PHP Basic Development Code Demonstration

PHP Basic Development Code Example ~
Recently intends to re-pick PHP to develop some small applications, a long time useless PHP, some of the syntax is unfamiliar, this morning wrote three examples, basically the previous PHP reviewed a bit.

Basic syntax Operations:

 '; echo ' test output 1 (single quote)
' Echo ' Test molded 2 (double quotes)
";? >
 '?>
 ';?>
 '; $testInt = 1; $testStr = "string"; $testFloat = 1.23; $testBoolean = false; False/true: If the string is converted to null/"1", the conversion to integer is 0/1$testarray = Array ("First" =>1,2,3,4,5); $testStr 2 = $testStr; Teststr modification, TESTSTR2 will not modify $TESTSTR3 = & $testStr; Teststr modified, TESTSTR3 will also modify echo ' int: '. $testInt. '
'; Echo ' string type: '. $testStr. '
'; $testStr = ' string modified '; Echo ' String type modified: '. $testStr. '
'; echo ' String type modified (2): '. $testStr 2. '
'; echo ' String type modified (3): '. $testStr 3. '
'; Echo ' floating-point type: '. $testFloat. '
'; Echo ' Boolean: '. (int) $testBoolean. '
'; Echo ' array Test (1): '. $testArray [0]. '
'; Echo ' array Test (2): '. $testArray [' first ']. '
';p rint_r ($testArray); Echo '
'; foreach ($testArray as $i = + $value) {echo ' array iteration result: '. $i. " ". $value."
";} Io operation Echo ' ################# #IO操作 ####################
'; Echo ' reads the contents of the file:
'; $theFileName = "test_base.php"; File name or full path $handle = fopen ($theFileName, "RB"); $contents = Fread ($handle, FileSize ($theFileName)); fclose ($handle); Echo '
'. Htmlspecialchars ($contents). '
';? >

Processing of the database:

 '; if ($actionSubmit! = NULL && $actionSubmit! = ') {if ($reqTheType = = ' 1 ') {Testsearch ();} if ($reqTheType = = ' 2 ') {Testinsert (); Testsearch ();} if ($reqTheType = = ' 3 ') {testupdate (); Testsearch ();}} /** * Database Query * Enter description here ... */function testsearch () {echo ' query data
Global $hostname, $username, $password, $database, $databaseCharset; $currentConn = null; $currentConn = mysql_connect ( $hostname, $username, $password); mysql_select_db ($database); mysql_query ("Set names CharSet". $databaseCharset); mysql_query ("Set names". $databaseCharset); $result = mysql_query ("SELECT * from E_user"); The query action returns the result set while ($row = Mysql_fetch_object ($result)) {echo $row->uri. "\ T". ($row->username). "
";} Mysql_free_result ($result); Mysql_close ($currentConn);} /** * Database Data add * Enter description here ... */function Testinsert () {Global $hostname, $username, $password, $database, $datab Asecharset; $insertSql = "INSERT into E_user (Uri,username,password) values"; $insertSql. = "("; $insertSql. = "'". Generateid (). "', ' Test user ', ' 123456 '"; $insertSql. = ")"; $currentConn = null; $currentConn = mysql_connect ($hostname, $ Username, $password), mysql_select_db ($database), mysql_query ("Set names CharSet". $databaseCharset); mysql_query (" Set names ". $databaseCharset); Echo ' Add data '. $insertSql. '
'; $result = mysql_query ($INSERTSQL); The Insert action returns BOOLEANIF (! $result) {die (' Error: '. mysql_error ());} Mysql_close ($currentConn);} /** * Database Modification * Enter description */function testupdate () {Global $hostname, $username, $password, $database, $databas Echarset; $updateSql = "Update E_user"; $updateSql. = "Set username= ' modified user name ' where uri = ' 001 '"; $currentConn = null; $curr Entconn = mysql_connect ($hostname, $username, $password), mysql_select_db ($database), mysql_query ("Set names CharSet" . $databaseCharset); mysql_query ("Set names". $databaseCharset); Echo ' modify data '. $updateSql. '
'; $result = mysql_query ($UPDATESQL); The Insert action returns BOOLEANIF (! $result) {die (' Error: '. mysql_error ());} Mysql_close ($currentConn);} /** * automatically generated ID number * @param unknown_type $count */function generateid ($count = 6) {$resultId = "; for ($i =0; $i < $count; $i + +) { $resultId. = (string) rand (0, 9);} return $resultId;}? >

Object-Oriented Programming:

 URI = $uri; $this->username = $username; $this->password = $password; $this->flag = ' + '; $this->type = self:: User_type_normal;} /* Test the handling of static functions */static function teststatic () {//$this->username = ' static ';//The method is wrong, only static variables can be manipulated in static methods return Self::user_ Type_normal;} The/*get set method is used to manage internal field properties */public function GetURI () {return $this->uri;} Public Function GetUserName () {return $this->username;} Public Function GetPassword () {return $this->password;} Public Function Seturi ($uri) {$this->uri = $uri;} Public Function Setusername ($username) {$this->username = $username;} Public Function SetPassword ($password) {$this->password = $password;} Public Function GetType () {return $this->type;} Public Function SetType ($type) {$this->type = $type;} /* Implement the underlying abstract method */function Showinfo () {echo ' I am myuser object. ';} Implement interface method Public function start () {echo ' Start MyUser object .... ';} Implement interface method public function stop () {echo ' Stop MyUser object ....} Extended from MyUser class Myextenduser extends MyUser implements Module {/* Overwrite parent class constructorNumber */function __construct ($uri = ', $username = ', $password = ') {//Call the parent class's constructor parent::__construct ($uri, $username, $ password);//implement some of your own initialization actions $this->flag = ' 200 ';} /* Overrides the parent class's GetUserName method */public function GetUserName () {return ' inherits from MyUser, '. $this->username;} Implement interface method Public function start () {echo ' Start Myextenduser object .... ';} Implement interface method public function stop () {echo ' Stop Myextenduser object ....} Test the User Object $theuserobj = new MyUser (' 001 ', ' Test user 1 ', ' 123 '); Echo ' User name: '. $THEUSEROBJ->getusername (). '
';p rint_r ($THEUSEROBJ); Echo '
'; Echo ' Tests static function 1: '. $THEUSEROBJ->teststatic (). '
'; Echo ' Tests static function 2: '. Myuser::teststatic (). '
'; Echo ' test implements the interface: '; $theUserObj->start (); Echo '
';//test Inherit $theuserobj2 = new Myextenduser (' 002 ', ' Test User 2 ', ' 123 '); Echo ' User Name 2 (inheritance): '. $THEUSEROBJ 2->getusername (). '
';p Rint_r ($theUserObj 2); Echo '
'; Echo ' Test implements Interface 2: '; $theUserObj 2->start (); Echo '
';? >

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