Php database connection encoding settings

For php database connection encoding settings, I first run the PHP website locally. The environment has been properly matched and the database has been imported. an error occurs during IIS browsing. a prompt box is displayed, ". $ str."

This is the error. Is there any help.

Public function show_error ($ message = '', $ SQL = ''){
Echo" ";
Echo" Error message:
";
Echo"

";
Echo 'error cause: '. mysql_error ()."

";
Echo"

";
Echo "". $ message ."";
Echo"

";
Echo"

" . $sql . "

";
Echo"

";
Echo" ";
}

Reply to discussion (solution)

Post the code ....

Post the code ....

Can you help me? This problem occurred all morning.

Let's take a look at the figure. it doesn't feel like you think it is.

Let's take a look at your code. your error message does not clearly indicate the error.

Let's take a look at your code. your error message does not clearly indicate the error.

This is the code for database connection!


Class mysql {

Private $ db_host;
Private $ db_user;
Private $ db_pwd;
Private $ db_database;
Private $ conn;
Private $ SQL;
Private $ result;
Private $ coding;
Private $ show_error = true;

Public function _ construct ($ db_host = "localhost", $ db_user = "root", $ db_pwd = "admin", $ db_database = "likang ", $ coding = 'utf-8 '){
$ This-> db_host = $ db_host;
$ This-> db_user = $ db_user;
$ This-> db_pwd = $ db_pwd;
$ This-> db_database = $ db_database;
$ This-> coding = $ coding;
$ This-> connect ();
}

Private function connect (){

$ This-> conn = @ mysql_connect ($ this-> db_host, $ this-> db_user, $ this-> db_pwd );
If (! $ This-> conn ){
If ($ this-> show_error ){
$ This-> show_error ('error prompt: failed to connect to the database! ');
}
}

If (! @ Mysql_select_db ($ this-> db_database, $ this-> conn )){
If ($ this-> show_error ){
$ This-> show_error ('error prompt: failed to open the database! ');
}
}

If (! @ Mysql_query ("set names $ this-> coding ")){
If ($ this-> show_error ){
$ This-> show_error ('error prompt: failed to set the encoding! ');
}
}
}

Public function query ($ SQL ){
$ This-> SQL = $ SQL;
$ Result = mysql_query ($ this-> SQL, $ this-> conn );
If (! $ Result ){
$ This-> show_error ('wrong SQL statement: ', $ this-> SQL );
} Else {
Return $ this-> result = $ result;
}
}

Public function close ()
{
Return mysql_close ();
} // Close the database connection


Public function show_databases (){
$ This-> query ("show databases ");
Echo 'existing database: '. mysql_num_rows ($ this-> result );
Echo"
";
$ I = 1;
While ($ row = mysql_fetch_array ($ this-> result )){
Echo "$ I $ row [Database]"."
";
$ I ++;
}
}

Public function show_tables (){
$ This-> query ("show tables ");
Echo "database {$ this-> db_database} total". mysql_num_rows ($ this-> result). "table :";
Echo"
";
$ Column_name = "Tables_in _". $ this-> db_database;
$ I = 1;
While ($ row = mysql_fetch_array ($ this-> result )){
Echo "$ I $ row [$ column_name]"."
";
$ I ++;
}
}

Public function fetch_array ($ result = ''){
If ($ this-> result ){
Return mysql_fetch_array ($ this-> result );
} Else {
Return mysql_fetch_array ($ result );
}
}

Public function findall ($ table, $ field = '*'){
Return $ this-> query ("SELECT $ field FROM $ table ");
}

Public function delete ($ table, $ condition ){
Return $ this-> query ("delete from $ table WHERE $ condition ");
}

Public function insert ($ table, $ field, $ value ){
$ I = $ this-> query ("INSERT INTO $ table ($ field) VALUES ('$ value ')");
Return $ I;
}

Public function update ($ table, $ update_content, $ condition ){
// Echo "UPDATE $ table SET $ update_content WHERE $ condition ";

Return $ this-> query ("UPDATE $ table SET $ update_content WHERE $ condition ");

}

Public function insert_id (){
Return mysql_insert_id ();
}

Public function num_rows (){
If ($ this-> result = null ){
If ($ this-> show_error ){
$ This-> show_error ('SQL statement error',' check whether the query () method is used and the resource identifier is returned? ');
}
} Else {
Return mysql_num_rows ($ this-> result );
}
}

Public function num_fields ($ table ){
$ This-> query ("select * from $ table ");
Echo"
";
Echo 'field count: '. $ total = mysql_num_fields ($ this-> result );
Echo"

";  
 for ($i = 0; $i < $total; $i++) {  
 print_r(mysql_fetch_field($this->result, $i));  
 }  
 echo "

";
Echo"
";
}

Public function show_error ($ message = '', $ SQL = ''){
Echo" ";
Echo" Error message:
";
Echo"

";
Echo 'error cause: '. mysql_error ()."

";
Echo"

";
Echo "". $ message ."";
Echo"

";
Echo"

" . $sql . "

";
Echo"

";
Echo" ";
}


}

?>

Let's take a look at the figure. it doesn't feel like you think it is.

When I click index. php, the database connection code and two pop-up window ". $ str." are displayed. the code I pasted is displayed in red.
Public function show_error ($ message = '', $ SQL = ''){
Echo"

";
Echo" Error message:
";
Echo"

";
Echo 'error cause: '. mysql_error ()."

";
Echo"

";
Echo "". $ message ."";
Echo"

";
Echo"

" . $sql . "

";
Echo"

";
Echo" ";

After clicking OK, the page cannot be found.

This is the PHP configuration environment. mysql has no value. is it related to this? Wordpress phpMyAdmin is installed in these places.