PHP SQL Query Length





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-2















The following PHP code is from a website I'm trying to make. Basically, I'm trying to dump the contents of a SQL query into rows with 4 columns in each row.



<?php

    $prep_stmt = $conn->prepare("SELECT * FROM eggs WHERE `egg_dist` = 5");

    $prep_stmt->execute();

    $res = $prep_stmt->fetchAll();



    //$row as $r

    for($x = 0; $x < len($res); $x+=4) {

        echo "<div class ='row'>";

        for($y = $x; $y < $x+4; $y++){

            echo "<div class = 'col-3 text-center'>".$res[$y]['name']."</div>";

        }

        echo "</div>";

    }

?>


The outer for loop should execute 1/4 of the length of the resulting query. The inner loop I want to iterate over 4 of the entries from the query array. I was thinking of doing this with a foreach loop, but the problem is at the beginning of the foreach it will start over again, so I have no way of preserving location and hence I am forced to do it with a regular for loop.



My issue is with len($res), which apparently doesn't exist in PHP. I want to get the array length of the fetched prepared statement but don't quite understand how. The php official documentation shows using fetchColumn(), but the way I tried it must have been wrong. I also saw a site that recommended using len(), and clearly that didn't work either, as if it did I wouldn't be making this post.






php mysql pdo







share|improve this question




















  • 1





    count()

    – Phil
    Jan 3 at 5:17


















-2















The following PHP code is from a website I'm trying to make. Basically, I'm trying to dump the contents of a SQL query into rows with 4 columns in each row.



<?php

    $prep_stmt = $conn->prepare("SELECT * FROM eggs WHERE `egg_dist` = 5");

    $prep_stmt->execute();

    $res = $prep_stmt->fetchAll();



    //$row as $r

    for($x = 0; $x < len($res); $x+=4) {

        echo "<div class ='row'>";

        for($y = $x; $y < $x+4; $y++){

            echo "<div class = 'col-3 text-center'>".$res[$y]['name']."</div>";

        }

        echo "</div>";

    }

?>


The outer for loop should execute 1/4 of the length of the resulting query. The inner loop I want to iterate over 4 of the entries from the query array. I was thinking of doing this with a foreach loop, but the problem is at the beginning of the foreach it will start over again, so I have no way of preserving location and hence I am forced to do it with a regular for loop.



My issue is with len($res), which apparently doesn't exist in PHP. I want to get the array length of the fetched prepared statement but don't quite understand how. The php official documentation shows using fetchColumn(), but the way I tried it must have been wrong. I also saw a site that recommended using len(), and clearly that didn't work either, as if it did I wouldn't be making this post.






php mysql pdo







share|improve this question




















  • 1





    count()

    – Phil
    Jan 3 at 5:17














-2












-2








-2








The following PHP code is from a website I'm trying to make. Basically, I'm trying to dump the contents of a SQL query into rows with 4 columns in each row.



<?php

    $prep_stmt = $conn->prepare("SELECT * FROM eggs WHERE `egg_dist` = 5");

    $prep_stmt->execute();

    $res = $prep_stmt->fetchAll();



    //$row as $r

    for($x = 0; $x < len($res); $x+=4) {

        echo "<div class ='row'>";

        for($y = $x; $y < $x+4; $y++){

            echo "<div class = 'col-3 text-center'>".$res[$y]['name']."</div>";

        }

        echo "</div>";

    }

?>


The outer for loop should execute 1/4 of the length of the resulting query. The inner loop I want to iterate over 4 of the entries from the query array. I was thinking of doing this with a foreach loop, but the problem is at the beginning of the foreach it will start over again, so I have no way of preserving location and hence I am forced to do it with a regular for loop.



My issue is with len($res), which apparently doesn't exist in PHP. I want to get the array length of the fetched prepared statement but don't quite understand how. The php official documentation shows using fetchColumn(), but the way I tried it must have been wrong. I also saw a site that recommended using len(), and clearly that didn't work either, as if it did I wouldn't be making this post.






php mysql pdo







share|improve this question
















The following PHP code is from a website I'm trying to make. Basically, I'm trying to dump the contents of a SQL query into rows with 4 columns in each row.



<?php

    $prep_stmt = $conn->prepare("SELECT * FROM eggs WHERE `egg_dist` = 5");

    $prep_stmt->execute();

    $res = $prep_stmt->fetchAll();



    //$row as $r

    for($x = 0; $x < len($res); $x+=4) {

        echo "<div class ='row'>";

        for($y = $x; $y < $x+4; $y++){

            echo "<div class = 'col-3 text-center'>".$res[$y]['name']."</div>";

        }

        echo "</div>";

    }

?>


The outer for loop should execute 1/4 of the length of the resulting query. The inner loop I want to iterate over 4 of the entries from the query array. I was thinking of doing this with a foreach loop, but the problem is at the beginning of the foreach it will start over again, so I have no way of preserving location and hence I am forced to do it with a regular for loop.



