我想将IP地址存储到MySQL VARBINARY(16)中。我已将二进制地址作为字符串'01001010010100101001010010100101'。
当我将其插入MySQL时。我意识到这不会自动转换。
在搜索PHP手册之后，我很惊讶没有这方面的功能。
需要有关如何将二进制字符串转换为VARBINARY的帮助。
答案 0 :(得分：0)
在PHP中，您可以使用bindec和long2ip将二进制字符串转换为IPv4地址：
bindec - 返回binary_string参数表示的二进制数的十进制等值。
long2ip - 将长整数地址转换为（IPv4）Internet标准点阵格式的字符串
$ip_as_int = bindec('01001010010100101001010010100101');
$ipv4 = long2ip ( $ip_as_int );
echo $ipv4;
74.82.148.165
答案 1 :(得分：0)
谢谢大家！但我认为我找到了一个更好的解决方案：6年前发布在PHP手册页上的人：
http://php.net/manual/en/function.pack.php#93085
<?php
function bin2bstr($input)
// Convert a binary expression (e.g., "100111") into a binary-string
{
if (!is_string($input)) return null; // Sanity check
// Pack into a string
return pack('H*', base_convert($input, 2, 16));
}
function bstr2bin($input)
// Binary representation of a binary-string
{
if (!is_string($input)) return null; // Sanity check
// Unpack as a hexadecimal string
$value = unpack('H*', $input);
// Output binary representation
return base_convert($value[1], 16, 2);
}
// Returns string(3) "ABC"
var_dump(bin2bstr('01000001 01000010 01000011'));
// Returns string(24) "010000010100001001000011"
var_dump(bstr2bin('ABC'));
?>
答案 2 :(得分：-1)
您可以通过组合功能function isRegistered() {
var db = window.sqlitePlugin.openDatabase({name: "my.db"});
console.log("CT: registering tables") ;
db.transaction(checkTable, errorCB,function(){
console.log("Success") ;
});
}
function isTableExists(tx, tableName, callback) {
tx.executeSql('SELECT * FROM '+tableName, [], function(tx, resultSet) {
if (resultSet.rows.length <= 0) {
callback(false,0);
} else {
callback(true,2);
}
}, function(err) {
callback(false,1);
})
};
function checkTable(tx) {
// create table
isTableExists(tx, "myInfo", function(status,avar) {
console.log("Avar: "+avar) ;
if (!status) {
console.log("CT: CHECKING myInfo") ;
tx.executeSql("CREATE TABLE IF NOT EXISTS myInfo ('id' INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE,'name' VARCHAR,'phone' VARCHAR,'email' VARCHAR,'fbID' VARCHAR,'fbToken' VARCHAR,'regCode' VARCHAR)",[],function(tx,res) {
console.log("A1 Success: "+JSON.stringify(res)) ;
tx.executeSql('INSERT INTO myInfo VALUES (?,?,?,?,?,?,?)',[0,"","","","","",""],function(res) {
console.log("A2 Success: " + JSON.stringify(res) + " -- probably 1");
}, function(err) {
console.log("A2 fail: "+JSON.stringify(err)) ;
}) ;
},function(err) {
console.log("A1 Fail : "+ JSON.stringify(err)) ;
}) ;
}
}, function(err){
console.log("A Fail: "+JSON.stringify(err)) ;
}) ;
isTableExists(tx, "mySettings", function(status,bvar) {
console.log("Bvar: "+bvar) ;
if (!status) {
tx.executeSql('CREATE TABLE IF NOT EXISTS "mySettings" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE,"vendor" VARCHAR,"display" VARCHAR,"aggregate" VARCHAR)',[],function(tx,res) {
console.log("B1 Success: , "+ JSON.stringify(res)) ;
var vendors = ["General","Twist","Unter","Sobi"] ;
for (var n=0;n<vendors.length;n++) {
tx.executeSql('INSERT INTO mySettings (id,vendor,display,aggregate) VALUES (?,?,?,?);',["","","",""],function(res) {
console.log("B2 Success: " + n + " : " + JSON.stringify(res)) ;
},function(err) {
console.log("B2 Fail: "+JSON.stringify(err)) ;
}) ;
}
},function(err) {
console.log("B1 Fail: "+JSON.stringify(err)) ;
}) ;
}
}, function(err){
console.log("B Fail: "+JSON.stringify(err)) ;
}) ;
}
/* three issues:
1. everytime I execute the app, it "creates" the tables...it should only do it once. Avar & Bvar are returning "1" every time
2. The next tx.executeSql("INSERT...is not triggering (that I can tell).
3. Getting general error from isRegistered(...errorCB...); - which I believe is coming from function isTableExists()
Error processing SQL: 0, a statement error callback did not return false: no such table: myInfo (code 1): , while compiling: SELECT * FROM myInfo
#################################################################
Error Code : 1 (SQLITE_ERROR)
Caused By : SQL(query) error or missing database.
(no such table: myInfo (code 1): , while compiling: SELECT * FROM myInfo)
#################################################################
*/
和完成此操作。
inet_ntoa此外，字符串结果可以转换为conv：
mysql> select inet_ntoa(conv('01001010010100101001010010100101',2,10));
+----------------------------------------------------------+
| inet_ntoa(conv('01001010010100101001010010100101',2,10)) |
+----------------------------------------------------------+
| 74.82.148.165 |
+----------------------------------------------------------+
1 row in set (0.00 sec)
此BINARY字符串也可以使用mysql> select CAST(inet_ntoa(conv('01001010010100101001010010100101',2,10)) AS BINARY);
+--------------------------------------------------------------------------+
| CAST(inet_ntoa(conv('01001010010100101001010010100101',2,10)) AS BINARY) |
+--------------------------------------------------------------------------+
| 74.82.148.165 |
+--------------------------------------------------------------------------+
1 row in set (0.00 sec)
或BINARY轻松放入VARBINARY(16)列。