note 49437 added to function.strlen
| From: | corey at eyewantmedia dot com | Date: | Thu, 27 Jan 2005 21:39:32 +0000 |
| Subject: | note 49437 added to function.strlen | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-84091@lists.php.net to get a copy of this message | ||
I found that I needed something a little beyond array pushing and popping so I could share a stack
between calls to a script. I wrote these quick functions, and while they are not all that efficient,
they are certainly better than hitting a database server to manage a stack between script calls.
Anyway, here we go.
function FilePush($filename, $thingToPush, $terminator="\n") {
$oldStuff = file_get_contents($filename); //Get the old file
$result = file_put_contents ( $filename, $thingToPush . $terminator . $oldStuff ); //add the new
stuff to the old and write it
return $result; //return whatever file_put_contents says
}
function FilePop($filename, $terminator="\n") {
$oldStuff = file_get_contents($filename); //get those file contents
$pos = strpos($oldStuff, $terminator); // find our first terminator
if ($pos == false) { //No terminator detected. Is there one item or no items?
if (strlen($oldStuff) < 1) { // There is nothing!
$result = false;
} else { //There is only one thing!
$result = $oldStuff; //store that thing
file_put_contents ( $filename, ''); //pop it out of file
}
} else { //There are many things, and we found the first one
$result = substr($oldStuff, 0, $pos); //get the first thing
file_put_contents ( $filename, substr($oldStuff, ($pos + strlen($terminator))) ); //re-put
everything but the popped item in the file.
}
return $result; //return whatever happened
}
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Manual Page -- http://www.php.net/manual/en/function.strlen.php
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