Dont install useless php extension

If you think it works slow, make sure it is compiled with any of these instructions

> pdlib
>
> PDlib support => enabled
> Pdlib Version => 1.0.2
> DLIB_USE_CUDA => false
> DLIB_USE_BLAS => true
> DLIB_USE_LAPACK => true
> USE_AVX_INSTRUCTIONS => false
> USE_AVX2_INSTRUCTIONS => false
> USE_NEON_INSTRUCTIONS => false
> USE_SSE2_INSTRUCTIONS => true
> USE_SSE4_INSTRUCTIONS => false

.travis.yml

@@ -0,0 +1,28 @@
+dist: bionic
+
+sudo: false
+
+language: php
+
+php:
+  - 7.1
+  - 7.2
+  - 7.3
+  - 7.4
+
+before_install:
+  - sudo sh -c 'echo "deb https://repo.delellis.com.ar bionic bionic" > /etc/apt/sources.list.d/20-pdlib.list'
+  - wget -qO - https://repo.delellis.com.ar/repo.gpg.key | sudo apt-key add -
+  - sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 762E3157
+  - sudo apt update
+  - sudo apt-get install libdlib-dev
+  - phpize
+  - ./configure --enable-debug
+  - make
+  - sudo make install
+  - echo "extension=pdlib.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`
+
+script:
+  - export TEST_PHP_EXECUTABLE=`which php`
+  - export NO_INTERACTION=1
+  - php run-tests.php -q --show-diff

README.md

@@ -1,69 +1,15 @@
-# PDlib - A PHP extension for Dlib
+# PDlib - A PHP extension for [Dlib](https://github.com/davisking/dlib)
 
-## Requirements
-- Dlib 19.13+
-- PHP 7.0+
-- C++11
-- libx11-dev (on Ubuntu: `sudo apt-get install libx11-dev`)
+Dlib is a modern C++ toolkit containing machine learning algorithms and tools for creating complex software in C++ to solve real world problems. See http://dlib.net for the main project documentation and API reference.
 
-## Recommended
-- BLAS library  
-If no BLAS library found - dlib's built in BLAS will be used.
-However, if you install an optimized BLAS such as OpenBLAS or the Intel MKL your code
-will run faster.  On Ubuntu you can install OpenBLAS by executing:
-`sudo apt-get install libopenblas-dev liblapack-dev`
+PDlib is a PHP extension that implements the PHP binging for the dlib library, that now is used in the Nextcloud [FaceRecognition](https://github.com/matiasdelellis/facerecognition) application.
 
-## Dependencies
-
-### Dlib
-
-Install Dlib as shared library
-
-```bash
-git clone https://github.com/davisking/dlib.git
-cd dlib/dlib
-mkdir build
-cd build
-cmake -DBUILD_SHARED_LIBS=ON ..
-make
-sudo make install
-```
+## Note
+This is a fork of the [original pdlib extension](https://github.com/goodspb/pdlib), which we will use temporarily for the Nextcloud [FaceRecognition](https://github.com/matiasdelellis/facerecognition) application while the original author is not responding.
 
 ## Installation
 
-```bash
-git clone https://github.com/goodspb/pdlib.git
-cd pdlib
-phpize
-./configure --enable-debug
-make
-sudo make install
-```
-
-### Configure PHP installation
-
-```bash
-vim youpath/php.ini
-```
-
-Append the content below into `php.ini`
-
-```
-[pdlib]
-extension="pdlib.so"
-```
-
-## Tests
-
-For tests, you will need to have bz2 extension installed. On Ubuntu, it boils to:
-```bash
-sudo apt-get install php-bz2
-```
-
-After you successfully compiled everything, just run:
-```bash
-make test
-```
+Read [Installation](https://github.com/matiasdelellis/pdlib/wiki/Installation) documentation on the wiki for details.
 
 ## Usage
 

config.m4

@@ -1,10 +1,3 @@
-dnl $Id$
-dnl config.m4 for extension pdlib
-
-dnl Comments in this file start with the string 'dnl'.
-dnl Remove where necessary. This file will not work
-dnl without editing.
-
 if test -z "$PHP_DEBUG"; then
     AC_ARG_ENABLE(debug,
     [   --enable-debug          compile with debugging symbols],[
@@ -14,42 +7,65 @@ if test -z "$PHP_DEBUG"; then
 fi
 
 PHP_ARG_WITH(pdlib, for pdlib support,
-dnl Make sure that the comment is aligned:
 [  --with-pdlib             Include pdlib support])
 
