note 53821 added to function.serialize

From: Date: Tue, 14 Jun 2005 11:44:15 +0000
Subject: note 53821 added to function.serialize
Groups: php.notes 
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wiart at yahoo dot com wrote: >As you can see, the original array : >$arr["20041001103319"] = "test" > >after serialize/unserialize is: >$arr[683700183] = "test" yepp, and i can explain it. the internal compiler of php does not hit anys rule wich foces him to make that number a string during serialisation. since it becomes an integer and php supports 32bit interger not arbitary bitwidth this is what happens: "20041001103319" equals hexadecimal: 0x123A28C06FD7h if you cut away the frontpart cutting down to 32bis, you get: 0x28C06FD7h wich equals 683700183. of, for those of you who speak binary: 20041001103319 = 100100011101000101000110000000110111111010111bin ----cut-away----00101000110000000110111111010111bin =683700183 so, what can you do to prevent stuff like this? eihter use only numbers between 0..9999999999 or force strings, best way ist to add a character like foo["c2342303"] cheers, abductee ---- Manual Page -- http://www.php.net/manual/en/function.serialize.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+53821 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+53821&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+53821&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+53821&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+53821&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+53821&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+53821&report=yes Search -- http://master.php.net/manage/user-notes.php

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