前些天下载了adodb,想用adodb连access数据库,后来连是连上了,不过不能更新和插入记录,也不知道为什么到现在还没人给我回答那个苦恼的问题,后来就放弃了adodb,使用php自己的odbc,但是使用很不方便,就写下了下面这些函数,还没有封装成类,希望能够为有同样问题的朋友一些帮助 /* //==================================== //==================================== ?>
* @ access class
* insert,update,delete record
* version 1.0
* date 2005.6
* power by Samsun Manzalo (34n 猪八戒)
* www.knowsky.com
*/
// insert record
// 插入记录
//====================================
function insRd($table,$field){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$tmpA = explode(,,$field);
$ins = ;
for($i=0;$i
}
$ins = substr($ins,0,-1);
$sql = "INSERT INTO ".$table." (".$field.") VALUES (".$ins.")";
//echo $sql;exit;
$query = @odbc_do($connid,$sql);
}
//====================================
// get one record detail
// 取得当条记录详细信息
//====================================
function getInfo($table,$field,$id,$colnum){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "select * from ".$table." where ".$field."=".$id;
$query = @odbc_do($connid,$sql);
if(odbc_fetch_row($query)){
for($i=0;$i $info[$i] = odbc_result($query,$i+1);
}
}
return $info;
}
//====================================
// get record list
// 取得记录列表
//====================================
function getList($table,$field,$colnum,$condition,$sort="order by id desc"){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "select * from ".$table." ".$condition." ".$sort;
$query = @odbc_do($connid,$sql);
//echo $sql."
";
$i = 0;
while(odbc_fetch_row($query)){
$rdList[$i] = getInfo($table,$field,odbc_result($query,1),$colnum);
$i++;
}
return $rdList;
}
//====================================
// get record list condition
// 取得记录列表
//====================================
function getFieldList($table,$field,$fieldnum,$condition="",$sort=""){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "select ".$field." from ".$table." ".$condition." ".$sort;
$query = @odbc_do($connid,$sql);
//echo $sql."
";
$i = 0;
while(odbc_fetch_row($query)){
for($j=0;$j $info[$j] = odbc_result($query,$j+1);
}
$rdList[$i] = $info;
$i++;
}
return $rdList;
}
// update record
// 更新记录
//====================================
function updateInfo($table,$field,$id,$set){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "update ".$table." set ".$set." where ".$field."=".$id;
$query = @odbc_do($connid,$sql);
}
//====================================
// record delete
// 删除记录
//====================================
function delRd($table,$field,$id){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "delete from ".$table." where ".$field."=".$id;
$query = @odbc_do($connid,$sql);
}
//====================================
// record delete cat
// 删除记录(条件)
//====================================
function delOrRd($table,$condition){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "delete from ".$table." where ".$condition;
$query = @odbc_do($connid,$sql);
}
//====================================
// count record
// 取得记录数
//====================================
function countRd($table,$condition=""){
$connstr = "DRIVER=Microsoft Access Driver (*.mdb);DBQ=database/email.mdb";
$connid = @odbc_connect($connstr,"","",SQL_CUR_USE_ODBC ) or die ("数据库连接错误!");
$sql = "select count(*) as num from ".$table." ".$condition;
$query = @odbc_do($connid,$sql);
odbc_fetch_row($query);
$num = odbc_result($query,1);
return $num;
}

tomakephpapplicationsfaster,關注台詞:1)useopcodeCachingLikeLikeLikeLikeLikePachetoStorePreciledScompiledScriptbyTecode.2)MinimimiedAtabaseSqueriSegrieSqueriSegeriSybysequeryCachingandeffeftExting.3)Leveragephp7 leveragephp7 leveragephp7 leveragephpphp7功能forbettercodeefficy.4)

到ImprovephPapplicationspeed,關注台詞:1)啟用opcodeCachingwithapCutoredUcescriptexecutiontime.2)實現databasequerycachingingusingpdotominiminimizedatabasehits.3)usehttp/2tomultiplexrequlexrequestsandreduceconnection.4 limitesclection.4.4

依赖注入(DI)通过显式传递依赖关系,显著提升了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。

DatabasequeryoptimizationinPHPinvolvesseveralstrategiestoenhanceperformance.1)Selectonlynecessarycolumnstoreducedatatransfer.2)Useindexingtospeedupdataretrieval.3)Implementquerycachingtostoreresultsoffrequentqueries.4)Utilizepreparedstatementsforeffi

phpisusedforsenderemailsduetoitsbuilt-inmail()函數andsupportivelibrariesLikePhpMailerAndSwiftMailer.1)usethemail()functionForbasiceMails,butithasimails.2)butithasimail.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,可以显著提升PHP应用的性能。

依賴性注射(DI)InphpisadesignPatternthatManages和ReducesClassDeptions,增強量強制性,可驗證性和MATIALWINABIOS.ItallowSpasspassingDepentenciesLikEdenciesLikedAbaseConnectionStoclasseconnectionStoclasseSasasasasareTers,interitationAseTestingEaseTestingEaseTestingEaseTestingEasingAndScalability。

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


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