dbm to milliwatts

This sort record was originally used for our class. because the server does not support MySQL, we chose dbm. there is no dbm program in China, and it took almost no night abroad, I wrote it out with almost no reference. it is a very good example of dbm usage. 1. index. php3 lt ;? If ($ login ){? Gt; lt; HTML gt; lt; HEAD g this record was originally used fo

This sort record was originally used for our class. because the server does not support mysql, we chose dbm. there is no dbm program in China, and it took almost no night abroad, I wrote it out with almost no reference. it is a very good example of dbm usage. 1. index. php3? If ($ login ){? HTMLHEADTITLE: the transcript of Shenzhen Middle School 2000 was original

This sort record was originally used for our class. because the server does not support mysql, we chose dbm. there is no dbm program in China, and it took almost no night abroad, I wrote it out with almost no reference. it is a very good example of dbm usage. 1. index. php3? If ($ login ){? HTMLHEADTITLE: the transcript of Shenzhen Middle School 2000 was original

10, member information display file SHOW.PHP3 if ($login) { Require ("common.php3"); if (!isset ($id)) error ("How do I not fill in the user ID?") "); else{ $id =chop ($id); $DBM =dbmopen ("Class", "R"); if (!dbmexists ($DBM, $id)) error ("Without this user id! "); else{ $data =dbmfetch ($dbm, $id); $info =explode ("|!:!|", $data); $name = $info [0]; $nickname =

PHP + DBM logging program (2) 3. delete member del. php3 Require ("common. php3 "); $ Id = chop ($ id ); If (! Isset ($ id) error ("Enter the user id to delete! "); Elseif ($ pwd Else { $ Data = dbmopen ("class", "w "); Dbmdelete ($ data, $ id ); Dbmclose ($ data ); $ Data = dbmopen ("password", "w "); Dbmdelete ($ data, $ id ); Dbmclose ($ data ); Header ("location: index. php3 "); } ?> 4. public file common. php3 $ Adminpass = "test "; Function e

PHP + DBM logging program (5) 10. member information display file show. php3 If ($ login ){ Require ("common. php3 "); If (! Isset ($ id) error ("Why didn't I enter the user ID? "); Else { $ Id = chop ($ id ); $ Dbm = dbmopen ("class", "r "); If (! Dbmexists ($ dbm, $ id) error ("this user id is not available! "); Else { $ Data = dbmfetch ($

The RF signal of the radio transmitters output is transmitted to the antenna via a feeder (cable) and radiated out by the antenna in the form of electromagnetic waves. ElectromagneticWhen the wave arrives at the receiving location, it is received by the antenna (only a small fraction of the power is received) and sent to the radio receiver via the feeder.Therefore, it is very important to calculate the transmitting power of the transmitting device and the radiation ability of the antenna in the

PHP + DBM logging program (4 ). 8. register reg. php3? Require (common. php3); require (mail. php3); if ($ submit) {if ($ id) error (please enter your registered user name !); Elseif (! Eregi (^ [0-9a-zA_Z] + $, $ id) error (your user 8. registration file reg. php3 Require ("common. php3 "); Require ("mail. php3 "); If ($ submit ){ If ($ id = "") error ("Enter your registered username! "); Elseif (! Eregi ("^ [0-9a-zA_Z] + $", $ id) error ("Your user

PHP + DBM logging program (1) This tutorial was originally used for our class. because the server does not support mysql, dbm is selected. There is no dbm program in China, and there is almost no dbm program abroad. It took me one night to write it out without any reference. Published now Is a very good

PHP + DBM logging program (1) This tutorial was originally used for our class. because the server does not support mysql, we chose dbm. There is no dbm program in China, and there is almost no dbm program abroad. It took me one night to write it out without any reference. Published now Is a very good

This article describes how to import DBM data to a mysql database. If you need it, refer to this example. This article describes how to import DBM data to a mysql database. If you need it, refer to this example. First, I used PERL to save the file in DBM. There are more than 50 thousand records and each record has 15 fields. I want to use MYSQL now. I want to

