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Top Forums Web Development Problem in printing binary tree using php and mysql Post 303001005 by Deepak Tiwari on Tuesday 25th of July 2017 05:24:06 AM
Old 07-25-2017
Problem in printing binary tree using php and mysql

Database Structure

Root Table

ID Root_ Node Level
1 A 0
2 B 1
3 C 1


Child Table

ID Left_Node Right_Node Root_Node Root_ID
1 B C A 1



I need to print up to 20 level.
 

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MARC::Charset::Table(3pm)				User Contributed Perl Documentation				 MARC::Charset::Table(3pm)

NAME
MARC::Charset::Table - character mapping db SYNOPSIS
use MARC::Charset::Table; use MARC::Charset::Constants qw(:all); # create the table object my $table = MARC::Charset::Table->new(); # get a code using the marc8 character set code and the character my $code = $table->lookup_by_marc8(CYRILLIC_BASIC, 'K'); # get a code using the utf8 value $code = $table->lookup_by_utf8(chr(0x043A)); DESCRIPTION
MARC::Charset::Table is a wrapper around the character mapping database, which is implemented as a tied hash on disk. This database gets generated by Makefile.PL on installation of MARC::Charset using MARC::Charset::Compiler. The database is essentially a key/value mapping where a key is a MARC-8 character set code + a MARC-8 character, or an integer representing the UCS code point. These keys map to a serialized MARC::Charset::Code object. new() The consturctor. add_code() Add a MARC::Charset::Code to the table. get_code() Retrieve a code using a hash key. lookup_by_marc8() Looks up MARC::Charset::Code entry using a character set code and a MARC-8 value. use MARC::Charset::Constants qw(HEBREW); $code = $table->lookup_by_marc8(HEBREW, chr(0x60)); lookup_by_utf8() Looks up a MARC::Charset::Code object using a utf8 value. db() Returns a reference to a tied character database. MARC::Charset::Table wraps access to the db, but you can get at it if you want. db_path() Returns the path to the character encoding database. Can be called statically too: print MARC::Charset::Table->db_path(); brand_new() An alternate constructor which removes the existing database and starts afresh. Be careful with this one, it's really only used on MARC::Charset installation. perl v5.12.4 2010-09-09 MARC::Charset::Table(3pm)
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