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use a php function and not exclusively mysql for my learning

Posted on 2014-02-17
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Last Modified: 2014-03-06
using mysqli, or pdo

I would like a php function that prepends 'begin' and postpends 'end' to an existing varchar field

table.column1 int primary key autoincrement
table.column2 varchar
table.column3 varchar


example output
5454  begin5454end
656    begin656end
4        begin4end
A        beginAend


while this can be done with only mysql

UPDATE table SET column3 = CONCAT("begin",column2,"end")

I would like to use a php function so I can learn php functions.
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Question by:rgb192
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4 Comments
 
LVL 109

Expert Comment

by:Ray Paseur
ID: 39865544
Untested code, but probably OK  in theory:

<?php // RAY_temp_rgb192.php
error_reporting(E_ALL);

// A STARTING STRING
$old = '5454';

// IN OPEN CODE
$new = 'begin' . $old . 'end'; 

// WITH A FUNCTION
function pend($str, $alpha = 'begin', $omega = 'end')
{
    return $alpha . $str . $omega;
}

// VIA A FUNCTION CALL
echo pend($old);

Open in new window

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Author Comment

by:rgb192
ID: 39865549
but how would this work with a select and update

making sure to update the correct row.
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LVL 109

Accepted Solution

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Ray Paseur earned 500 total points
ID: 39865569
You would SELECT the column with the AUTO_INCREMENT id (Primary key) and the column you wanted to add information to.  With each row of the results set you would use the pend() function to change the column you wanted to add information to.  Then you would UPDATE the table, SET column you wanted with new information WHERE the id matched, LIMIT 1.
0
 

Author Closing Comment

by:rgb192
ID: 39911432
okay this is an example of a mysql connection and php function combined.

Thanks.
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