1. DBM DBM is the absolute value of power. The formula is: 10lgp (power value/1 MW ). [Example 1] If the transmit power P is 1 MW, it is converted to dBm and then 0dbm. [Example 2] for 40 W power, the converted value in dBm unit should be: 10lg (40 W/1 MW) = 10lg (40000) = 10lg4 + 10lg10 + 10lg1000 = 46dbm. 2. DBI and

10, member information display file SHOW.PHP3 if ($login) { Require ("common.php3"); if (!isset ($id)) error ("How do I not fill in the user ID?") "); else{ $id =chop ($id); $DBM =dbmopen ("Class", "R"); if (!dbmexists ($DBM, $id)) error ("Without this user id! "); else{ $data =dbmfetch ($dbm, $id); $info =explode ("|!:!|", $data); $name = $info [0];　　　　$nicknam

--> --> 8, registration file Reg. PHP3?Require ("common.") PHP3 ");Require ("Mail.") PHP3 ");if ($submit) {if ($id = = "") Error ("Please fill in your registered user name!") ");ElseIf (!eregi ("^[0-9a-za_z]+$", $id)) error ("Your username cannot contain other characters!") ");ElseIf ($password = = "") Error ("Please fill in your password!") ");ElseIf ($password ElseIf ($name = = "") Error ("Please fill in your name!") ");ElseIf ($mail = = "") Error ("Please fill in your email address!") ");e

Program 10, member information display file SHOW.PHP3 ? if ($login) { Require ("common.php3"); if (!isset ($id)) error ("How did you not fill in the user ID?") "); else{ $id =chop ($id); $DBM =dbmopen ("Class", "R"); if (!dbmexists ($DBM, $id)) error ("No this user id! "); else{ $data =dbmfetch ($dbm, $id); $info =explode ("|!:!|", $data); $name = $info [0]; $nic

Program 3, delete member Del.php3 ? Require ("common.php3"); $id =chop ($id); if (!isset ($id)) error ("Please enter the user ID to be deleted!") "); ElseIf ($pwd else{ $data =dbmopen ("Class", "W"); Dbmdelete ($data, $id); Dbmclose ($data); $data =dbmopen ("Password", "w"); Dbmdelete ($data, $id); Dbmclose ($data); Header ("location:index.php3"); } ?> 4. Common file Common.php3 ? $adminpass = "Test"; Function error ($MSG) { ?> Cause of error: Style= "font-size:9pt" >? } ?> 5, landing document

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8. Registration Document REG.PHP3 Require ("common.php3"); Require ("mail.php3"); if ($submit) { if ($id = = "") Error ("Please fill in your registered user name!") "); ElseIf (!eregi ("^[0-9a-za_z]+$", $id)) error ("Your user name cannot contain other characters!") "); ElseIf ($password = = "") Error ("Please fill in your password!") "); ElseIf ($password ElseIf ($name = = "") Error ("Please fill in your name!") "); ElseIf ($mail = = "") Error ("Please fill in your email address!") "); else{ $

Problem 1: gcc compilation always undefined reference to 'dbm _ open' Description: Gcc-I/user/include-L/user/lib-o dbm1 dbm1.c-lgdbm This statement always fails. I installed dbm once through the deb package, and its files were included in/usr/include and/user/lib, respectively. An error occurred while compiling. So I tried to download the source file myself, compile it myself, http://Ubuntu.cn99.com/ubun

magnification is three, it is easy to calculate and write errors. But expressed in db form, respectively, 10db,20db,30db, the total magnification of 10+20+30=60db, convenient a lot.It is because of the benefits that science and other fields such as electronics, such as seismic grade, sound size, and so on, are used in decibels or similar to the exponential representation of decibels.DBMW/DBM/DB milli-wattUnit decibel, writing DBMW or