PHP Extension Writing
Marcus Börger
Johannes Schlüter
PHP Quebec 09: http://talks.somabo.de/200903b.pdf
| .pps
Pdf add signature field - C# PDF Field Edit Library: insert, delete, update pdf form field in C#.net, ASP.NET, MVC, Ajax, WPF
Online C# Tutorial to Insert, Delete and Update Fields in PDF Document
cannot edit pdf form; convert pdf to editable form
Pdf add signature field - VB.NET PDF Field Edit library: insert, delete, update pdf form field in vb.net, ASP.NET, MVC, Ajax, WPF
How to Insert, Delete and Update Fields in PDF Document with VB.NET Demo Code
pdf form creation; convert word doc to pdf with editable fields
PHP Extension Writing
2
Börger, Schlüter
þ
Creating PHP 5 Extension
þ
PHP Lifecycle
þ
Adding objects
þ
Adding iterators to objects
C# PDF Digital Signature Library: add, remove, update PDF digital
things. Add a signature or an empty signature field in any PDF file page. Search unsigned signature field in PDF document. Prepare
change font in pdf form; chrome pdf save form data
VB.NET PDF Digital Signature Library: add, remove, update PDF
things. Add a signature or an empty signature field in any PDF file page. Search unsigned signature field in PDF document. Prepare
convert word document to editable pdf form; pdf save form data
PHP Extension Writing
3
Börger, Schlüter
Text in yellow Text you should use as presented
Text in green
Text that you have to replace
yourext
Extension name in lowercase
YOUREXT
Extension name in uppercase
YourExt
Extension name in mixed case (camelCaps)
How the slides work
þ
Upper part contains some helpfulhints
þ
Lower part shows c code on blue background
Some special explanation 
use red text boxes
C# PDF insert image Library: insert images into PDF in C#.net, ASP
field. Access to freeware download and online C#.NET class source code. How to insert and add image, picture, digital photo, scanned signature or logo into PDF
add text field pdf; create a fillable pdf form in word
VB.NET PDF insert image library: insert images into PDF in vb.net
Import graphic picture, digital photo, signature and logo into PDF Add images to any selected PDF page in VB.NET. Insert images into PDF form field in VB.NET.
add fillable fields to pdf online; build pdf forms
PHP Extension Writing
4
Börger, Schlüter
Part I
Creating PHP 5 Extensions
þ
How PHP handles data
þ
How to create your own extension skeleton
þ
How to create your own functions
þ
How to work with arrays and hash tables
How to C#: Basic SDK Concept of XDoc.PDF for .NET
You may add PDF document protection functionality into your C# program. To be specific, you can edit PDF password and digital signature, and set PDF file
add editable fields to pdf; adding an image to a pdf form
VB.NET PDF: Basic SDK Concept of XDoc.PDF
You may add PDF document protection functionality into your VB.NET program. To be specific, you can edit PDF password and digital signature, and set PDF file
pdf form save in reader; can reader edit pdf forms
PHP Extension Writing
5
Börger, Schlüter
typedef struct _zval_struct {
zvalue_value value;
zend_uint refcount;
zend_uchar type;
zend_uchar is_ref;
} zval; 
In PHP all values are zval's
typedef union _zvalue_value {
long lval; 
double dval
struct {
char *val;
int len;
} str;
HashTable *ht;
zend_object_value obj; 
} zvalue_value; 
IS_NULL
IS_LONG
IS_DOUBLE
IS_BOOL
IS_ARRAY
IS_OBJECT
IS_STRING
IS_RESOURCE
VB.NET PDF Library SDK to view, edit, convert, process PDF file
NET program. Password, digital signature and PDF text, image and page redaction will be used and customized. PDF Annotation Edit.
add text fields to pdf; change font pdf fillable form
C# Create PDF Library SDK to convert PDF from other file formats
you can add some additional information to generated PDF file. What's more, you can also protect created PDF file by adding digital signature (watermark) on
adding text fields to a pdf; adding images to pdf forms
PHP Extension Writing
6
Börger, Schlüter
typedef struct _zval_struct {
zvalue_value value;
zend_uint refcount;
zend_uchar type;
zend_uchar is_ref;
} zval; 
In PHP all values are zval's
Userspace notion of "Reference"
0 == Not a reference
1 == Is a reference
How many "labels" are 
associated with this zval?
C# PDF Convert to Images SDK: Convert PDF to png, gif images in C#
image files including all PDF contents, like watermark and signature in .NET. C#.NET DLLs Solution for Converting Images to PDF in C# Add necessary references:
changing font size in a pdf form; changing font size in pdf form field
C# PDF remove image library: remove, delete images from PDF in C#.
Support removing vector image, graphic picture, digital photo, scanned signature, logo, etc. Remove Image from PDF Page Using C#. Add necessary references:
pdf form maker; adding a text field to a pdf
PHP Extension Writing
7
Börger, Schlüter
typedef struct _zval_struct {
zvalue_value value;
zend_uint refcount;
zend_uchar type;
zend_uchar is_ref;
} zval; 
Copy On Write
•Has a value of 0 (zero)
•zval shared by 1 or more labels
•If one label wants to make a 
change, it must leave other 
labels with the original value.
$a = 123;
value.lval = 123
refcount = 1
type = IS_LONG
is_ref = 0
$a
PHP Extension Writing
8
Börger, Schlüter
typedef struct _zval_struct {
zvalue_value value;
zend_uint refcount;
zend_uchar type;
zend_uchar is_ref;
} zval; 
Copy On Write
•Has a value of 0 (zero)
•zval shared by 1 or more labels
•If one label wants to make a 
change, it must leave other 
labels with the original value.
$a = 123;
$b = $a;
value.lval = 123
refcount = 2
type = IS_LONG
is_ref = 0
$a
$b
PHP Extension Writing
9
Börger, Schlüter
typedef struct _zval_struct {
zvalue_value value;
zend_uint refcount;
zend_uchar type;
zend_uchar is_ref;
} zval; 
Copy On Write
•Has a value of 0 (zero)
•zval shared by 1 or more labels
•If one label wants to make a 
change, it must leave other 
labels with the original value.
$a = 123;
$b = $a;
$b = 456;
value.lval = 123
refcount = 1
type = IS_LONG
is_ref = 0
$a
value.lval = 456
refcount = 1
type = IS_LONG
is_ref = 0
$b
PHP Extension Writing
10
Börger, Schlüter
typedef struct _zval_struct {
zvalue_value value;
zend_uint refcount;
zend_uchar type;
zend_uchar is_ref;
} zval; 
Full Reference
•Has a value of 1 (one)
•zval shared by 1 or more labels
•If one label wants to make a 
change, it does so, causing other 
labels to see the new value.
$a = 123;
value.lval = 123
refcount = 1
type = IS_LONG
is_ref = 0
$a
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