The FOREACH below is giving me the error:
Invalid argument supplied for foreach()
Not surprising as the $match_words will contain a boolean result from
shuffle. Shuffle works directly on the variable it is given and returns
true or false, depending on success. rtfm ;-)
Does anyone understand what I have done to cause this error?
#query for words
$query =
SELECT `reference` , `word` , `explanation`
FROM `Bible_dictionary`
WHERE `live` =1
ORDER BY RAND( )
LIMIT 5
;
$words_match_up_result=mysql_query($query);
$records_found=mysql_numrows($words_match_up_result);
echo $records_found . br; # output is 5
#create array from mySQL query
$words = array();
$explanations = array();
$i=1;
while ( $i = $records_found ) {
$words[$i] = stripslashes( mysql_result($words_match_up_result,($i
-1),word) );
$explanations[$i] = stripslashes( mysql_result($words_match_up_result,($i
-1),explanation) );
++$i;
}
#shuffle arrays
$match_words = shuffle ( $words );
$match_explanations = shuffle ( $explanations );
change to:
$match_words = $words;
shuffle($match_words);
$match_explanations = $explanations;
shuffle($match_explanations);
However if these need to stay in sync this will not work. i.e if a
explanation's index needs to match the corresponding word's index, then
you'll have to do this another way. But as I understand your need here,
this isn't a problem?
#display words on the screen
foreach($match_words as $word) {
echo $word . br /\r\n;
}
The Verse of the Day
Encouragement from Gods Word
http://www.TheVerseOfTheDay.info
From: Ron Piggott
Sent: Sunday, January 02, 2011 5:54 PM
To: php-db@lists.php.net
Subject: Word Activity Application
I am working on a word activity --- matching words and their definitions.
I want to display 5 words on the left hand side and the 5 definitions on the
right hand side. But I want the definitions displayed in a different order
than the words so the user submits their answer.
Should I use PHP to display the definitions in random order? OR Is there a
way do this in mySQL that would mix and match results from different rows?
This is the query gives me the 5 results
SELECT `reference` , `word` , `explanation`
FROM `Bible_dictionary`
WHERE `live` =1
ORDER BY RAND( )
LIMIT 5
Ron
The Verse of the Day
Encouragement from Gods Word
http://www.TheVerseOfTheDay.info
--
Niel Archer
niel.archer (at) blueyonder.co.uk
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