PHP implementation of constructing SQL statement class instance, constructing SQL statement Instance _php Tutorial

PHP implementation of constructing SQL statement class instance, constructing SQL statement instance

This article describes the construction SQL statement class implemented by PHP. Share to everyone for your reference, as follows:

/*** @package Database class* @author Injection (mail:injection.mail@gmail.com) * @version 1.0*/@ini_set (' Display_ Errors ', 0); class database{private $mDb _host, $mAb _user, $mAb _pwd, $mConn _no; function DataBase ($Conn _obj) {$this Connectdb ($Conn _obj); } function Connectdb ($Conn _obj) {$this->mdb_host = $Conn _obj->host; $this->mad_name = $Conn _obj->user; $thi S->mad_pwd = $Conn _obj->pwd; $this->mconn_no = mysql_connect ($this->mdb_host, $this->mad_name, $this->mad_pwd); } function Selectdb ($Conn _obj) {$this->mdb_name = $Conn _obj->dbname; mysql_select_db ($this->mdb_name);}} /*** @package Making sqls Class exetends Database class* @author Injection (mail:injection.mail@gmail.com) * @version 1.0*/ Class Makesql extends database{private $mSql; function Makesql ($type, $arr _colum_list, $arr _sql_choice) {$this->make SqlType ($arr _colum_list, $arr _sql_choice); }//switch make list function Makesqltype ($type, $arr _colum_list, $arr _sql_choice) { Switch ($type) {case ' Insert ': Return $this->makeinsert ($arr _colum_list, $arr _sql_choice); case ' SELECT ': Return $t His->makeselect ($arr _colum_list, $arr _sql_choice); Case ' Update ': Return $this->makeupdate ($arr _colum_list, $arr _sql_choice); Case ' Delete ': Return $this->makedelete ($arr _colum_list, $arr _sql_choice); }}//make Insert function Makeinsert ($arr _colum_list, $arr _sql_choice) {$colum _key = Array_keys ($arr _colum_list); $col Um_value = array_values ($arr _colum_list); $this->msql = "INSERT into". $arr _sql_choice["Tbl_name"]. " (". Join (', ', $colum _key).") VALUES (' ". Join (" ', ' ", $colum _value)." ') "; return $this->msql; }//making Select function Makeselect ($arr _colum_list = ' * ', $arr _sql_choice) {$colum _value = Array_keys ($arr _colum_li ST); foreach ($arr _sql_choice as $sql _key = $sql _value) {if (strcmp ($sql _key, ' tbl_name ') = = 0) {if (strcmp ($arr _colum_ List, ' * ')!== 0) $this->msql = "select". Join (', ', $colum _value). " From ". $sql _value; else $this->msql = "SELECT * from". $sql _value;} else if (strcmp ($sql _value, ')!== 0) if (strcmp ($sql _key, ' WHERE ') = = = 0 && strcmp ($sql _value, ' colum ') =   = = 0) {foreach ($arr _colum_list as $colum _key = $colum _value) $this->msql. = "$colum _key = ' $colum _value ' and";  $this->msql = RTrim ($this->msql, "and"); } else $this->msql. = "$sql _key". $sql _value;}  return $this->msql; }//making Update function makeupdate ($arr _colum_list, $arr _sql_choice) {$this->msql = "Update". $arr _sql_choice[' TB L_name ']. " SET "; foreach ($arr _colum_list as $colum _key = $colum _value) $this->msql. = "$colum _key = ' $colum _value ',"; $this->msql = RTrim ($this->msql, ', '); foreach ($arr _sql_choice as $sql _key = $sql _value) {if (strcmp ($sql _value, ')!== 0 && strcmp ($sql _key, ' Tbl_name ')!==0 && strcmp ($sql _key, ' ORDER by ')!== 0) $this->msql. = "$sql _key". $sql _value;} return $this->msql; }Making delete function Makedelete ($arr _colum_list, $arr _sql_choice) {$this->msql = "Delete from". $arr _sql_choice[ ' Tbl_name ']; foreach ($arr _sql_choice as $sql _key = $sql _value) {if (strcmp ($sql _key, ' tbl_name ')!== 0 && strcmp ($sql _ Value, ')!== 0) {$this->msql. = "$sql _key". $sql _value;}} return $this->msql; }}

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I hope this article is helpful to you in PHP programming.

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