My issue is with len($res), which apparently doesn't exist in PHP. I want to get the array length of the fetched prepared statement but don't quite understand how. The php official documentation shows using fetchColumn(), but the way I tried it must have been wrong. I also saw a site that recommended using len(), and clearly that didn't work either, as if it did I wouldn't be making this post.






php mysql pdo




php mysql pdo






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 3 at 5:18









Phil

99.9k12147163




99.9k12147163










asked Jan 3 at 4:52









danielschnolldanielschnoll

199317




199317








  • 1





    count()

    – Phil
    Jan 3 at 5:17














  • 1





    count()

    – Phil
    Jan 3 at 5:17








1




1





count()

– Phil
Jan 3 at 5:17





count()

– Phil
Jan 3 at 5:17












3 Answers
3






active

oldest

votes


















3














You can get no. of rows return like



$count = $prep_stmt->rowCount();





share|improve this answer































    0














    You can use below code for no of rows..



    /* Number of rows.*/



     $stmt->execute();
    
 $data = $stmt->fetch(PDO::FETCH_ASSOC);
    
 $count = $data['count(*)'];


    /Number of rows/



    http://php.net/manual/en/pdo.prepare.php






    share|improve this answer


























    • PDOStatement does not have a num_rows property

      – Phil
      Jan 3 at 5:16











    • num_rows is there. can you cross check @Phil

      – Umar Abdullah
      Jan 3 at 5:21











    • OP is using PDO, not MySQLi

      – Phil
      Jan 3 at 5:21











    • You are right @ph

      – Umar Abdullah
      Jan 3 at 5:29



















    -1














    $prep_stmt = $conn->query("SELECT * FROM eggs WHERE `egg_dist` = 5 limit 4");
    
$len = $prep_stmt->num_rows;
    
while($row = $prep_stmt->fetch_assoc()) {
    
    echo "<div class ='row'>";
    
    $col = array_keys($row);
    
    for($y = 0; $y < 4; $y++){
    
        echo "<div class = 'col-3 text-center'>".$row[$col[$y]]."</div>";
    
    }
    
    echo "</div>";
    
}



    OR if want print only name



    while($row = $prep_stmt->fetch_assoc()) {
    
    echo "<div class ='row'>";
    
    echo "<div class = 'col-3 text-center'>".$row['name']."</div>";
    
    echo "</div>";
    
}





    share|improve this answer



















    • 1





      PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

      – Phil
      Jan 3 at 5:20














    Your Answer






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    3 Answers
    3






    active

    oldest

    votes








    3 Answers
    3






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    3














    You can get no. of rows return like



    $count = $prep_stmt->rowCount();





    share|improve this answer




























      3














      You can get no. of rows return like



      $count = $prep_stmt->rowCount();





      share|improve this answer


























        3












        3








        3







        You can get no. of rows return like



        $count = $prep_stmt->rowCount();





        share|improve this answer













        You can get no. of rows return like



        $count = $prep_stmt->rowCount();






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 3 at 5:00









        Abdur RahmanAbdur Rahman

        55110




        55110

























            0














            You can use below code for no of rows..



            /* Number of rows.*/



             $stmt->execute();
            
 $data = $stmt->fetch(PDO::FETCH_ASSOC);
            
 $count = $data['count(*)'];


            /Number of rows/



            http://php.net/manual/en/pdo.prepare.php






            share|improve this answer


























            • PDOStatement does not have a num_rows property

              – Phil
              Jan 3 at 5:16











            • num_rows is there. can you cross check @Phil

              – Umar Abdullah
              Jan 3 at 5:21











            • OP is using PDO, not MySQLi

              – Phil
              Jan 3 at 5:21











            • You are right @ph

              – Umar Abdullah
              Jan 3 at 5:29
















            0














            You can use below code for no of rows..



            /* Number of rows.*/



             $stmt->execute();
            
 $data = $stmt->fetch(PDO::FETCH_ASSOC);
            
 $count = $data['count(*)'];


            /Number of rows/



            http://php.net/manual/en/pdo.prepare.php






            share|improve this answer


























            • PDOStatement does not have a num_rows property

              – Phil
              Jan 3 at 5:16











            • num_rows is there. can you cross check @Phil

              – Umar Abdullah
              Jan 3 at 5:21











            • OP is using PDO, not MySQLi

              – Phil
              Jan 3 at 5:21











            • You are right @ph

              – Umar Abdullah
              Jan 3 at 5:29














            0












            0








            0







            You can use below code for no of rows..



            /* Number of rows.*/



             $stmt->execute();
            
 $data = $stmt->fetch(PDO::FETCH_ASSOC);
            
 $count = $data['count(*)'];


            /Number of rows/



            http://php.net/manual/en/pdo.prepare.php






            share|improve this answer















            You can use below code for no of rows..



