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  1. PO
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    <p>Try this one:</p> <pre><code>function getRelativePath($from, $to) { // some compatibility fixes for Windows paths $from = is_dir($from) ? rtrim($from, '\/') . '/' : $from; $to = is_dir($to) ? rtrim($to, '\/') . '/' : $to; $from = str_replace('\\', '/', $from); $to = str_replace('\\', '/', $to); $from = explode('/', $from); $to = explode('/', $to); $relPath = $to; foreach($from as $depth =&gt; $dir) { // find first non-matching dir if($dir === $to[$depth]) { // ignore this directory array_shift($relPath); } else { // get number of remaining dirs to $from $remaining = count($from) - $depth; if($remaining &gt; 1) { // add traversals up to first matching dir $padLength = (count($relPath) + $remaining - 1) * -1; $relPath = array_pad($relPath, $padLength, '..'); break; } else { $relPath[0] = './' . $relPath[0]; } } } return implode('/', $relPath); } </code></pre> <p>This will give</p> <pre><code>$a="/home/a.php"; $b="/home/root/b/b.php"; echo getRelativePath($a,$b), PHP_EOL; // ./root/b/b.php </code></pre> <p>and</p> <pre><code>$a="/home/apache/a/a.php"; $b="/home/root/b/b.php"; echo getRelativePath($a,$b), PHP_EOL; // ../../root/b/b.php </code></pre> <p>and</p> <pre><code>$a="/home/root/a/a.php"; $b="/home/apache/htdocs/b/en/b.php"; echo getRelativePath($a,$b), PHP_EOL; // ../../apache/htdocs/b/en/b.php </code></pre> <p>and</p> <pre><code>$a="/home/apache/htdocs/b/en/b.php"; $b="/home/root/a/a.php"; echo getRelativePath($a,$b), PHP_EOL; // ../../../../root/a/a.php </code></pre>
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    1. POGetting relative path from absolute path in PHP
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    1. COLooks like we came up with almost the exact same algorithm, mine in english, yours in PHP (me being too lazy too code it, you not being).
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    2. COI tested this and all the others functions and you can find my benchmarks results in my post scrolling down. This implementation came out to be the best, so I suggest using this one! ;-)
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      1. USlucaferrario
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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