Share a complete list of commonly used PHP tools in your own projects, share a complete list of PHP tools

Home

Backend Development

PHP Tutorial

Share a complete list of commonly used PHP tools in your own projects, share a complete list of PHP tools_PHP Tutorial

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jul 12, 2016 am 08:54 AM

php

Php code

Share a complete list of commonly used PHP tools in your own projects, share a complete list of PHP tools_PHP Tutorial

/**
* Helper class
* @author www.shouce.ren
*
*/
class Helper
{
/**
* Determine the current server system
* @return string
*/
public static function getOS(){
if(PATH_SEPARATOR == ':'){
return 'Linux';
}else{
return 'Windows';
}
}
/**
* Current microsecond number
* @return number
*/
public static function microtime_float() {
list ( $usec, $sec ) = explode ( " ", microtime () );
return (( float ) $usec ( float ) $sec);
}
/**
* Cut a string in utf-8 format (one Chinese character or character occupies one byte)
*
* @author zhao jinhan
* @version v1.0.0
*
*/
public static function truncate_utf8_string($string, $length, $etc = '...') {
$result = '';
$string = html_entity_decode ( trim ( strip_tags ( $string ) ), ENT_QUOTES, 'UTF-8' );
$strlen = strlen ( $string );
for($i = 0; (($i $strlen) && ($length > 0)); $i ) {
if ($number = strpos ( str_pad ( decbin ( ord ( substr ( $string, $i, 1 ) ) ), 8, '0', STR_PAD_LEFT ), '0' )) {
if ($length
break;
}
$result .= substr ( $string, $i, $number );
$length -= 1.0;
$i = $number - 1;
} else {
$result .= substr ( $string, $i, 1 );
$length -= 0.5;
}
}
$result = htmlspecialchars ( $result, ENT_QUOTES, 'UTF-8' );
if ($i $strlen) {
$result .= $etc;
}
return $result;
}
/**
* Traverse folders
* @param string $dir
* @param boolean $all true means recursive traversal
* @return array
*/
public static function scanfDir($dir='', $all = false, &$ret = array()){
if ( false !== ($handle = opendir ( $dir ))) {
while ( false !== ($file = readdir ( $handle )) ) {
if (!in_array($file, array('.', '..', '.git', '.gitignore', '.svn', '.htaccess', '.buildpath','.project'))) {
$cur_path = $dir . '/' . $file;
if (is_dir ( $cur_path )) {
$ret['dirs'][] =$cur_path;
$all && self::scanfDir( $cur_path, $all, $ret);
} else {
$ret ['files'] [] = $cur_path;
}
}
}
closedir ( $handle );
}
return $ret;
}
/**
* 邮件发送
* @param string $toemail
* @param string $subject
* @param string $message
* @return boolean
*/
public static function sendMail($toemail = '', $subject = '', $message = '') {
$mailer = Yii::createComponent ( 'application.extensions.mailer.EMailer' );
//Email configuration
$mailer->SetLanguage('zh_cn');
$mailer->Host = Yii::app()->params['emailHost']; //Sending mail server
$mailer->Port = Yii::app()->params['emailPort']; //Mail port
$mailer->Timeout = Yii::app()->params['emailTimeout'];//Email sending timeout
$mailer->ContentType = 'text/html';//Set html format
$mailer->SMTPAuth = true;
$mailer->Username = Yii::app()->params['emailUserName'];
$mailer->Password = Yii::app()->params['emailPassword'];
$mailer->IsSMTP ();
$mailer->From = $mailer->Username; // Sender’s email address
$mailer->FromName = Yii::app()->params['emailFormName']; // Sender’s name
$mailer->AddReplyTo ( $mailer->Username );
$mailer->CharSet = 'UTF-8';
//Add email log
$modelMail = new MailLog ();
$modelMail->accept = $toemail;
$modelMail->subject = $subject;
$modelMail->message = $message;
$modelMail->send_status = 'waiting';
$modelMail->save ();
// 发送邮件
$mailer->AddAddress ( $toemail );
$mailer->Subject = $subject;
$mailer->Body = $message;
if ($mailer->Send () === true) {
$modelMail->times = $modelMail->times 1;
$modelMail->send_status = 'success';
$modelMail->save ();
return true;
} else {
$error = $mailer->ErrorInfo;
$modelMail->times = $modelMail->times 1;
$modelMail->send_status = 'failed';
$modelMail->error = $error;
$modelMail->save ();
return false;
}
}
/**
* Determine whether the string is utf-8 or gb2312
* @param unknown $str
* @param string $default
* @return string
*/
public static function utf8_gb2312($str, $default = 'gb2312')
{
$str = preg_replace("/[x01-x7F] /", "", $str);
if (emptyempty($str)) return $default;
$preg = array(
conditions), this range actually includes Traditional Chinese characters
); if ($default == 'gb2312') {
} else { }
if (!preg_match($preg[$default], $str)) {
return $option;
}
$str = @iconv($default, $option, $str);
//Cannot be converted to $option, indicating that the original one is not $default
empty
$str)) { return $option;
}
return $default; }
/**
* UTF-8 and gb2312 automatic conversion
* @param unknown $string
* @param string $outEncoding
* @return unknown|string
*/
public static function safeEncoding($string,$outEncoding = 'UTF-8')
{
$encoding = "UTF-8";
for($i = 0; $i strlen ( $string ); $i ) {
if (ord ( $string {$i} )
continue;
if ((ord ( $string {$i} ) & 224) == 224) {
// 第一个字节判断通过
$char = $string { $i};
if ((ord ( $char ) & 128) == 128) {
// 第二个字节判断通过
$char = $string { $i};
if ((ord ( $char ) & 128) == 128) {
$encoding = "UTF-8";
break;
}
}
}
if ((ord ( $string {$i}) & 192) == 192) {
$char =
$i};
}
if (strtoupper ( $encoding) ==
$outEncoding))
return
else
return @iconv ($encoding, $outEncoding, $string);
/**
* Returns all values of a key name in the two-dimensional array
