1. Can read random string
This code creates a readable string that is closer to the word in the dictionary, and is practical and has password validation capabilities.
Copy CodeThe code is as follows:
/**************
* @length-length of random string (must be a multiple of 2)
**************/
function readable_random_string ($length = 6) {
$conso =array ("B", "C", "D", "F", "G", "H", "J", "K", "L",
"M", "N", "P", "R", "s", "T", "V", "w", "X", "Y", "z");
$vocal =array ("A", "E", "I", "O", "U");
$password = "";
Srand (Double) microtime () *1000000);
$max = $length/2;
for ($i =1; $i <= $max; $i + +)
{
$password. = $conso [Rand (0,19)];
$password. = $vocal [Rand (0,4)];
}
return $password;
}
2. Generate a random string
If you do not need a readable string, use this function instead to create a random string, as a random password for the user, and so on.
Copy CodeThe code is as follows:
/*************
*@l-length of random string
*/
function Generate_rand ($l) {
$c = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
Srand (Double) microtime () *1000000);
for ($i =0; $i < $l; $i + +) {
$rand. = $c [Rand ()%strlen ($c)];
}
return $rand;
}
3. Encoded Email Address
With this code, any e-mail address can be encoded as an HTML character entity to prevent it from being collected by the spam program.
Copy CodeThe code is as follows:
function Encode_email ($email = ' info@domain.com ', $linkText = ' contact Us ', $attrs = ' class= ' Emailencoder "')
{
Remplazar Aroba y Puntos
$email = Str_replace (' @ ', ' @ ', $email);
$email = Str_replace ('. ', '. ', $email);
$email = Str_split ($email, 5);
$linkText = Str_replace (' @ ', ' @ ', $linkText);
$linkText = Str_replace ('. ', '. ', $linkText);
$linkText = Str_split ($linkText, 5);
$part 1 = ' $part 2 = ' Ilto: ';
$part 3 = ' "'. $attrs. ' > ';
$part 4 = ";
$encoded = ";
return $encoded;
}
4. Verify your email address
e-mail validation is perhaps the most common form validation in Web pages, which, in addition to verifying e-mail addresses, also has the option of checking the MX records in the DNS that the mail domain belongs to, making the message verification feature more powerful.
Copy CodeThe code is as follows:
function Is_valid_email ($email, $test _mx = False)
{
if (eregi ("^ ([_a-z0-9-]+) (\.[ _a-z0-9-]+) *@ ([a-z0-9-]+) (\.[ a-z0-9-]+) * (\.[ a-z]{2,4}) $ ", $email))
if ($test _mx)
{
List ($username, $domain) = Split ("@", $email);
Return Getmxrr ($domain, $mxrecords);
}
Else
return true;
Else
return false;
}
5. List Contents
Copy CodeThe code is as follows:
function List_files ($dir)
{
if (Is_dir ($dir))
{
if ($handle = Opendir ($dir))
{
while (($file = Readdir ($handle))!== false)
{
if ($file! = "." && $file! = ":" && $file! = "Thumbs.db")
{
Echo '. $file. '
'." \ n ";
}
}
Closedir ($handle);
}
}
}
6. Destroying the Directory
Deletes a directory, including its contents.
Copy CodeThe code is as follows:
/*****
* @dir-directory to destroy
* @virtual [optional]-whether a virtual directory
*/
function Destroydir ($dir, $virtual = False)
{
$ds = Directory_separator;
$dir = $virtual? Realpath ($dir): $dir;
$dir = substr ($dir,-1) = = $ds? substr ($dir, 0,-1): $dir;
if (Is_dir ($dir) && $handle = Opendir ($dir))
{
while ($file = Readdir ($handle))
{
if ($file = = '. ' | | $file = = ' ... ')
{
Continue
}
ElseIf (Is_dir ($dir. $ds. $file))
{
Destroydir ($dir. $ds. $file);
}
Else
{
Unlink ($dir. $ds. $file);
}
}
Closedir ($handle);
RmDir ($dir);
return true;
}
Else
{
return false;
}
}
7. Parsing JSON Data
Like most popular Web services such as Twitter, which provides data through an open API, it is always able to know how to parse the various delivery formats for API data, including Json,xml, and so on.
Copy CodeThe code is as follows:
$json _string= ' {"id": 1, "name": "foo", "email": "foo@foobar.com", "Interest": ["WordPress", "PHP"]} ';
$obj =json_decode ($json _string);
Echo $obj->name; Prints Foo
Echo $obj->interest[1]; Prints PHP
8. Parsing XML Data
Copy CodeThe code is as follows:
XML string
$xml _string= "
Foo
Foo@bar.com
Foobar
Foobar@foo.com
";
Load the XML string using SimpleXML
$xml = simplexml_load_string ($xml _string);
Loop through the each node of the user
foreach ($xml->user as $user)
{
Access attribute
echo $user [' id '], ';
Subnodes is accessed by, operator
echo $user->name, ";
echo $user->email, '
';
}
9. Create a log thumbnail name
Create a user-friendly log thumbnail name.
