REQUEST: A-Z index in PHP

Original - php Code <?php // function to create an index link given the index name function link($letter){ return "<a href="{$_SERVER['PHP_SELF']}?letter=$letter">$letter</a>"; } // create a general purpose array of index names/links // change the elements of this array to change how the links/files are organized $link_array = array(); $link_array[] = "0-9"; $link_array[] = "A"; $link_array[] = "B"; $link_array[] = "C"; $link_array[] = "D-F"; $link_array[] = "G-H"; $link_array[] = "I"; $link_array[] = "J-L"; $link_array[] = "M"; $link_array[] = "N-O"; $link_array[] = "P"; $link_array[] = "Q-S"; $link_array[] = "T"; $link_array[] = "U"; $link_array[] = "V-Z"; // form the index link $content =""; foreach($link_array as $value){ $content .= " ".link($value)." |"; } $content = rtrim($content, "|"); // output the index link at the top of the page echo "<h4 style="text-align: center">Jump to: [".$content."]</h4>"; If(isset($_GET['letter'])){ $letter = trim($_GET['letter']); } else { exit; // on the first pass, exit at this point } // echo the current index letter selected echo "<h2 style="text-align: center">$letter</h2>"; // process this for a range of letters $first_letter = strtoupper(substr($letter, 0, 1)); // get first letter and insure it is upper case $last_letter = strtoupper(substr($letter, -1, 1)); // get last letter and insure it is upper case $current_letter = $first_letter; // get the starting letter (this will be upper case) // loop for all letters in a range while($current_letter <= $last_letter){ // ********************* change the following code, up to the next ****** comment, to retrieve from your database // get a directory listing of all lower and upper case files that start with the current letter $current_letter = strtolower($current_letter); $lowercase = glob("$current_letter*.*"); $current_letter = strtoupper($current_letter); $uppercase = glob("$current_letter*.*"); $bothcase = array_merge($lowercase,$uppercase); // sort the array of file names, ignoring case and handling numbers correctly natcasesort($bothcase); // display a link for each file name foreach ($bothcase as $filename) { echo "<a href="fdownload.php?file=".urlencode($filename)."">$filename</a><br />n"; } // ********************** the following code remains the same // step to the next letter in a range (if any) $current_letter++; // note, when this is Z, it becomes AA // special handling for incrementing "Z" if($current_letter == "AA"){ break; } } // end of while loop // output the index link at the bottom of the page echo "<h4 style="text-align: center">Jump to: [".$content."]</h4>"; ?>

 
<?php
// function to create an index link given the index name
function link($letter){
return "<a href="{$_SERVER['PHP_SELF']}?letter=$letter">$letter</a>";
}
 
// create a general purpose array of index names/links
// change the elements of this array to change how the links/files are organized
$link_array = array();
$link_array[] = "0-9";
$link_array[] = "A";
$link_array[] = "B";
$link_array[] = "C";
$link_array[] = "D-F";
$link_array[] = "G-H";
$link_array[] = "I";
$link_array[] = "J-L";
$link_array[] = "M";
$link_array[] = "N-O";
$link_array[] = "P";
$link_array[] = "Q-S";
$link_array[] = "T";
$link_array[] = "U";
$link_array[] = "V-Z";
 
// form the index link
$content ="";
foreach($link_array as $value){
$content .= " ".link($value)." |";
}
$content = rtrim($content, "|");
 
// output the index link at the top of the page
echo "<h4 style="text-align: center">Jump to: [".$content."]</h4>";
 
If(isset($_GET['letter'])){
$letter = trim($_GET['letter']);
} else {
exit; // on the first pass, exit at this point
}
 
// echo the current index letter selected
echo "<h2 style="text-align: center">$letter</h2>";
 
// process this for a range of letters 
$first_letter = strtoupper(substr($letter, 0, 1)); // get first letter and insure it is upper case
$last_letter = strtoupper(substr($letter, -1, 1)); // get last letter and insure it is upper case
 
$current_letter = $first_letter; // get the starting letter (this will be upper case)
 
// loop for all letters in a range
while($current_letter <= $last_letter){
 
// ********************* change the following code, up to the next ****** comment, to retrieve from your database
// get a directory listing of all lower and upper case files that start with the current letter
$current_letter = strtolower($current_letter);
$lowercase = glob("$current_letter*.*");
$current_letter = strtoupper($current_letter);
$uppercase = glob("$current_letter*.*");
$bothcase = array_merge($lowercase,$uppercase);
 
// sort the array of file names, ignoring case and handling numbers correctly
natcasesort($bothcase);
 
// display a link for each file name 
foreach ($bothcase as $filename) {
echo "<a href="fdownload.php?file=".urlencode($filename)."">$filename</a><br />n";
}
 
// ********************** the following code remains the same
// step to the next letter in a range (if any)
$current_letter++; // note, when this is Z, it becomes AA
 
// special handling for incrementing "Z"
if($current_letter == "AA"){
break;
}
 
} // end of while loop
 
// output the index link at the bottom of the page
echo "<h4 style="text-align: center">Jump to: [".$content."]</h4>";
?>