            /* Number of rows.*/



             $stmt->execute();
            
 $data = $stmt->fetch(PDO::FETCH_ASSOC);
            
 $count = $data['count(*)'];


            /Number of rows/



            http://php.net/manual/en/pdo.prepare.php







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Jan 3 at 5:40

























            answered Jan 3 at 5:06









            Umar AbdullahUmar Abdullah

            717419




            717419













            • PDOStatement does not have a num_rows property

              – Phil
              Jan 3 at 5:16











            • num_rows is there. can you cross check @Phil

              – Umar Abdullah
              Jan 3 at 5:21











            • OP is using PDO, not MySQLi

              – Phil
              Jan 3 at 5:21











            • You are right @ph

              – Umar Abdullah
              Jan 3 at 5:29



















            • PDOStatement does not have a num_rows property

              – Phil
              Jan 3 at 5:16











            • num_rows is there. can you cross check @Phil

              – Umar Abdullah
              Jan 3 at 5:21











            • OP is using PDO, not MySQLi

              – Phil
              Jan 3 at 5:21











            • You are right @ph

              – Umar Abdullah
              Jan 3 at 5:29

















            PDOStatement does not have a num_rows property

            – Phil
            Jan 3 at 5:16





            PDOStatement does not have a num_rows property

            – Phil
            Jan 3 at 5:16













            num_rows is there. can you cross check @Phil

            – Umar Abdullah
            Jan 3 at 5:21





            num_rows is there. can you cross check @Phil

            – Umar Abdullah
            Jan 3 at 5:21













            OP is using PDO, not MySQLi

            – Phil
            Jan 3 at 5:21





            OP is using PDO, not MySQLi

            – Phil
            Jan 3 at 5:21













            You are right @ph

            – Umar Abdullah
            Jan 3 at 5:29





            You are right @ph

            – Umar Abdullah
            Jan 3 at 5:29











            -1














            $prep_stmt = $conn->query("SELECT * FROM eggs WHERE `egg_dist` = 5 limit 4");
            
$len = $prep_stmt->num_rows;
            
while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    $col = array_keys($row);
            
    for($y = 0; $y < 4; $y++){
            
        echo "<div class = 'col-3 text-center'>".$row[$col[$y]]."</div>";
            
    }
            
    echo "</div>";
            
}



            OR if want print only name



            while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    echo "<div class = 'col-3 text-center'>".$row['name']."</div>";
            
    echo "</div>";
            
}





            share|improve this answer



















            • 1





              PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

              – Phil
              Jan 3 at 5:20


















            -1














            $prep_stmt = $conn->query("SELECT * FROM eggs WHERE `egg_dist` = 5 limit 4");
            
$len = $prep_stmt->num_rows;
            
while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    $col = array_keys($row);
            
    for($y = 0; $y < 4; $y++){
            
        echo "<div class = 'col-3 text-center'>".$row[$col[$y]]."</div>";
            
    }
            
    echo "</div>";
            
}



            OR if want print only name



            while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    echo "<div class = 'col-3 text-center'>".$row['name']."</div>";
            
    echo "</div>";
            
}





            share|improve this answer



















            • 1





              PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

              – Phil
              Jan 3 at 5:20
















            -1












            -1








            -1







            $prep_stmt = $conn->query("SELECT * FROM eggs WHERE `egg_dist` = 5 limit 4");
            
$len = $prep_stmt->num_rows;
            
while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    $col = array_keys($row);
            
    for($y = 0; $y < 4; $y++){
            
        echo "<div class = 'col-3 text-center'>".$row[$col[$y]]."</div>";
            
    }
            
    echo "</div>";
            
}



            OR if want print only name



            while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    echo "<div class = 'col-3 text-center'>".$row['name']."</div>";
            
    echo "</div>";
            
}





            share|improve this answer













            $prep_stmt = $conn->query("SELECT * FROM eggs WHERE `egg_dist` = 5 limit 4");
            
$len = $prep_stmt->num_rows;
            
while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    $col = array_keys($row);
            
    for($y = 0; $y < 4; $y++){
            
        echo "<div class = 'col-3 text-center'>".$row[$col[$y]]."</div>";
            
    }
            
    echo "</div>";
            
}



            OR if want print only name



            while($row = $prep_stmt->fetch_assoc()) {
            
    echo "<div class ='row'>";
            
    echo "<div class = 'col-3 text-center'>".$row['name']."</div>";
            
    echo "</div>";
            
}






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Jan 3 at 5:17









            Bharoo JangidBharoo Jangid

            454




            454








            • 1





              PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

              – Phil
              Jan 3 at 5:20
















            • 1





              PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

              – Phil
              Jan 3 at 5:20










            1




            1





            PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

            – Phil
            Jan 3 at 5:20







            PDOStatement does not have a num_rows property. Nor does it have a fetch_assoc() method

            – Phil
            Jan 3 at 5:20




















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