Copy CodeThe code is as follows:
function Create_slug ($string) {
$slug =preg_replace ('/[^a-za-z0-9-]+/', '-', $string);
return $slug;
}
10. Get the real IP address of the client
The function will get the real IP address of the user, even if he uses a proxy server.
Copy CodeThe code is as follows:
function Getrealipaddr ()
{
if (!emptyempty ($_server[' http_client_ip '))
{
$ip =$_server[' http_client_ip '];
}
ElseIf (!emptyempty ($_server[' http_x_forwarded_for '))
To check IP was pass from proxy
{
$ip =$_server[' http_x_forwarded_for '];
}
Else
{
$ip =$_server[' remote_addr '];
}
return $IP;
}
11. mandatory File Download
To provide users with mandatory file download function.
Copy CodeThe code is as follows:
/********************
* @file-path to File
*/
function Force_download ($file)
{
if ((Isset ($file)) && (File_exists ($file))) {
Header ("Content-length:". FileSize ($file));
Header (' Content-type:application/octet-stream ');
Header (' content-disposition:attachment; Filename= '. $file. '"');
ReadFile ("$file");
} else {
echo "No file selected";
}
}
12. Create a tag cloud
Copy CodeThe code is as follows:
function Getcloud ($data = Array (), $minFontSize = A, $maxFontSize = 30)
{
$minimumCount = Min (array_values ($data));
$maximumCount = Max (Array_values ($data));
$spread = $maximumCount-$minimumCount;
$cloudHTML = ";
$cloudTags = Array ();
$spread = = 0 && $spread = 1;
foreach ($data as $tag = $count)
{
$size = $minFontSize + ($count-$minimumCount)
* ($maxFontSize-$minFontSize)/$spread;
$cloudTags [] = '. ' "href=" # "title=" \ ". $tag.
' \ ' returned a count of '. $count. ' > '
. Htmlspecialchars (Stripslashes ($tag)). '';
}
return join ("\ n", $cloudTags). "\ n";
}
/**************************
Sample usage ***/
$arr = Array (' Actionscript ' = +, ' Adobe ' = ' + ', ' array ' = +, ' Background ' = 43,
' Blur ' +, ' Canvas ' = +, ' Class ' = ', ' Color Palette ' and ' 42 ', ' Crop ',
' Delimiter ' and ' Depth ', ' Design ' = 8, ' Encode ', ' + ', ' encryption ' and ' = 30,
' Extract ', ' Filters ' and ' 42 ';
Echo Getcloud ($arr, 12, 36);
13. Look for the similarity of two strings
PHP provides a minimal use of the Similar_text function, but this function is useful for comparing two strings and returning percentages of similar degrees.
Copy CodeThe code is as follows:
Similar_text ($string 1, $string 2, $percent);
$percent would have the percentage of similarity
14. Using the Gravatar universal avatar in the application
With WordPress becoming more and more popular, Gravatar is also popular with them. Because Gravatar provides an easy-to-use API, it is also very convenient to incorporate it into your application.
Copy CodeThe code is as follows:
/******************
* @email-email address to show Gravatar for
* @size-size of Gravatar
* @default-url of default Gravatar to use
* @rating-rating of Gravatar (G, PG, R, X)
*/
function Show_gravatar ($email, $size, $default, $rating)
{
Echo ' &default= '. $default. ' &size= '. $size. ' &rating= '. $rating. ' width= '. $size. ' px '
Height= "'. $size. ' px '/> ';
}
15. Truncate text at a character breakpoint
The so-called hyphenation (word break), a place where a word can be broken when changing careers. This function truncates the string at the hyphenation point.
Copy CodeThe code is as follows:
Original PHP Code by CHIRP Internet:www.chirp.com.au
Please acknowledge use of the this Code by including the this header.
function Mytruncate ($string, $limit, $break = ".", $pad = "...") {
Return with no change if string is shorter than $limit
if (strlen ($string) <= $limit)
return $string;
is $break present between $limit and the end of the string?
if (false!== ($breakpoint = Strpos ($string, $break, $limit))) {
if ($breakpoint < strlen ($string)-1) {
$string = substr ($string, 0, $breakpoint). $pad;
}
}
return $string;
}
/***** Example ****/
$short _string=mytruncate ($long _string, 100, ");
16. File Zip compression
Copy CodeThe code is as follows:
/* Creates a compressed zip file */
function Create_zip ($files = Array (), $destination = ", $overwrite = False) {
If the zip file already exists and overwrite is false, return false
if (file_exists ($destination) &&! $overwrite) {return false;}
VARs
$valid _files = Array ();
If files were passed in ...
