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The ''PHP License'' is the software license under which the PHP scripting language is released. The PHP License is a non-copyleft free software license according to the Free Software Foundation〔(【引用サイトリンク】 url = http://www.gnu.org/licenses/license-list.html#GPLIncompatibleLicenses )〕 and an open source license according to the Open Source Initiative.〔(【引用サイトリンク】 url = http://www.opensource.org/licenses/alphabetical )〕 The license is GPL-incompatible due to restrictions on the usage of the term ''PHP''.〔 == Terms == The PHP License is designed to encourage widespread adoption of the source code. Redistribution is permitted in source or binary form with or without modifications provided that: # The PHP License copyright statement is included; # The word "PHP" is not included in the title of any derivative works; # The following acknowledgment is included in whatever form the code is redistributed under: This product includes PHP software, freely available from <http://www.php.net/software/> Version 3 of PHP used a dual license—PHP 3's source is available under either the PHP License or the GNU General Public License (GPL). This practice was discontinued as of PHP 4, with PHP's developers citing the restrictions on reuse associated with the GPL's copyleft enforcement as being the reason for dropping it.〔(【引用サイトリンク】 Why is PHP 4 not dual-licensed under the GNU General Public License (GPL) like PHP 3 was? )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PHP License」の詳細全文を読む スポンサード リンク
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