php mysql删除语句未运行
我的SQL语句在phpMyAdmin中工作，但当我使用PHP从我的网页运行它时，它什么也不做 我的代码如下，它总是返回true。我已经解决了这个问题，但主要问题是代码没有删除行php mysql删除语句未运行,php,mysql,pdo,delete-row,Php,Mysql,Pdo,Delete Row,我的SQL语句在phpMyAdmin中工作，但当我使用PHP从我的网页运行它时，它什么也不做 我的代码如下，它总是返回true。我已经解决了这个问题，但主要问题是代码没有删除行 // Delete Area public function deleteArea($product_area_id){ $this->db->query(" DELETE FROM product_area WHERE product_area_id = :product
// Delete Area
public function deleteArea($product_area_id){
$this->db->query("
DELETE
FROM product_area
WHERE product_area_id = :product_area_id
LIMIT 1
");
//bind
$this->db->bind(':product_area_id', $product_area_id);
//Execute
if($this->db->execute()){
return true;
} else {
return false;
}
}
public function bind($param, $value, $type = null) {
if (is_null ( $type )) {
switch (true) {
case is_int ( $value ) :
$type = PDO::PARAM_INT;
break;
case is_bool ( $value ) :
$type = PDO::PARAM_BOOL;
break;
case is_null ( $value ) :
$type = PDO::PARAM_NULL;
break;
default :
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue ( $param, $value, $type );
}
public function query($query) {
$this->stmt = $this->dbh->prepare($query);
}
public function execute(){
return $this->stmt->execute();
}
您正在将PDO与
mysql\uz对不起，我失礼了。我传入的值是$Product\u area\u id，我使用的值是$Product\u area\u id.god op的评论引述（目前的最后一条评论）： 主要问题是，它不会删除。即使sql 在phpmyadmin中直接测试时，状态是正确的。中学 问题是，它也会说是真的。即使它没有删除。 机智解决了第二个问题。主要问题仍然存在- 科德努布 TLDR://注意：PDO语句：：执行。。。。成功时返回TRUE，失败时返回FALSE 这就是为什么它总是为你返回1。请参阅下面的2个文件，使用PDOStatement对象的
rowCount（）rowCount（）create table product_area
( product_area_id int primary key,
theName varchar(100) not null
);
-- blockA begin
truncate product_area;
insert product_area (product_area_id,theName) values
(1,'Houston zone B'),(2,'Houston zone BH'),(20,'Houston zone Z');
-- blockA end
<?php
// myPDO_DB.php
//
error_reporting(E_ALL);
ini_set("display_errors", 1);
include "db_connect_info.php"; // brings in the "defines" .. Shoot for a secure o/s vault in this file.
class myPDO_DB {
// will grab the stub from http://culttt.com/2012/10/01/roll-your-own-pdo-php-class/
//
// and then build your class into it (because you did not provide it)
//
// and then further improve it with try/catch blocks that were lacking
//
private $host = DB_HOST; // these were brought in with the include above. File not shown.
private $user = DB_USER;
private $pass = DB_PASS;
private $dbname = DB_NAME;
private $dbh;
public $stmt; // was made public to get into rowCount(); .... change this for your needs
private $error;
public function __construct(){
// Set DSN
$dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
// Set options
$options = array(
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => false
);
// Create a new PDO instanace
try{
$this->dbh = new PDO($dsn, $this->user, $this->pass, $options);
echo "Connect Ok<br>";
}
catch(PDOException $e){
$this->error = $e->getMessage();
}
}
public function bind($param, $value, $type = null) {
try {
if (is_null ( $type )) {
switch (true) {
case is_int ( $value ) :
$type = PDO::PARAM_INT;
break;
case is_bool ( $value ) :
$type = PDO::PARAM_BOOL;
break;
case is_null ( $value ) :
$type = PDO::PARAM_NULL;
break;
default :
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue ( $param, $value, $type );
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
public function query($query) {
try {
$this->stmt = $this->dbh->prepare($query);
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
public function execute(){
try {
return $this->stmt->execute();
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
}
create table product_area
( product_area_id int primary key,
theName varchar(100) not null
);
-- blockA begin
truncate product_area;
insert product_area (product_area_id,theName) values
(1,'Houston zone B'),(2,'Houston zone BH'),(20,'Houston zone Z');
-- blockA end
<?php
// myPDO_DB.php
//
error_reporting(E_ALL);
ini_set("display_errors", 1);
include "db_connect_info.php"; // brings in the "defines" .. Shoot for a secure o/s vault in this file.
