foreach two arrays in php? - php

Question

I have two arrays like this
$slike = Array('artist2-1.jpg', 'artist2-2.jpg', 'artist2-3.jpg', 'artist2-4.jpg');
$slikethumb = Array('artist2-1_thumb.jpg',
'artist2-2_thumb.jpg',
'artist2-3_thumb.jpg',
'artist2-4_thumb.jpg');
When I foreach two arrays I want to get this output on view
echo'<a href='.$slike.'><img src='.$slikethumb.'></a>';
I know how to foreach one array, but what I have to do to combine two arrays in one foreach?

Answer 1

If those arrays are sorted correctly and both have same number of elements:
foreach($slike as $i => $value){
echo'<a href='.$value.'><img src='.$slikethumb[$i].'></a>';
}

Answer 2

Edit:
Considering your related question, You might want to think about scanning your directoy using glob and a more specific pattern, something along the lines of:
$sLike = glob('{0,1,2,3,4,5,6,7,8,9}.jpg',GLOB_BRACE);
//selects all .jpg files with names ending with number.jpg, so no _thumb.jpg files
Then, with this in mind and in light of your comment. How to remove the file extensions:
$sLike = array();//the array from dir scan
$clean = array();
foreach($sLike as $file)
{
$clean[] = substr($file, 0, strpos($file, '.')*-1);//get file name
}
$format = '<img src="%1$s_thumb.jpg" />';//output format
foreach($clean as $like)
{
    printf($format, $like);
}
Or, with a more liberal pattern used for the glob call, and if you want to go with option 2 (the one with different extensions per file):
$sLike = array();//the array from dir scan
$clean = array();
foreach($sLike as $file)
{
$endOffset = strpos($file, '.')*-1;
$clean[] = array(
substr($file, 0, $endOffset),//get file name
substr($file,$endOffset)//get extension, includes the . char!
);
}
$format = '<img src="%1$s_thumb%2$s" />';//output format
foreach($clean as $like)
{
echo vsprintf($format, $like);
}
That's about it...
What I'd do is use but a single array. The base string is the same for both images:
$slike=array(
'artist2-1',
'artist2-2',
'artist2-3',
'artist2-4'
);//remove extensions
$format = '<img src="%1$s_thumb.jpg" />';//output format
foreach($slike as $like)
{
printf($format, $like);
}
That will give you what you want, without there ver being a need for 2 arrays, as you can see on this codepad.
Benefits of this approach:
only constructs 1 array, not 2
uses printf which translates internally to a fprintf(stdout, "<your format>", zval*$like); in C, which is fast.
No excess fat: there's very little repetition. You could even change the format to artist2-%s.jpg"><img src="artist2-%s_thumb.jpg" />, and only stores the numbers in the array, but that's taking it absurdly far.
Short, and concise code
Of course, there are caveats:
less readable & maintainable code
If ever you add 1 image with a different extension (png), you'll have to refactor...
The choice is yours. If different extensions is likely to happen, you could change the code above to something like:
$slike=array(
array('artist2-1','jpg'),
array('artist2-2','png'),
array('artist2-3','gif'),
array('artist2-4','jpeg'),
);//remove extensions
$format = '<img src="%1$s_thumb.%2$s" />';//output format
foreach($slike as $like)
{
echo vsprintf($format, $like);
}
As you can see on this codepad, that'll work like a charm, too

Answer 3

If same number of elements in both array & sorted then,
foreach($slikethumb as $key => $val) {
echo '<a href='.$slike[$key].'><img src='.$val.'></a>';
}

Answer 4

You can use for loop
for($i = 0; $i< count($slike); $i++)
{
$slike_val = $slike[$i];
$slikethumb_val = $slikethumb[$i];
echo'<a href='.$slike_val.'><img src='.$slikethumb_val.'></a>';
}

Answer 5

You will try
foreach($slike as $key=>$slike_val)
echo'<a href='.$slike_val.'><img src='.$slikethumb[$key].'></a>';

Answer 6

Try like this:
<?php
$slike = array('artist2-1.jpg', 'artist2-2.jpg', 'artist2-3.jpg', 'artist2-4.jpg');
$slikethumb = array('artist2-1_thumb.jpg', 'artist2-2_thumb.jpg', 'artist2-3_thumb.jpg', 'artist2-4_thumb.jpg');
foreach($slike as $key1 => $value1)
{
echo $value1."--------->".$slikethumb[$key1]."<br />";
}
?>
Thanks

Answer 7

foreach ($slike as $key=>$img) {
print '<a href='.$img.'><img src='.$slikethumb[$key].'></a>';
}
Or if you want one which is not based on the ordering....
foreach ($slike as $key=>$img) {
list($name, $ext)=explode('.', $img);
$thumb=$name . '_thumb.' . $ext;
if (in_array($thumb, $slikethumb)) {
print '<a href='.$img.'><img src='.$thumb.'></a>';
} else {
...?
}
}