* @param input $array * @param string $key * @return array
*/
public static function array_key_values(
array(), $key='')
$ret =
foreach((array)$array as $k=>$v){
$ret[$k] = $v[$key];
} return $ret; }
/**
* Determine whether the file/directory is writable (replacing the system's own is_writeable function)
* @param string $file file/directory
* @return boolean
*/
public static function is_writeable($file) {
if (is_dir($file)){
$dir = $file;
if ($fp = @fopen("$dir/test.txt", 'w')) {
@fclose($fp);
@unlink("$dir/test.txt");
$writeable = 1;
} else {
$writeable = 0;
}
} else {
if ($fp = @fopen($file, 'a ')) {
@fclose($fp);
$writeable = 1;
} else {
$writeable = 0;
}
}
return $writeable;
}
/**
* Formatting unit
*/
static public function byteFormat( $size, $dec = 2 ) {
$a = array ( "B" , "KB" , "MB" , "GB" , "TB" , "PB" );
$pos = 0;
while ( $size >= 1024 ) {
$size /= 1024;
$pos ;
}
return round( $size, $dec ) . " " . $a[$pos];
}
/**
* Drop-down box, radio button automatic selection
*
* @param $string Input characters
* @param $param Conditions
* @param $type Type
* selected checked
* @return string
*/
static public function selected( $string, $param = 1, $type = 'select' ) {
$true = false;
if ( is_array( $param ) ) {
$true = in_array( $string, $param );
}elseif ( $string == $param ) {
$true = true;
}
$return='';
if ( $true )
$return = $type == 'select' ? 'selected="selected"' : 'checked="checked"';
echo $return;
}
/**
* Download remote images
* @param string $url The absolute url of the image
* @param string $filepath The full path of the file (such as /www/images/test). This function will automatically determine the suffix name of the image based on the image URL and http header information
* @param string $filename The name of the file to be saved (excluding extension)
* @return mixed Returns an array describing the image information if the download is successful, false if the download fails
*/
static public function downloadImage($url, $filepath, $filename) {
//Header information returned by the server
$responseHeaders = array();
//Original picture name
$originalfilename = '';
//The suffix name of the picture
$ext = '';
$ch = curl_init($url);
//Set the value returned by curl_exec to include the HTTP header
curl_setopt($ch, CURLOPT_HEADER, 1);
//Set the value returned by curl_exec to include Http content
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//Set the page after crawling jump (http 301, 302)
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
//Set the maximum number of HTTP redirects
curl_setopt($ch, CURLOPT_MAXREDIRS, 3);
//Data returned by the server (including http header information and content)
$html = curl_exec($ch);
//Get relevant information about this crawl
$httpinfo = curl_getinfo($ch);
curl_close($ch);
if ($html !== false) {
// Separate the header and body of the response. Since the server may use 302 jumps, the string needs to be separated into 2 substrings with the number of jumps
//The penultimate paragraph is the http header of the server’s last response
$header = $httpArr[count($httpArr) - 2];
//The penultimate paragraph is the content of the server’s last response
$body = $httpArr[count($httpArr) - 1];
$header.="rn";
//Get the header information of the last response
preg_match_all('/([a-z0-9-_] ):s*([^rn] )rn/i', $header, $matches);
if (!emptyempty($matches) && count($matches) == 3 && !emptyempty( $matches[1]) && !emptyempty($matches[1])) {
for ($i = 0; $i count($matches[1]); $i ) {
if (array_key_exists($i, $matches[2])) {
$responseHeaders[$matches[1][$i]] = $matches[2][$i]; >
if (0 '{(?:[^/\\] ).(jpg|jpeg|gif|png|bmp)$}i',
$url ,
$originalfilename = $matches[0]; $ext =
} else {
if (array_key_exists('Content-Type',
i', $responseHeaders['Content-Type'], $extmatches)) {
empty
$ext)) {
//If the directory does not exist, you must create the directory first if(!is_dir(
mkdir($filepath, 0777, true);
$filepath .= '/'.$filename.".$ext";
$local_file = fopen($filepath, 'w');
fclose($local_file); ,
$sizeinfo[1], 'orginalfilename' => >$filepath, PATHINFO_BASENAME));
} return false; }
/**
* Find if the IP is in a certain rank
* @param string $ip The IP to be queried
* @param $arrIP Banned ip
* @return boolean
*/
public static function ipAccess($ip='0.0.0.0', $arrIP = array()){
$access = true;
$ip && $arr_cur_ip = explode('.', $ip);
foreach((array)$arrIP as $key=> $value){
if($value == '*.*.*.*'){
$access = false; //禁止所有
break;
}
$tmp_arr = explode('.', $value);
if(($arr_cur_ip[0] == $tmp_arr[0]) && ($arr_cur_ip[1] == $tmp_arr[1])) {
//前两段相同
if(($arr_cur_ip[2] == $tmp_arr[2]) || ($tmp_arr[2] == '*')){
//第三段为* 或者相同
if(($arr_cur_ip[3] == $tmp_arr[3]) || ($tmp_arr[3] == '*')){
//第四段为* 或者相同
$access = false; //在禁止ip列，则禁止访问
break;
}
}
return $access;
/**
* @param string $string Original text or cipher text
* @param string $operation operation (ENCODE | DECODE), the default is DECODE
* @param string $key key
* @param int $expiry Ciphertext validity period, valid when encrypted, unit seconds, 0 means permanent validity
* @return string The processed original text or the cipher text processed by base64_encode
*
* @example
*
* $a = authcode('abc', 'ENCODE', 'key');
* $b = authcode($a, 'DECODE', 'key'); // $b(abc)
*
* $a = authcode('abc', 'ENCODE', 'key', 3600);