class myPDO_DB {
// will grab the stub from http://culttt.com/2012/10/01/roll-your-own-pdo-php-class/
//
// and then build your class into it (because you did not provide it)
//
// and then further improve it with try/catch blocks that were lacking
//
private $host = DB_HOST; // these were brought in with the include above. File not shown.
private $user = DB_USER;
private $pass = DB_PASS;
private $dbname = DB_NAME;
private $dbh;
public $stmt; // was made public to get into rowCount(); .... change this for your needs
private $error;
public function __construct(){
// Set DSN
$dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
// Set options
$options = array(
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => false
);
// Create a new PDO instanace
try{
$this->dbh = new PDO($dsn, $this->user, $this->pass, $options);
echo "Connect Ok<br>";
}
catch(PDOException $e){
$this->error = $e->getMessage();
}
}
public function bind($param, $value, $type = null) {
try {
if (is_null ( $type )) {
switch (true) {
case is_int ( $value ) :
$type = PDO::PARAM_INT;
break;
case is_bool ( $value ) :
$type = PDO::PARAM_BOOL;
break;
case is_null ( $value ) :
$type = PDO::PARAM_NULL;
break;
default :
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue ( $param, $value, $type );
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
public function query($query) {
try {
$this->stmt = $this->dbh->prepare($query);
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
public function execute(){
try {
return $this->stmt->execute();
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
}
create table product_area
( product_area_id int primary key,
theName varchar(100) not null
);
-- blockA begin
truncate product_area;
insert product_area (product_area_id,theName) values
(1,'Houston zone B'),(2,'Houston zone BH'),(20,'Houston zone Z');
-- blockA end
<?php
// myPDO_DB.php
//
error_reporting(E_ALL);
ini_set("display_errors", 1);
include "db_connect_info.php"; // brings in the "defines" .. Shoot for a secure o/s vault in this file.
class myPDO_DB {
// will grab the stub from http://culttt.com/2012/10/01/roll-your-own-pdo-php-class/
//
// and then build your class into it (because you did not provide it)
//
// and then further improve it with try/catch blocks that were lacking
//
private $host = DB_HOST; // these were brought in with the include above. File not shown.
private $user = DB_USER;
private $pass = DB_PASS;
private $dbname = DB_NAME;
private $dbh;
public $stmt; // was made public to get into rowCount(); .... change this for your needs
private $error;
public function __construct(){
// Set DSN
$dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
// Set options
$options = array(
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => false
);
// Create a new PDO instanace
try{
$this->dbh = new PDO($dsn, $this->user, $this->pass, $options);
echo "Connect Ok<br>";
}
catch(PDOException $e){
$this->error = $e->getMessage();
}
}
public function bind($param, $value, $type = null) {
try {
if (is_null ( $type )) {
switch (true) {
case is_int ( $value ) :
$type = PDO::PARAM_INT;
break;
case is_bool ( $value ) :
$type = PDO::PARAM_BOOL;
break;
case is_null ( $value ) :
$type = PDO::PARAM_NULL;
break;
default :
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue ( $param, $value, $type );
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
public function query($query) {
try {
$this->stmt = $this->dbh->prepare($query);
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
public function execute(){
try {
return $this->stmt->execute();
}
catch(PDOException $e){
$this->error = $e->getMessage();
throw $e;
}
}
}
你在这里混API抱歉我还在学习。混合API意味着什么。嘿@Fred ii-，好久不见了：D（但问题似乎仍在继续）。对于op来说，返回true
或false
并没有多大帮助，您应该查找一些对您有实际帮助的输出。query
在我所知道的每个API中都不适用于bind
或execute
。嘿@FirstOne是的，已经有一段时间了。希望你一切顺利。嗨，Machavity，现在它正确地认识到删除不起作用，但为什么删除状态不起作用。因为如果我将SQL粘贴到phpmyadmin中，将：product\u area\u id更改为一个数字。它将删除该行。它不应该是$this->statement->rowCount（）
？没有PDO:：rowCount（）
方法。很抱歉造成混淆。db是我添加的一个变量。所以$this->db->rowCount（）与$this->stmt->rowCount（）相同；还要注意的是，如果您要删除的id是主键（我只是将一些东西拼凑在一起），则不需要您的限制1
。