PHP（外文名:PHP: Hypertext
Preprocessor，中文名：“超文本预处理器”）是一种通用开源脚本语言。语法吸收了C语言、Java和Perl的特点，利于学习，使用广泛，主要适用于Web开发领域。PHP
独特的语法混合了C、Java、Perl以及PHP自创的语法。它可以比CGI或者Perl更快速地执行动态网页。用PHP做出的动态页面与其他的编程语言相比，PHP是将程序嵌入到HTML（标准通用标记语言下的一个应用）文档中去执行，执行效率比完全生成HTML标记的CGI要高许多；PHP还可以执行编译后代码，编译可以达到加密和优化代码运行，使代码运行更快。 PHP 7.2.9 - Calendar:
. Fixed bug #52974 (jewish.c: compile error under Windows with GBK charset).
(cmb) - Filter:
. Fixed bug #76366 (References in sub-array for filtering breaks the filter).
(ZiHang Gao) - PDO_Firebird:
. Fixed bug #76488 (Memory leak when fetching a BLOB field). (Simonov Denis) - PDO_PgSQL:
. Fixed bug #75402 (Possible Memory Leak using PDO::CURSOR_SCROLL option).
(Anatol) - SQLite3:
. Fixed #76665 (SQLite3Stmt::bindValue() with SQLITE3_FLOAT doesn't juggle).
(cmb) - Standard:
. Fixed bug #73817 (Incorrect entries in get_html_translation_table). (cmb)
. Fixed bug #68553 (array_column: null values in $index_key become incrementing
keys in result). (Laruence)
. Fixed bug #76643 (Segmentation fault when using `output_add_rewrite_var`).
(cmb) - Zip:
. Fixed bug #76524 (ZipArchive memory leak (OVERWRITE flag and empty archive)).
(Timur Ibragimov)
PHP 7.1.21
- Calendar:
. Fixed bug #52974 (jewish.c: compile error under Windows with GBK charset).
(cmb) - Filter:
. Fixed bug #76366 (References in sub-array for filtering breaks the filter).
(ZiHang Gao) - PDO_Firebird:
. Fixed bug #76488 (Memory leak when fetching a BLOB field). (Simonov Denis) - PDO_PgSQL:
. Fixed bug #75402 (Possible Memory Leak using PDO::CURSOR_SCROLL option).
(Anatol) - SQLite3:
. Fixed #76665 (SQLite3Stmt::bindValue() with SQLITE3_FLOAT doesn't juggle).
(cmb) - Standard:
. Fixed bug #68553 (array_column: null values in $index_key become incrementing
keys in result). (Laruence)
. Fixed bug #73817 (Incorrect entries in get_html_translation_table). (cmb)
. Fixed bug #76643 (Segmentation fault when using `output_add_rewrite_var`).
(cmb) - Zip:
. Fixed bug #76524 (ZipArchive memory leak (OVERWRITE flag and empty archive)).
(Timur Ibragimov) | 
