PHP: Display comma after each element except the last. Using 'for' statement and no 'implode/explode'

I have this simple for loop to echo an array:

for ($i = 0; $i < count($director); $i++) {
   echo '<a href="person.php?id='.$director[$i]["id"].'">'.$director[$i]["name"].'</a>';
}

The problem here is t开发者_Go百科hat when more than one element is in the array then I get everything echoed without any space between. I want to separate each element with a comma except the last one.

I can't use implode so I'm looking for another solution

This should work. It's better I think to call count() once rather than on every loop iteration.

$count = count($director);
for ($i = 0; $i < $count; $i++) {
   echo '<a href="person.php?id='.$director[$i]["id"].'">'.$director[$i]["name"].'</a>';

   if ($i < ($count - 1)) {
      echo ', ';
   }
}

If I remember PHP syntax correctly, this might also help:

$str = "";
for ($i = 0; $i < count($director); $i++) {
   $str .= '<a href="person.php?id='.$director[$i]["id"].'">'.$director[$i]["name"].'</a>, ';
}
$str = trim($str, ", ");

A better solution is to avoid looping altogether. I've ignored building the links for the sake of clarity. Note that I don't believe the inability to use implode is a condition. I believe it's a simple statement of, "I can't see how to make this work using implode, so I did it this way instead."

$last_entry = array_pop($director);
if(count($director) > 0) {
    echo implode(", ", $director) . " and " . $last_entry;
} else {
    echo $last_entry;
}

My preferred method:

$links = [];
for ($i = 0; $i < count($director); $i++) {
  $links[] = '<a href="person.php?id='.$director[$i]["id"].'">' .
      $director[$i]["name"] . '</a>';
}
echo implode(', ', $links);

Or

$output = "";
for ($i = 0; $i < count($director); $i++) {
  if ($output) {
    $output .= ", ";
  }
  $output .= '<a href="person.php?id='.$director[$i]["id"].'">' .
      $director[$i]["name"].'</a>';
}
echo $output;

for ( $i=0 ; $i < count($arr)-1 ; $i++ )
{
    echo ( $arr[$i]."," );
}
echo ( $arr[count($arr)-1] );

$number = count($director);
for ($i = 0; $i < $number; $i++) {
    echo '<a href="person.php?id='.$director[$i]["id"].'">'.$director[$i]["name"].'</a>';
    if($i < $number - 1){
        echo ', ';
    }
}

Oops, I didn't saw the reply by Tom Haigh, we came with practically the same.

How about something like this? You may want to store the result of "count($director)" in a variable outside the loop so that you do not have to waste resources recalculating it each time the loop is run.

for($i=0; $i<count($director);$i++){
   echo '<a href="person.php?id='.$director[$i]["id"].'">'.$director[$i]["name"].'</a>';
   if($i!=count($director)-1){echo ',';}
}

Well, foreach contains for :-)

foreach ($director as $key => $person) {
    if ($key !== 0) echo ', ';
    echo '<a href="person.php?id='.urlencode($person['id']).'">'.$person['name'].'</a>';
}

// RENAMED $director to $directors

$links = '';
foreach ($directors AS $director) {
    $links .= "<a href=\"person.php?id={director['id']}\">{$director['name']}</a>";
    if (true !== empty($links)) {
        $links .= ', ';
    }
}

echo $links;

foreach ($strings as $string){
    $superstring .= $string . ', ';
}
$echostring = substr_replace($superstring ,"",-2);
echo $echostring;

Here's my 2 lines solution

// Create your Array
$cities = Array("Rome", "Florence", "Venice");

// implode them
$list = trim(implode (", ", $cities))  ;
// remove last comma
$list = substr ( $list,0 ,strlen( $list ) );

//check result
die ($list);

$count =1;
for ($i = 0; $i < count($director); $i++) {
if ($count!=1) {
echo ' , ';
}
echo ''.$director[$i]["name"].'';
$count++;
}