php - Retrieveing data from database results in 0 results -

-

i've got multiple entries in database, yet php code returns 0 entries.

here's php:

error_reporting(e_all);  ini_set('display_errors', 1);    $conn = new mysqli($host, $user, $pass, $databasename);    // check connection can established  if ($conn->connect_error) {      die("connection failed: " . $conn->connect_error);  }    $sql = "select charts_url, charts_date, charts_retrace, charts_start_of_swing_trade, charts_end_of_swing_trade, charts_bull_flag, charts_bear_flag, charts_ema_crossover, charts_trading_instrument charts";    $result = $conn->query($sql);    if($result && $result->num_rows > 0) {      // output data of each row    echo "       <table>         <tr>           <td><strong><u>chart</u></strong></td>           <td><strong><u>date</u></strong></td>           <td><strong><u>retrace</u></strong></td>           <td><strong><u>start of swing trade</u></strong></td>           <td><strong><u>end of swing trade</u></strong></td>           <td><strong><u>bull flag</u></strong></td>           <td><strong><u>bear flag</u></strong></td>           <td><strong><u>ema crossover</u></strong></td>           <td><strong><u>trading instrument</u></strong></td>         </tr>";      while ($row=mysqli_fetch_array($sql)) {          echo  "<tr><td><a href=" . $row['charts_url']. "><img src=". $row['charts_url']. "></a></td>";          echo  "<td>" . $row['charts_date']. "</td>";          echo  "<td>" . $row["charts_retrace"]. "</td>";          echo  "<td>" . $row["charts_start_of_swing_trade"]. "</td>";          echo  "<td>" . $row["charts_end_of_swing_trade"]. "</td>";          echo  "<td>" . $row["charts_bull_flag"]. "</td>";          echo  "<td>" . $row["charts_bear_flag"]. "</td>";          echo  "<td>" . $row["charts_ema_crossover"]. "</td>";          echo  "<td>" . $row["charts_trading_instrument"]. "</td></tr>";      }       echo "</table>";  } else {      echo "0 results";  }  $conn->close();     ?>

obviously, cut out actual database info such username, password, etc. here's snippet php code used submit data database submits data database.

 $sql = "insert charts (charts_url, charts_date, charts_retrace, charts_start_of_swing_trade, charts_end_of_swing_trade, charts_bullflag, charts_bearflag, charts_ema_crossover, charts_trading_instrument) values (?, ?, ?, ?, ?, ?, ?, ?, ?)";

so can double check variables between data retrieval/display code , data insertion code. data insertion code works perfectly. see data inthe database submitted through form. when try , retrieve data , display it, "0 results" message. ideas?

issue #1
have typos in query

insert ... charts_bullflag, charts_bearflag ... select ... charts_bull_flag, charts_bear_flag ...

you have _ in 2 of column names in select

issue #2
doing fetch_array() on query string

while ($row=mysqli_fetch_array($sql)) {

you need on query result - $result

while ($row=mysqli_fetch_array($result)) {

or since using oop style query, loop in oop style 

while ($row=$result->fetch_array(mysqli_num)) {

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