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

What is the difference between unset() and session_destroy()?May 04, 2025 am 12:19 AM

Thedifferencebetweenunset()andsession_destroy()isthatunset()clearsspecificsessionvariableswhilekeepingthesessionactive,whereassession_destroy()terminatestheentiresession.1)Useunset()toremovespecificsessionvariableswithoutaffectingthesession'soveralls

What is sticky sessions (session affinity) in the context of load balancing?May 04, 2025 am 12:16 AM

Stickysessionsensureuserrequestsareroutedtothesameserverforsessiondataconsistency.1)SessionIdentificationassignsuserstoserversusingcookiesorURLmodifications.2)ConsistentRoutingdirectssubsequentrequeststothesameserver.3)LoadBalancingdistributesnewuser

What are the different session save handlers available in PHP?May 04, 2025 am 12:14 AM

PHPoffersvarioussessionsavehandlers:1)Files:Default,simplebutmaybottleneckonhigh-trafficsites.2)Memcached:High-performance,idealforspeed-criticalapplications.3)Redis:SimilartoMemcached,withaddedpersistence.4)Databases:Offerscontrol,usefulforintegrati

What is a session in PHP, and why are they used?May 04, 2025 am 12:12 AM

Session in PHP is a mechanism for saving user data on the server side to maintain state between multiple requests. Specifically, 1) the session is started by the session_start() function, and data is stored and read through the $_SESSION super global array; 2) the session data is stored in the server's temporary files by default, but can be optimized through database or memory storage; 3) the session can be used to realize user login status tracking and shopping cart management functions; 4) Pay attention to the secure transmission and performance optimization of the session to ensure the security and efficiency of the application.

Explain the lifecycle of a PHP session.May 04, 2025 am 12:04 AM

PHPsessionsstartwithsession_start(),whichgeneratesauniqueIDandcreatesaserverfile;theypersistacrossrequestsandcanbemanuallyendedwithsession_destroy().1)Sessionsbeginwhensession_start()iscalled,creatingauniqueIDandserverfile.2)Theycontinueasdataisloade

What is the difference between absolute and idle session timeouts?May 03, 2025 am 12:21 AM

Absolute session timeout starts at the time of session creation, while an idle session timeout starts at the time of user's no operation. Absolute session timeout is suitable for scenarios where strict control of the session life cycle is required, such as financial applications; idle session timeout is suitable for applications that want users to keep their session active for a long time, such as social media.

What steps would you take if sessions aren't working on your server?May 03, 2025 am 12:19 AM

The server session failure can be solved through the following steps: 1. Check the server configuration to ensure that the session is set correctly. 2. Verify client cookies, confirm that the browser supports it and send it correctly. 3. Check session storage services, such as Redis, to ensure that they are running normally. 4. Review the application code to ensure the correct session logic. Through these steps, conversation problems can be effectively diagnosed and repaired and user experience can be improved.

What is the significance of the session_start() function?May 03, 2025 am 12:18 AM

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

How to fix KB5055523 fails to install in Windows 11?

3 weeks agoByDDD

How to fix KB5055518 fails to install in Windows 10?

3 weeks agoByDDD

Strength Levels for Every Enemy & Monster in R.E.P.O.

3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Roblox: Dead Rails - How To Tame Wolves

3 weeks agoByDDD

Blue Prince: How To Get To The Basement

3 weeks agoByDDD

Hot Tools

WebStorm Mac version

Useful JavaScript development tools

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.