['tmp_name'];
 $file_size = $_FILES['file']['size'];
 $file_type = $_FILES['file']['type'];
 $folder="uploads/";
 
 // new file size in KB
 $new_size = $file_size/1024;  
 // new file size in KB
 
 // make file name in lower case
 $new_file_name = strtolower($file);
 // make file name in lower case
 
 $final_file=str_replace(' ','-',$new_file_name);
 
 if(move_uploaded_file($file_loc,$folder.$final_file))
 {
  $sql="INSERT INTO tbl_uploads(file,type,size) VALUES('$final_file','$file_type','$new_size')";
  mysql_query($sql);
  ?>
  <script>
  alert('successfully uploaded');
        window.location.href='index.php?success';
        </script>
  <?php
 }
 else
 {
  ?>
  <script>
  alert('error while uploading file');
        window.location.href='index.php?fail';
        </script>
  <?php
 }
}
?>

view.php
this file shows the uploaded file from the database.
<?php
include_once 'dbconfig.php';
?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>File Uploading With PHP and MySql</title>
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div id="header">
<label>File Uploading With PHP and MySql</label>
</div>
<div id="body">
 <table width="80%" border="1">
    <tr>
    <th colspan="4">your uploads...<label><a href="index.php">upload new files...</a></label></th>
    </tr>
    <tr>
    <td>File Name</td>
    <td>File Type</td>
    <td>File Size(KB)</td>
    <td>View</td>
    </tr>
    <?php
 $sql="SELECT * FROM tbl_uploads";
 $result_set=mysql_query($sql);
 while($row=mysql_fetch_array($result_set))
 {
  ?>
        <tr>
        <td><?php echo $row['file'] ?></td>
        <td><?php echo $row['type'] ?></td>
        <td><?php echo $row['size'] ?></td>
        <td><a href="uploads/<?php echo $row['file'] ?>" target="_blank">view file</a></td>
        </tr>
        <?php
 }
 ?>
    </table>
    
</div>
</body>
</html>

style.css
and last but not the least stylesheet that makes beautify all the pages.
@charset "utf-8";
/* CSS Document */

*
{
 padding:0;
 margin:0;
}
body
{
 background:#fff;
 font-family:Georgia, "Times New Roman", Times, serif;
 text-align:center;
}
#header
{
 background:#00a2d1;
 width:100%;
 height:50px;
 color:#fff;
 font-size:36px;
 font-family:Verdana, Geneva, sans-serif;
}
#body
{
 margin-top:100px;
}
#body table
{
 margin:0 auto;
 position:relative;
 bottom:50px;
}
table td,th
{
 padding:20px;
 border: solid #9fa8b0 1px;
 border-collapse:collapse;
}
#footer
{
 text-align:center;
 position:absolute;
 left:0;
 right:0;
 margin:0 auto;
 bottom:50px;
}

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