Please help me to create an array from a field of my DB. That field has records separated by comma. Below is the illustration:
ID | article_title_fld | article_tags_fld |
----------------------------------------------------------------------
1 | Learn PHP | PHP, coding, scripting |
3 | Javascript Tutorial | Javascript, scripting, tutorial |
4 | Styling with CSS | CSS, tutorial, web design |
I want to collect all records in the article_tags_fld then put it into 1 array. Perhaps I named it $array1, and the print out as below:
Array
(
[0] => PHP
[1] => coding
[2] => scripting
[3] => Javascript
[4] => scripting
[5] => tutorial
[6] => CSS
[7] => tutorial
[8] => web design
)
$array1 = array();
$result = mysql_query("SELECT article_tags_fld FROM MY_TABLE");
while ($row = mysql_fetch_assoc($result)) {
$array1 = array_merge($array1, array_map('trim', explode(",", $row['article_tags_fld'])));
}
explode will split a string by a delimiter.
array_merge will combine two arrays.
array_map will apply trim to all elements.
trim will remove any white space on either side of your tags.
UPDATED
you can do also this way by using mysql_fetch_Array
$array1 = array();
$result = mysql_query("SELECT ID , article_tags_fld FROM my_table");
while ($row = mysql_fetch_array($result, MYSQL_BOTH)) {
$array1[] = $row['article_tags_fld'];
// OR
// $array1[] = $row[1];
}
ADDED: in one line:
// use this version to behave as in your example..
$array1 = array_map('trim',explode(',',implode(',',$array1)));
// use this version with array_unique for a non duplicate way...
$array1 = array_unique(array_map('trim',explode(',',implode(',',$array1))));
DISPLAY:
print_r( $array1 );
Array
(
[0] => PHP
[1] => coding
[2] => scripting
[3] => Javascript
[4] => scripting
[5] => tutorial
[6] => CSS
[7] => tutorial
[8] => web design
)
Actually, I would normalize the table into multiple tables first.
articles
article_ID | article_title_fld |
----------------------------------------
1 | Learn PHP |
3 | Javascript Tutorial |
4 | Styling with CSS |
tags
tag_ID | tag_title_fld |
------------------------
1 | PHP |
2 | coding |
3 | scripting |
4 | Javascript |
5 | tutorial |
6 | CSS |
7 | web design |
article_tags
article_ID | tag_ID |
---------------------
1 | 1 |
1 | 2 |
1 | 3 |
3 | 4 |
3 | 3 |
3 | 5 |
4 | 6 |
4 | 5 |
4 | 7 |
and then in the PHP
$array1 = array();
$result = mysql_query("
SELECT tag_title_fld
FROM tags
JOIN articles_tags USING(tag_ID)
ORDER BY article.article_ID
");
foreach($result as $row) {
$array1[] = $row['tag_title_fld'];
// With count. See below for the query it goes with
// $array2 = array();
// $array2['tag'] = $row['tag_title_fld'];
// $array2['count'] = $row['tag_count'];
// $array1[] = $array2;
}
Of course, if you just wanted a list of the tags without duplicates, you'd use this query instead.
SELECT tag_title_fld
FROM tags
and if you wanted them with a count of how often they're used:
SELECT tag_title_fld, COUNT(*) AS tag_count
FROM tags
JOIN articles_tags USING(tag_ID)
GROUP BY tag_title_fld
This should output everything.
$pdo = new PDO( /* CONNECTION */ );
$stmt = $pdo->query( 'SELECT article_tags_fld FROM TABLENAME' );
function mapFunc( $row ){ return explode( ',', $row[ 0 ] ) }
$all = array();
foreach( array_map( 'mapFunc', $stmt->fetchAll() ) as $row )
{
$all = array_merge( $all, $row );
}
// $all now holds all of the values.