使用PHP将数据库查询到关联数组

Question

I am trying to grab data from my database and place in a format so I can call field1 and return field2.

In my mind I think this:

while($row = mysqli_fetch_assoc($result)) {
    $aa = $row["field1"];
    $bb = $row["field2"];
}

$cc = array(“$aa”=>”$bb”);

Will compute this:

$cc = array(
    "Row1a"=>"Stuff in field2 row1b",
    "Row2a"=>"Stuff in field2 Row2b",
    "Row3a"=>"Stuff in field2 Row3b",
    "Row4a"=>"Stuff in field2 Row4b",
    );

After this I will be able to:

echo $cc('Row1a');

To display:

Stuff in field2 row1b

Answer 1

Please try this and let me know if it meets your requirements

<?php

$result=NULL;

while($row = mysqli_fetch_assoc($result)) {
    $aa = $row["field1"];
    $bb = $row["field2"];
    $result[$aa]=$bb;
}

echo $result['Row1a'];

?>

Edited code Then this should meet your requirement

<?php
$search=$_POST['userText'];
$query= "SELECT  * FROM table WHERE field1='".$search."';";

$result=mysql_query($query,$con);
$output=NULL;
if(mysql_num_rows($result)>0) //to check if at least 1 match found
{
    $array=mysql_fetch_array($result);
    $output=$array['field2'];
}
if(isset($output))
    echo $output; // can be returned as needed
else
    echo 'No match found'; 

?>

Answer 2

Here's one way. If there aren't an even number of elements in $row then the odd last one will be set to Last . But obviously this overwrites $result each time so you probably want a multidimensional array using a counter and $result[$i] or some such:

foreach(array_chunk($row, 2) as $pair) {
    if(isset($pair[0], $pair[1])) {
        $result[$pair[0]] = $pair[1];
    }
}
if(isset($pair[0])) {
    $result['Last'] = $pair[0];
}