get user and display info? - php

Question

So i've got this input where i can put a username in and it'll use $_POST to get what i put in the input box however i'm struggling on how to get all the information from my database relating to this username and displaying it?
<form action="ProcessPlayerSearch.php" method="POST">
<div class="input-group input-group-sm">
<input type="text" name="SearchUser" id="SearchUser" class="form-control">
<span class="input-group-btn">
<button type="submit" class="btn btn-info btn-flat" type="button">Search</button>
</span>
</div>
</h4>
</form>
This is my ProcessPlayerSearch.php
function GetPlayerSearch(){
global $database;
$user = $_POST['Searchuser'];
$q = "SELECT * FROM NEWPlayerInfo WHERE player=$user";
$result = $database->query($q);
/* Error occurred, return given name by default */
$num_rows = mysqli_num_rows($result);
if(!$result || ($num_rows < 0)){
echo "User not found";
return;
}
if($num_rows == 0){
echo "User not found";
return;
}
for($i=0; $i<$num_rows; $i++){
mysqli_data_seek($result, $i);
$row=mysqli_fetch_row($result);
$uuid = $row[0]; //UUID
$player = $row[1]; //player
$kicks = $row[2]; //kicks
$bans = $row[3]; //bans
echo "$uuid<br>";
echo "$player<br>";
echo "$kicks<br>";
echo "$bans<br>";
}
}
and the error i get is
mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in
however i don't get why it would return a boolean? as i've entered a string into the input? Any help thanks.

Answer 1

Since you are displaying a single user data, Using for loop would be a little overhead. Now we return the array containing the user info from your function:
function GetPlayerSearch($user){
global $database;
$user = $_POST['Searchuser'];
$q = "SELECT * FROM `NEWPlayerInfo` WHERE player='$user'";
$result = $database->query($q);
/* Error occurred, return given name by default */
$num_rows = mysqli_num_rows($result);
$res =mysqli_fetch_assoc($result);
$userinfo =array();
if($num_rows>1){
$userinfo[] = $res;
}else{
$userinfo[] = array();
}
return $userinfo;
}
Now search the user:
if(isset($_POST['SearchUser'])){
$user = isset($_POST['SearchUser'])? $_POST['SearchUser']:'';
$player = GetPlayerSearch($user);
}
Display a single player data:
if(!empty($player)){ //you can also use array_filter()
echo $player['UUID'].'<br>';
echo $player['player'].'<br>';
echo $player['kicks'].'<br>';
}else{
echo 'No user';
}