-if test "$PHP_PDLIB" != "no"; then
-  dnl using C++11
-  CXXFLAGS="-std=c++11"
-  PHP_REQUIRE_CXX()
-  PHP_ADD_LIBRARY(stdc++, 1, PDLIB_SHARED_LIBADD)
-  PHP_SUBST(PDLIB_SHARED_LIBADD)
+dnl using C++11
+CXXFLAGS="-std=c++11"
+PHP_REQUIRE_CXX()
+PHP_ADD_LIBRARY(stdc++, 1, PDLIB_SHARED_LIBADD)
+PHP_SUBST(PDLIB_SHARED_LIBADD)
 
-  pdlib_src_files="pdlib.cc \
-  src/chinese_whispers.cc \
-  src/face_detection.cc \
-  src/face_landmark_detection.cc \
-  src/face_recognition.cc \
-  src/cnn_face_detection.cc "
+PHP_PDLIB_SOURCES="\
+    pdlib.cc \
+    src/chinese_whispers.cc \
+    src/face_detection.cc \
+    src/face_landmark_detection.cc \
+    src/face_recognition.cc \
+    src/cnn_face_detection.cc \
+    src/vector.cc \
+"
 
-  AC_MSG_CHECKING(for pkg-config)
-  if test ! -f "$PKG_CONFIG"; then
-        PKG_CONFIG=`which pkg-config`
-  fi
-
-  if test -x "$PKG_CONFIG" && $PKG_CONFIG --exists dlib-1; then
-     if $PKG_CONFIG dlib-1 --atleast-version 19.00; then
-        LIBDLIB_CFLAGS=`$PKG_CONFIG dlib-1 --cflags`
-        LIBDLIB_LIBDIR=`$PKG_CONFIG dlib-1 --libs`
-        LIBDLIB_VERSON=`$PKG_CONFIG dlib-1 --modversion`
-        AC_MSG_RESULT(from pkgconfig: dlib version $LIBDLIB_VERSON)
-     else
-        AC_MSG_ERROR(system dlib is too old: version 19.00 required)
-     fi
-  else
-     AC_MSG_ERROR(pkg-config not found)
-  fi
-  PHP_EVAL_LIBLINE($LIBDLIB_LIBDIR, PDLIB_SHARED_LIBADD)
-  PHP_EVAL_INCLINE($LIBDLIB_CFLAGS)
-
-  PHP_NEW_EXTENSION(pdlib, $pdlib_src_files, $ext_shared,, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1)
+AC_MSG_CHECKING(for pkg-config)
+if test ! -f "$PKG_CONFIG"; then
+    PKG_CONFIG=`which pkg-config`
 fi
+
+if test -f "$PKG_CONFIG"; then
+    AC_MSG_RESULT(found)
+
+    AC_MSG_CHECKING(for dlib-1)
+    if $PKG_CONFIG --exists dlib-1; then
+        if $PKG_CONFIG dlib-1 --atleast-version 19.00; then
+            LIBDLIB_CFLAGS=`$PKG_CONFIG dlib-1 --cflags`
+            LIBDLIB_LIBDIR=`$PKG_CONFIG dlib-1 --libs`
+            LIBDLIB_VERSON=`$PKG_CONFIG dlib-1 --modversion`
+            AC_MSG_RESULT(from pkgconfig: dlib version $LIBDLIB_VERSON)
+        else
+            AC_MSG_ERROR(system dlib is too old: version 19.00 required)
+        fi
+    else
+        AC_MSG_ERROR(dlib-1 not found)
+    fi
+else
+    AC_MSG_ERROR(pkg-config not found)
+fi
+
+PHP_EVAL_LIBLINE($LIBDLIB_LIBDIR, PDLIB_SHARED_LIBADD)
+PHP_EVAL_INCLINE($LIBDLIB_CFLAGS)
+
+PHP_NEW_EXTENSION(pdlib, $PHP_PDLIB_SOURCES, $ext_shared, , -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1)
+
+AC_CONFIG_COMMANDS_POST([
+    echo ""
+    echo "Build configuration for PDlib v1.0.2 done correctly."
+    echo ""
+    echo "  CFLAGS       : $CFLAGS"
+    echo "  LDFLAGS      : $LDFLAGS"
+    echo "  LIBDIR:      : $LIBDLIB_LIBDIR"
+    echo "  LIBADD:      : $PDLIB_SHARED_LIBADD"
+    echo "  CFLAGS:      : $LIBDLIB_CFLAGS"
+    echo ""
+    echo "Please submit bug reports at:"
+    echo "  https://github.com/matiasdelellis/pdlib/issues"
+    echo ""
+])

pdlib.cc

@@ -22,17 +22,20 @@ extern "C" {
 	#ifdef HAVE_CONFIG_H
 	#include "config.h"
 	#endif
-
 	#include "php.h"
 	#include "php_ini.h"
 	#include "ext/standard/info.h"
 }
+
+	#include <dlib/simd/simd_check.h>
+
 #include "php_pdlib.h"
 #include "src/chinese_whispers.h"
 #include "src/face_detection.h"
 #include "src/face_recognition.h"
 #include "src/cnn_face_detection.h"
 #include "src/face_landmark_detection.h"
+#include "src/vector.h"
 
 /* If you declare any globals in php_pdlib.h uncomment this:
 ZEND_DECLARE_MODULE_GLOBALS(pdlib)
@@ -60,27 +63,6 @@ PHP_INI_END()
 */
 /* }}} */
 
-/* Remove the following function when you have successfully modified config.m4
-   so that your module can be compiled into PHP, it exists only for testing
-   purposes. */
-
-/* Every user-visible function in PHP should document itself in the source */
-/* {{{ proto string confirm_pdlib_compiled(string arg)
-   Return a string to confirm that the module is compiled in */
-PHP_FUNCTION(confirm_pdlib_compiled)
-{
-	char *arg = NULL;
-	size_t arg_len, len;
-	zend_string *strg;
-
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &arg, &arg_len) == FAILURE) {
-		return;
-	}
-
-	strg = strpprintf(0, "Congratulations! You have successfully modified ext/%.78s/config.m4. Module %.78s is now compiled into PHP.", "pdlib", arg);
-
-	RETURN_STR(strg);
-}
 /* }}} */
 /* The previous line is meant for vim and emacs, so it can correctly fold and
    unfold functions in source code. See the corresponding marks just before
@@ -246,7 +228,49 @@ PHP_RSHUTDOWN_FUNCTION(pdlib)
 PHP_MINFO_FUNCTION(pdlib)
 {
 	php_info_print_table_start();
-	php_info_print_table_header(2, "pdlib support", "enabled");
+	php_info_print_table_header(2, "PDlib support", "enabled");
+	php_info_print_table_header(2, "Pdlib Version", PHP_PDLIB_VERSION);
+//	php_info_print_table_header(2, "Dlib Version", DLIB_VERSION);
+#ifdef DLIB_USE_CUDA
+	php_info_print_table_header(2, "DLIB_USE_CUDA", "true");
+#else
+	php_info_print_table_header(2, "DLIB_USE_CUDA", "false");
+#endif
+#ifdef DLIB_USE_BLAS
+	php_info_print_table_header(2, "DLIB_USE_BLAS", "true");
+#else
+	php_info_print_table_header(2, "DLIB_USE_BLAS", "false");
+#endif
+#ifdef DLIB_USE_LAPACK
+	php_info_print_table_header(2, "DLIB_USE_LAPACK", "true");
+#else
+	php_info_print_table_header(2, "DLIB_USE_LAPACK", "false");
+#endif
+#ifdef DLIB_HAVE_AVX
+	php_info_print_table_header(2, "USE_AVX_INSTRUCTIONS", "true");
+#else
+	php_info_print_table_header(2, "USE_AVX_INSTRUCTIONS", "false");
+#endif
+#ifdef DLIB_HAVE_AVX2
+	php_info_print_table_header(2, "USE_AVX2_INSTRUCTIONS", "true");
+#else
+	php_info_print_table_header(2, "USE_AVX2_INSTRUCTIONS", "false");
+#endif
+#ifdef DLIB_HAVE_NEON
+	php_info_print_table_header(2, "USE_NEON_INSTRUCTIONS", "true");
+#else
+	php_info_print_table_header(2, "USE_NEON_INSTRUCTIONS", "false");
+#endif
+#ifdef DLIB_HAVE_SSE2
+	php_info_print_table_header(2, "USE_SSE2_INSTRUCTIONS", "true");
+#else
+	php_info_print_table_header(2, "USE_SSE2_INSTRUCTIONS", "false");
+#endif
+#ifdef DLIB_HAVE_SSE41
+	php_info_print_table_header(2, "USE_SSE4_INSTRUCTIONS", "true");
+#else
+	php_info_print_table_header(2, "USE_SSE4_INSTRUCTIONS", "false");
+#endif
 	php_info_print_table_end();
 
