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<?php
$TABLE = $_GET["indexes"];
$index_types = array("PRIMARY", "UNIQUE", "INDEX");
$table_status = table_status($TABLE);
if (eregi("MyISAM|M?aria", $table_status["Engine"])) {
$index_types[] = "FULLTEXT";
}
$indexes = indexes($TABLE);
if ($jush == "sqlite") { // doesn't support primary key
unset($index_types[0]);
unset($indexes[""]);
}
if ($_POST && !$error && !$_POST["add"]) {
$alter = array();
foreach ($_POST["indexes"] as $index) {
$name = $index["name"];
if (in_array($index["type"], $index_types)) {
$columns = array();
$lengths = array();
$set = array();
ksort($index["columns"]);
foreach ($index["columns"] as $key => $column) {
if ($column != "") {
$length = $index["lengths"][$key];
$set[] = idf_escape($column) . ($length ? "(" . (+$length) . ")" : "");
$columns[] = $column;
$lengths[] = ($length ? $length : null);
}
}
if ($columns) {
$existing = $indexes[$name];
if ($existing) {
ksort($existing["columns"]);
ksort($existing["lengths"]);
if ($index["type"] == $existing["type"] && array_values($existing["columns"]) === $columns && (!$existing["lengths"] || array_values($existing["lengths"]) === $lengths)) {
// skip existing index
unset($indexes[$name]);
continue;
}
}
$alter[] = array($index["type"], $name, "(" . implode(", ", $set) . ")");
}
}
}
// drop removed indexes
foreach ($indexes as $name => $existing) {
$alter[] = array($existing["type"], $name, "DROP");
}
if (!$alter) {
redirect(ME . "table=" . urlencode($TABLE));
}
queries_redirect(ME . "table=" . urlencode($TABLE), lang('Indexes have been altered.'), alter_indexes($TABLE, $alter));
}

page_header(lang('Indexes'), $error, array("table" => $TABLE), $TABLE);

$fields = array_keys(fields($TABLE));
$row = array("indexes" => $indexes);
if ($_POST) {
$row = $_POST;
if ($_POST["add"]) {
foreach ($row["indexes"] as $key => $index) {
if ($index["columns"][count($index["columns"])] != "") {
$row["indexes"][$key]["columns"][] = "";
}
}
$index = end($row["indexes"]);
if ($index["type"] || array_filter($index["columns"], 'strlen') || array_filter($index["lengths"], 'strlen')) {
$row["indexes"][] = array("columns" => array(1 => ""));
}
}
} else {
foreach ($row["indexes"] as $key => $index) {
$row["indexes"][$key]["name"] = $key;
$row["indexes"][$key]["columns"][] = "";
}
$row["indexes"][] = array("columns" => array(1 => ""));
}
?>

<form action="" method="post">
<table cellspacing="0" class="nowrap">
<thead><tr><th><?php echo lang('Index Type'); ?><th><?php echo lang('Column (length)'); ?><th><?php echo lang('Name'); ?></thead>
<?php
$j = 1;
foreach ($row["indexes"] as $index) {
echo "<tr><td>" . html_select("indexes[$j][type]", array(-1 => "") + $index_types, $index["type"], ($j == count($row["indexes"]) ? "indexesAddRow(this);" : 1)) . "<td>";
ksort($index["columns"]);
$i = 1;
foreach ($index["columns"] as $key => $column) {
echo "<span>" . html_select("indexes[$j][columns][$i]", array(-1 => "") + $fields, $column, ($i == count($index["columns"]) ? "indexesAddColumn" : "indexesChangeColumn") . "(this, '" . js_escape($jush == "sql" ? "" : $_GET["indexes"] . "_") . "');");
echo "<input name='indexes[$j][lengths][$i]' size='2' value='" . h($index["lengths"][$key]) . "'> </span>"; //! hide for non-MySQL drivers, add ASC|DESC
$i++;
}
echo "<td><input name='indexes[$j][name]' value='" . h($index["name"]) . "'>\n";
$j++;
}
?>
</table>
<p>
<input type="submit" value="<?php echo lang('Save'); ?>">
<noscript><p><input type="submit" name="add" value="<?php echo lang('Add next'); ?>"></noscript>
<input type="hidden" name="token" value="<?php echo $token; ?>">
</form>
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