search
HomeBackend DevelopmentPHP Tutorialfrename PHP 灵活文件命名函数 frename_php实例

对付这种情况,有的做法是用时间戳对新文件进行重新命名,有的是用序号递增的方法,为了解决麻烦的操作,我在最近编写了一个frename函数,可以灵活依据自定义的规则取得上传文件的新命名,特此分享。

复制代码 代码如下:

function frename($file, $rule='{timestamp}', $force = true) {
/* -----------------------
* author: m35
* date: 2009/8/11
* 依据命名规则取得文件的新命名,以处理上传文件等操作时遇到的文件名已存在的情况
* @parm1 $file -- 文件物理路径
* @parm2 $rule -- 命名规则, 默认为时间戳
* @parm3 $force -- 是否强制命名,如果是强制,就算该目标文件不存在也会对其进行命名,默认强制
* retrun str -- 依据$rule命名的新文件路径
* 示例:
echo '默认规则(时间戳):' . frename(__FILE__);
echo '
序号递增规则:' . frename(__FILE__, '{name}{n}');
echo '
n个前导0的序号递增规则:' . frename(__FILE__, '{name}{5n}');
echo '
用分隔符_并带有3个前导0的序号递增规则:' . frename(__FILE__, '{3n}<_>{name}');
echo '
使用时间日期元素组合的规则:' . frename(__FILE__, '{y}_{m}_{d}_{h}_{i}_{s}');
echo '
使用简写形式的时间日期元素组合的规则:' . frename(__FILE__, '{Y}_{M}_{D}_{H}_{i}_{s}');
echo '
其他自定义组合:' . frename(__FILE__, '{timestamp}_{name}<_>{n}');
----------------------- */
if (!$force && !file_exists($file)) return $file;
$filename = basename($file);
$path = str_replace($filename, '', $file);
$suffix = substr($filename, strrpos($filename, '.'));
$name = str_replace($suffix, '', $filename);
$timestamp = time();
list($y, $Y, $m, $M, $d, $D, $h, $H, $i, $s) = explode(',', date('Y,y,m,n,d,j,h,G,i,s'));
$tempname = str_replace(
array('{name}', '{timestamp}', '{y}', '{Y}', '{m}', '{M}', '{d}', '{D}', '{h}', '{H}', '{i}', '{s}'),
array($name, $timestamp, $y, $Y, $m, $M, $d, $D, $h, $H, $i, $s),
$rule
);
if (preg_match('/\{(\d?)n\}/', $rule, $n)) {
preg_match('/]+)>/', $tempname, $sep);
$file = $path . str_replace(array($n[0], $sep[0]), array('', ''), $tempname) . $suffix;
if (!file_exists($file)) return $file;
$tempname = str_replace($sep[0], $sep[1], $tempname);
$tname = $tempname;
$i = 1;
do {
$nn = sprintf("%0{$n[1]}s", $i);
$tempname = str_replace($n[0], $nn, $tname);
$file = $path . $tempname . $suffix;
}
while (file_exists($file));
return $file;
} else {
$file = $path . $tempname . $suffix;
if (file_exists($file)) return false;
else return $path . $tempname . $suffix;
}
}
echo '默认规则(时间戳):' . frename(__FILE__);
echo '
序号递增规则:' . frename(__FILE__, '{name}{n}');
echo '
n个前导0的序号递增规则:' . frename(__FILE__, '{name}{5n}');
echo '
用分隔符_并带有3个前导0的序号递增规则:' . frename(__FILE__, '{3n}<_>{name}');
echo '
使用时间日期元素组合的规则:' . frename(__FILE__, '{y}_{m}_{d}_{h}_{i}_{s}');
echo '
使用简写形式的时间日期元素组合的规则:' . frename(__FILE__, '{Y}_{M}_{D}_{H}_{i}_{s}');
echo '
其他自定义组合:' . frename(__FILE__, '{timestamp}_{name}<_>{n}');
?>
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
Optimize PHP Code: Reducing Memory Usage & Execution TimeOptimize PHP Code: Reducing Memory Usage & Execution TimeMay 10, 2025 am 12:04 AM

TooptimizePHPcodeforreducedmemoryusageandexecutiontime,followthesesteps:1)Usereferencesinsteadofcopyinglargedatastructurestoreducememoryconsumption.2)LeveragePHP'sbuilt-infunctionslikearray_mapforfasterexecution.3)Implementcachingmechanisms,suchasAPC

PHP Email: Step-by-Step Sending GuidePHP Email: Step-by-Step Sending GuideMay 09, 2025 am 12:14 AM

PHPisusedforsendingemailsduetoitsintegrationwithservermailservicesandexternalSMTPproviders,automatingnotificationsandmarketingcampaigns.1)SetupyourPHPenvironmentwithawebserverandPHP,ensuringthemailfunctionisenabled.2)UseabasicscriptwithPHP'smailfunct

How to Send Email via PHP: Examples & CodeHow to Send Email via PHP: Examples & CodeMay 09, 2025 am 12:13 AM

The best way to send emails is to use the PHPMailer library. 1) Using the mail() function is simple but unreliable, which may cause emails to enter spam or cannot be delivered. 2) PHPMailer provides better control and reliability, and supports HTML mail, attachments and SMTP authentication. 3) Make sure SMTP settings are configured correctly and encryption (such as STARTTLS or SSL/TLS) is used to enhance security. 4) For large amounts of emails, consider using a mail queue system to optimize performance.

Advanced PHP Email: Custom Headers & FeaturesAdvanced PHP Email: Custom Headers & FeaturesMay 09, 2025 am 12:13 AM

CustomheadersandadvancedfeaturesinPHPemailenhancefunctionalityandreliability.1)Customheadersaddmetadatafortrackingandcategorization.2)HTMLemailsallowformattingandinteractivity.3)AttachmentscanbesentusinglibrarieslikePHPMailer.4)SMTPauthenticationimpr

Guide to Sending Emails with PHP & SMTPGuide to Sending Emails with PHP & SMTPMay 09, 2025 am 12:06 AM

Sending mail using PHP and SMTP can be achieved through the PHPMailer library. 1) Install and configure PHPMailer, 2) Set SMTP server details, 3) Define the email content, 4) Send emails and handle errors. Use this method to ensure the reliability and security of emails.

What is the best way to send an email using PHP?What is the best way to send an email using PHP?May 08, 2025 am 12:21 AM

ThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu

Best Practices for Dependency Injection in PHPBest Practices for Dependency Injection in PHPMay 08, 2025 am 12:21 AM

The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.

PHP performance tuning tips and tricksPHP performance tuning tips and tricksMay 08, 2025 am 12:20 AM

PHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Article

Hot Tools

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools