这篇文章主要介绍了php发送邮件的示例,并可以发送带附件的邮件,大家参考使用吧
emailclass.php 代码如下: class CMailFile { var $subject; var $addr_to; var $text_body; var $text_encoded; var $mime_headers; var $mime_boundary = "--==================_846811060==_"; var $smtp_headers; function CMailFile($subject,$to,$from,$msg,$filename,$downfilename,$mimetype = "application/octet-stream",$mime_filename = false) { $this->subject = $subject; $this->addr_to = $to; $this->smtp_headers = $this->write_smtpheaders($from); $this->text_body = $this->write_body($msg); $this->text_encoded = $this->attach_file($filename,$downfilename,$mimetype,$mime_filename); $this->mime_headers = $this->write_mimeheaders($filename, $mime_filename); } function attach_file($filename,$downfilename,$mimetype,$mime_filename) { $encoded = $this->encode_file($filename); if ($mime_filename) $filename = $mime_filename; $out = "--" . $this->mime_boundary . "\n"; $out = $out . "Content-type: " . $mimetype . "; name=\"$filename\";\n"; $out = $out . "Content-Transfer-Encoding: base64\n"; $out = $out . "Content-disposition: attachment; filename=\"$downfilename\"\n\n"; $out = $out . $encoded . "\n"; $out = $out . "--" . $this->mime_boundary . "--" . "\n"; return $out; } function encode_file($sourcefile) { if (is_readable($sourcefile)) { $fd = fopen($sourcefile, "r"); $contents = fread($fd, filesize($sourcefile)); $encoded = chunk_split(base64_encode($contents)); fclose($fd); } return $encoded; } function sendfile() { $headers = $this->smtp_headers . $this->mime_headers; $message = $this->text_body . $this->text_encoded; mail($this->addr_to,$this->subject,$message,$headers); } www.jbxue.com function write_body($msgtext) { $out = "--" . $this->mime_boundary . "\n"; $out = $out . "Content-Type: text/plain; charset=\"us-ascii\"\n\n"; $out = $out . $msgtext . "\n"; return $out; } function write_mimeheaders($filename, $mime_filename) { if ($mime_filename) $filename = $mime_filename; $out = "MIME-version: 1.0\n"; $out = $out . "Content-type: multipart/mixed; "; $out = $out . "boundary=\"$this->mime_boundary\"\n"; $out = $out . "Content-transfer-encoding: 7BIT\n"; $out = $out . "X-attachments: $filename;\n\n"; return $out; } function write_smtpheaders($addr_from) { $out = "From: $addr_from\n"; $out = $out . "Reply-To: $addr_from\n"; $out = $out . "X-Mailer: PHP3\n"; $out = $out . "X-Sender: $addr_from\n"; return $out; } } /*用法 - 例如:mimetype 为 "image/gif" $mailfile = new CMailFile($subject,$sendto,$replyto,$message,$filename,$mimetype); $mailfile->sendfile(); $subject -- 主题 $sendto -- 收信人地址 $replyto -- 回复地址 $message -- 信件内容 $filename -- 附件文件名 $downfilename -- 下載的文件名 $mimetype -- mime类型 */ ?> 演示示例 代码如下: sendfile(); ?>
tomakephpapplicationsfaster,关注台词:1)useopcodeCachingLikeLikeLikeLikeLikePachetoStorePreciledScompiledScriptbyTecode.2)MinimimiedAtabaseSqueriSegrieSqueriSegeriSybysequeryCachingandeffeftExting.3)Leveragephp7 leveragephp7 leveragephp7 leveragephpphp7功能forbettercodeefficy.4)

到ImprovephPapplicationspeed,关注台词:1)启用opcodeCachingwithapCutoredUcescriptexecutiontime.2)实现databasequerycachingusingpdotominiminimizedatabasehits.3)usehttp/2tomultiplexrequlexrequestsandredececonnection.4 limitsclection.4.4

依赖注入(DI)通过显式传递依赖关系,显着提升了PHP代码的可测试性。 1)DI解耦类与具体实现,使测试和维护更灵活。 2)三种类型中,构造函数注入明确表达依赖,保持状态一致。 3)使用DI容器管理复杂依赖,提升代码质量和开发效率。

databasequeryOptimizationinphpinvolVolVOLVESEVERSEVERSTRATEMIESOENHANCEPERANCE.1)SELECTONLYNLYNESSERSAYCOLUMNSTORMONTOUMTOUNSOUDSATATATATATATATATATATRANSFER.3)

phpisusedforsenderemailsduetoitsbuilt-inmail()函数andsupportiveLibrariesLikePhpMailerandSwiftMailer.1)usethemail()functionforbasicemails,butithasimails.2)butithasimimitations.2)

PHP性能瓶颈可以通过以下步骤解决:1)使用Xdebug或Blackfire进行性能分析,找出问题所在;2)优化数据库查询并使用缓存,如APCu;3)使用array_filter等高效函数优化数组操作;4)配置OPcache进行字节码缓存;5)优化前端,如减少HTTP请求和优化图片;6)持续监控和优化性能。通过这些方法,可以显着提升PHP应用的性能。

依赖性注射(DI)InphpisadesignPatternthatManages和ReducesClassDeptions,增强量产生性,可验证性和Maintainability.itallowspasspassingDepentenciesLikEdenceSeconnectionSeconnectionStoclasseconnectionStoclasseSasasasasareTers,interitationApertatingAeseritatingEaseTestingEasingEaseTeStingEasingAndScalability。

cachingimprovesphpermenceByStorcyResultSofComputationsorqucrouctationsorquctationsorquickretrieval,reducingServerLoadAndenHancingResponsetimes.feftectivestrategiesinclude:1)opcodecaching,whereStoresCompiledSinmememorytssinmemorytoskipcompliation; 2)datacaching datacachingsingMemccachingmcachingmcachings


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