current community

your communities

more stack exchange communities

Stack Exchange
tour help
stack overflow careers
Take the 2-minute tour ×
Stack Overflow is a question and answer site for professional and enthusiast programmers. It's 100% free, no registration required.
up vote 1 down vote favorite

This is what I have:

$prevtag = "1,2,5";

$arr;
$arr["1"] = "BOOKS";
$arr["2"] = "MAGAZINES";
$arr["3"] = "PAMPHLETS";
$arr["4"] = "CD'S";
$arr["5"] = "DVD'S";

And I need to check if any of $prevtag exists in $arr and then echo 5 checkboxes:

foreach ($arr as $key => $value) {
    $checked = in_array($prevtag,$arr) ? '' : 'checked="checked"';
    echo "<input name=\"txtTags".$key."\" type=\"checkbox\" id=\"txtTags".$key."\" value=\"on\" $checked />\n";
    echo "<label for=\"txtTags".$key."\">".$value."</label>\n";
}

But I'm getting all checked and not just the ones in $prevtag - What am I doing wrong?

share|improve this question
    
You mean key in array? –  Framework Apr 13 '11 at 11:42

5 Answers 5

up vote 0 down vote accepted

in_array($prevtag,$arr) is checking if the array $arr contains value 1,2,5

so you can do this:

$checked = in_array($key, explode(',', $prevtag)) ? '' : 'checked="checked"';
share|improve this answer
    
Perfect! Thanks! –  mountainbear Apr 13 '11 at 11:55
up vote 2 down vote

In your example $prevtag is a string and not an array so you cannot use in_array() on it.

So you can try:

$prevtag = explode(',', $prevtag);

And then:

foreach ($arr as $key => $value) {
    $checked = in_array($key, $prevtag) ? '' : 'checked="checked"';
    echo "<input name=\"txtTags".$key."\" type=\"checkbox\" id=\"txtTags".$key."\" value=\"on\" $checked />\n";
    echo "<label for=\"txtTags".$key."\">".$value."</label>\n";
}
share|improve this answer
    
thanks - I made it a string –  mountainbear Apr 13 '11 at 12:00
up vote 1 down vote

Make $prevtag an array and do something like this

$preArray=explode(",",$prevtag);

foreach ($arr as $key => $value) {
    $checked = in_array($key,$preArray) ? 'checked="checked"' : '';
    ...
}
share|improve this answer
up vote 1 down vote 
$checked = strpos( $prevtag, (string)$key ) ? '' : 'checked="checked"';

$prevtag is string not array -> in_array() would not apply

share|improve this answer
    
thanks! - I made it a string –  mountainbear Apr 13 '11 at 12:00
up vote 0 down vote

you are checking if '1,2,5' is inside 'books' or 'magazines' etc

$prevtag = array(1,2,5);
$checked = in_array($key, $prevtag) ? 'checked="checked"' : ''
share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.