Intelligently removing excess indention from a string - php

Question

I'm trying to remove some excessive indention from a string, in this case it's SQL, so it can be put into a log file. So I need the find the smallest amount of indention (aka tabs) and remove it from the front of each line, but the following code ends up printing out exactly the same, any ideas?
In other words, I want to take the following (NOTE: StackOverflow editor converted my tabs to spaces, in the code, a tab simulates 4 spaces, but it really is a \t character)
SELECT
blah
FROM
table
WHERE
id=1
and convert it to
SELECT
blah
FROM
table
WHERE
id=1
here's the code I tried and fails
$sql = '
SELECT
blah
FROM
table
WHERE
id=1
';
// it's most likely idented SQL, remove any idention
$lines = explode("\n", $sql);
$space_count = array();
foreach ( $lines as $line )
{
preg_match('/^(\t+)/', $line, $matches);
$space_count[] = strlen($matches[0]);
}
$min_tab_count = min($space_count);
$place = 0;
foreach ( $lines as $line )
{
$lines[$place] = preg_replace('/^\t{'. $min_tab_count .'}/', '', $line);
$place++;
}
$sql = implode("\n", $lines);
print '<pre>'. $sql .'</pre>';

Answer 1

It seems the problem was
strlen($matches[0])
returns 0 and 1 for the first and last line, which isn't the 3 I actually wanted as the minimum, so a quick hack was to
trim the SQL
skip counting the length if it's less than 2
Not the most elegant solution, but it'll always work because tabs are usually in the 4+ count in this code. Here's the fixed code:
$sql = '
SELECT
blah
FROM
table
WHERE
id=1
';
// it's most likely idented SQL, remove any idention
$lines = explode("\n", $sql);
$space_count = array();
foreach ( $lines as $line )
{
preg_match('/^(\t+)/', $line, $matches);
if ( strlen($matches[0]) > 1 )
{
$space_count[] = strlen($matches[0]);
}
}
$min_tab_count = min($space_count);
$place = 0;
foreach ( $lines as $line )
{
$lines[$place] = preg_replace('/^\t{'. $min_tab_count .'}/', '', $line);
$place++;
}
$sql = implode("\n", $lines);
print $sql;

Answer 2

private function cleanIndentation($str) {
$content = '';
foreach(preg_split("/((\r?\n)|(\r\n?))/", trim($str)) as $line) {
$content .= " " . trim($line) . PHP_EOL;
}
return $content;
}