Using PHP "prev" and "next" to Move Through an Array -

-

i have 2 "buttons" move array cursor next record or prior record. function using "next" move next (older) record works correctly.

however, function move prior ("prev") record (which toward top of array) not work correctly. suspect may related using "mysqli_data_seek". belief set cursor current location , backtrack previous record. instead cursor continues moves forward if "next" used instead of "prev". how can backtrack prior record?

function return_next_issue()     {     // newer issue  - moves towards top of array.     // mysqli_data_seek($_session['result'], 0);     while($row=mysqli_fetch_array($_session['result'], mysql_num))             {                 if($_session['issuenum'] == $row[0])                      {                                                                                break;                     }                }        prev($_session['result']);     $row=mysqli_fetch_row($_session['result']);      return $row[0];     }

since mysqli_result object in session , shared, might want initialize internal pointer 0 make sure know going seek start. can create variable increments on iteration identify index need , seek previous one.

function return_next_issue() {    // newer issue  - moves towards top of array.    $i = 0;    mysqli_data_seek($_session['result'], 0);    while($row=mysqli_fetch_array($_session['result'], mysql_num))    {       if($_session['issuenum'] == $row[0])        {                                                                 break;       }          $i++;     }       mysqli_data_seek($_session['result'], $i - 1);    $row=mysqli_fetch_row($_session['result']);     return $row[0]; }

please note code won't work if $_session['issuenum'] 0 or if greater number of rows available, , therefore code providing.


Comments

Post a Comment

Popular posts from this blog

c++ - No viable overloaded operator for references a map -

-
i trying use map can make tag names reference number. when try , use it, in code error (6 in total every time reference map): src/main.cpp:25:45: error: no viable overloaded operator[] type 'std::map<std::string, std::string>' const char* idcs = node.child_value(tagmap[3]); this code: #include "pugi/pugixml.hpp" #include <iostream> #include <string> #include <map> int main() { pugi::xml_document doca, docb; std::map<std::string, pugi::xml_node> mapa, mapb; std::map<std::string, std::string> tagmap {{"1", "data"}, {"2", "entry"}, {"3", "id"}, {"4", "content"}}; if (!doca.load_file("a.xml") || !docb.load_file("b.xml")) { std::cout << "can't find input files"; return 1; } (auto& node: doca.child(tagmap[1]).children(tagmap[2])) { co
Read more

java - Custom OutputStreamAppender not run: LOGBACK: No context given for <MYAPPENDER> -

-
i wish write custom appender on basis of outputstreamappender . wrote following class package tests; import java.io.ioexception; import java.io.outputstream; import ch.qos.logback.core.outputstreamappender; public class myappender<e> extends outputstreamappender<e> { public myappender() { system.out.println("myappender created"); setoutputstream(new outputstream() { @override public void write(int b) throws ioexception { throw new unsupportedoperationexception(); } }); } } then wrote following runner: package tests; import org.slf4j.loggerfactory; import ch.qos.logback.classic.logger; public class runner { private static final logger log = (logger) loggerfactory.getlogger(runner.class); public static void main(string[] args) { //log.addappender(new myappender<iloggingevent>()); log.info("hello world"); } } finall
Read more

java - Cannot secure connection using TLS -

-
i'm trying establish secure socket connection between java client applet (built jdk 1.7.0_75-b13) , vc++ server application. as test vehicle, used vc++ client/server sample found in msdn forums, modified use schannel , able establish socket using cipher suite tls_rsa_with_aes_128_cbc_sha. works of tls 1.0/1.1/1.2. when try opening socket java applet same server application, connection rejected server reporting following: tls 1.0 acceptsecuritycontext failed: 0x80090327 tls 1.1 acceptsecuritycontext failed: 0x80090331 tls 1.2 acceptsecuritycontext failed: 0x80090331 this java code used create socket: debugprint("setting secure connection"); sslsocketfactory sslsocketfactory = (sslsocketfactory) sslsocketfactory.getdefault(); sslsocket sslsocket = (sslsocket) sslsocketfactory.createsocket("127.0.0.1", socketnumber); debugprint("starting handshake"); sslsocket.settcpnodelay(true); sslsocket.setsolinger(false, 0); sslsocket.s
Read more