if (Is_array ($files)) {
Cycle through each file
foreach ($files as $file) {
Make sure the file exists
if (file_exists ($file)) {
$valid _files[] = $file;
}
}
}
If we have good files ...
if (count ($valid _files)) {
Create the Archive
$zip = new Ziparchive ();
if ($zip->open ($destination, $overwrite? Ziparchive::overwrite:ziparchive::create)!== true) {
return false;
}
Add the Files
foreach ($valid _files as $file) {
$zip->addfile ($file, $file);
}
Debug
Echo ' The zip archive contains ', $zip->numfiles, ' files with a status of ', $zip->status;
Close the zip--done!
$zip->close ();
Check to make sure the file exists
return file_exists ($destination);
}
Else
{
return false;
}
}
/***** Example Usage ***/
$files =array (' file1.jpg ', ' file2.jpg ', ' file3.gif ');
Create_zip ($files, ' Myzipfile.zip ', true);
17. Unzip the Zip file
Copy CodeThe code is as follows:
/**********************
* @file-path to zip file
* @destination-destination directory for unzipped files
*/
function Unzip_file ($file, $destination) {
Create Object
$zip = new Ziparchive ();
Open Archive
if ($zip->open ($file)!== TRUE) {
Die (' Could not open archive ');
}
Extract contents to destination directory
$zip->extractto ($destination);
Close Archive
$zip->close ();
Echo ' Archive extracted to directory ';
}
18. Preset HTTP strings for URL addresses
Sometimes you need to accept the URL input from some forms, but the user rarely adds the http://field, and this code adds the field to the URL.
Copy CodeThe code is as follows:
if (!preg_match ("/^ (HTTP|FTP):/", $_post[' URL '))) {
$_post[' url '] = ' http://'. $_post[' url '];
}
19. Convert URL strings to hyperlinks
This function converts the URL and e-mail address string into clickable hyperlinks.
Copy CodeThe code is as follows:
function Makeclickablelinks ($text) {
$text = Eregi_replace (' (((f|ht) {1}tp://) [-a-za-z0-9@:%_+.~#?&//=]+] ',
' \1 ', $text);
$text = Eregi_replace (' ([: Space:] () [{}]) (www.[ -a-za-z0-9@:%_+.~#?&//=]+) ',
' \1\2 ', $text);
$text = Eregi_replace (' ([_.0-9a-z-]+@ ([0-9a-z][0-9a-z-]+.)] +[a-z]{2,3}) ',
' \1 ', $text);
return $text;
}
20. Adjust Image size
Creating an image thumbnail takes a lot of time, and this code will help you understand the logic of the thumbnail.
Copy CodeThe code is as follows:
/**********************
* @filename-path to the image
* @tmpname-temporary path to thumbnail
* @xmax-max width
* @ymax-max Height
*/
function Resize_image ($filename, $tmpname, $xmax, $ymax)
{
$ext = Explode (".", $filename);
$ext = $ext [Count ($ext)-1];
if ($ext = = "JPG" | | $ext = = "JPEG")
$im = Imagecreatefromjpeg ($tmpname);
ElseIf ($ext = = "png")
$im = Imagecreatefrompng ($tmpname);
ElseIf ($ext = = "gif")
$im = Imagecreatefromgif ($tmpname);
$x = Imagesx ($im);
$y = Imagesy ($im);
if ($x <= $xmax && $y <= $ymax)
return $im;
if ($x >= $y) {
$newx = $xmax;
$newy = $newx * $y/$x;
}
else {
$newy = $ymax;
$NEWX = $x/$y * $NEWY;
}
$im 2 = Imagecreatetruecolor ($newx, $newy);
Imagecopyresized ($im 2, $im, 0, 0, 0, 0, Floor ($newx), Floor ($newy), $x, $y);
return $im 2;
}
21. Detecting Ajax Requests
Most JavaScript frameworks, such as Jquery,mootools, send additional Http_x_requested_with header information when making AJAX requests, so you can detect AJAX requests on the server side as they are an AJAX request.
Copy CodeThe code is as follows:
if (!emptyempty ($_server[' Http_x_requested_with ')) && strtolower ($_server[' http_x_requested_with ']) = = ' XMLHttpRequest ') {
If AJAX Request Then
}else{
Something else
}
http://www.bkjia.com/PHPjc/321197.html www.bkjia.com true http://www.bkjia.com/PHPjc/321197.html techarticle 1. Can read random string This code creates a readable string that is closer to the word in the dictionary, and is practical and has password validation capabilities. Copy the code code as follows:/**** ...