 	/* Remove comments if you have entries in php.ini
@@ -260,10 +284,10 @@ PHP_MINFO_FUNCTION(pdlib)
  * Every user visible function must have an entry in pdlib_functions[].
  */
 const zend_function_entry pdlib_functions[] = {
-	PHP_FE(confirm_pdlib_compiled,	NULL)
 	PHP_FE(dlib_chinese_whispers, dlib_chinese_whispers_arginfo)
 	PHP_FE(dlib_face_detection, dlib_face_detection_arginfo)
 	PHP_FE(dlib_face_landmark_detection, dlib_face_landmark_detection_arginfo)
+	PHP_FE(dlib_vector_length, dlib_vector_length_arginfo)
 	PHP_FE_END	/* Must be the last line in pdlib_functions[] */
 };
 /* }}} */
@@ -272,7 +296,7 @@ const zend_function_entry pdlib_functions[] = {
  */
 zend_module_entry pdlib_module_entry = {
 	STANDARD_MODULE_HEADER,
-	"pdlib",
+	PHP_PDLIB_NAME,
 	pdlib_functions,
 	PHP_MINIT(pdlib),
 	PHP_MSHUTDOWN(pdlib),

php_pdlib.h

@@ -31,7 +31,8 @@ extern "C" {
 extern zend_module_entry pdlib_module_entry;
 #define phpext_pdlib_ptr &pdlib_module_entry
 
-#define PHP_PDLIB_VERSION "1.0.1" /* Replace with version number for your extension */
+#define PHP_PDLIB_NAME "pdlib"
+#define PHP_PDLIB_VERSION "1.0.2"
 
 #ifdef PHP_WIN32
 #	define PHP_PDLIB_API __declspec(dllexport)

src/vector.cc

@@ -0,0 +1,47 @@
+
+#include "../php_pdlib.h"
+
+#include "vector.h"
+
+#include <cmath>
+#include <zend_exceptions.h>
+#include <iostream>
+
+using namespace std;
+
+PHP_FUNCTION(dlib_vector_length)
+{
+	zval *x_arg, *y_arg;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "aa", &x_arg, &y_arg) == FAILURE) {
+		zend_throw_exception_ex(
+			zend_ce_exception,
+			0 TSRMLS_CC,
+			"Unable to parse arrays in dlib_vector_length");
+		return;
+	}
+
+	zval *elem_x, *elem_y;
+	double sum = 0.0;
+	int i, len;
+
+	len = zend_hash_num_elements(Z_ARRVAL_P(x_arg));
+
+	if (len != zend_hash_num_elements(Z_ARRVAL_P(y_arg))) {
+		zend_throw_exception_ex(
+			zend_ce_exception,
+			0 TSRMLS_CC,
+			"The arrays have different sizes");
+		return;
+	}
+
+	for (i = 0 ; i < len ; i++) {
+		elem_x = zend_hash_index_find(Z_ARRVAL_P(x_arg), i);
+		elem_y = zend_hash_index_find(Z_ARRVAL_P(y_arg), i);
+
+		sum += (Z_DVAL_P(elem_x) - Z_DVAL_P(elem_y))*(Z_DVAL_P(elem_x) - Z_DVAL_P(elem_y));
+	}
+
+	RETURN_DOUBLE(sqrt(sum));
+}
+

src/vector.h

@@ -0,0 +1,10 @@
+#ifndef PHP_DLIB_VECTOR_H
+#define PHP_DLIB_VECTOR_H
+
+ZEND_BEGIN_ARG_INFO_EX(dlib_vector_length_arginfo, 0, 0, 2)
+    ZEND_ARG_INFO(1, x_arg)
+    ZEND_ARG_INFO(1, y_arg)
+ZEND_END_ARG_INFO()
+PHP_FUNCTION(dlib_vector_length);
+
+#endif //PHP_DLIB_VECTOR_H

tests/vector_length.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Basic tests for dlib_vector_length
+--SKIPIF--
+<?php if (!extension_loaded("pdlib")) print "skip"; ?>
+--FILE--
+<?php
+$vectorAL = [0.0, 0.0];
+$vectorAR = [0.0, 1.0];
+var_dump(dlib_vector_length($vectorAL, $vectorAR));
+$vectorBL = [0.0, 0.0, -1.0];
+$vectorBR = [0.0, 0.0, 1.0];
+var_dump(dlib_vector_length($vectorBL, $vectorBR));
+$vectorCL = [0.0, 2.5, 1.0];
+$vectorCR = [0.0, 1.0, 1.0];
+var_dump(dlib_vector_length($vectorCL, $vectorCR));
+?>
+--EXPECT--
+float(1)
+float(2)
+float(1.5)

tests/version.phpt

@@ -0,0 +1,10 @@
+--TEST--
+Just test php extension version
+--SKIPIF--
+<?php if (!extension_loaded("pdlib")) print "skip"; ?>
+--FILE--
+<?php
+var_dump(phpversion('pdlib'));
+?>
+--EXPECT--
+string(5) "1.0.2"