Programming PHP

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should give you a good foundation for how to use PHP’s XSLTfunctions, even if the implementation changes in the future. Three documents are involved in an XSLT transformation: the original XML document, the XSLTdocument containing transformation rules, and the resulting document. The final document doesn’t have to be in XML—a common use of XSLT is to generate HTML from XML. To do an XSLT transformation in PHP, you create an XSLT processor, give it some input to transform, then destroy the processor. Create a processor with xslt_create( ): $xslt = xslt_create( ); Process a file with xslt_process( ): $result = xslt_process(xslt, xml, xsl [, result [, arguments [, parameters ]]]); The xml and xsl parameters are filenames for the input XML and transformation XSL, respectively. Specify a result filename to store the new document in a file, or omit it to have xslt_process( ) return the new document. The parameters option is an associative array of parameters to your XSL, accessible through xsl:param name="parameter_name". The arguments option is a roundabout way of working with XML or XSL stored in variables rather than in files. Set xml or xsl to 'arg:/foo', and the value for /foo in the arguments associative array will be used as the text for the XML or XSL document. Example 11-11 is the XML document we’re going to transform. It is in a similar format to many of the news documents you find on the Web. Example 11-11. XML document O'Reilly Publishes Programming PHP http://example.org/article.php?id=20020430/458566 2002-04-30 09:04:23 Rasmus and some others Transforming XML with PHP Simplified http://example.org/article.php?id=20020430/458566 2002-04-30 09:04:23 k.tatroe Example 11-12 is the XSL document we’ll use to transform the XML document into HTML. Each xsl:template element contains a rule for dealing with part of the input document. 278 | Chapter 11: XML This is the Title of the Book, eMatter Edition Copyright © 2002 O’Reilly & Associates, Inc. All rights reserved.
Example 11-12. News XSL transform Current Stories () [ More ] Example 11-13 is the very small amount of code necessary to transform the XML document into an HTML document using the XSL style sheet. We create a processor, run the files through it, and print the result. Example 11-13. XSL transformation from files Example 11-14 contains the same transformation as Example 10-13 but uses XML and XSL values from an array instead of going directly to files. In this example there’s This is the Title of the Book, eMatter Edition Copyright © 2002 O’Reilly & Associates, Inc. All rights reserved. Transforming XML with XSLT | 279
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Programming PHP
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Programming PHP by Rasmus Lerdorf a
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Colophon Our look is the result of
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Accessing Individual Characters 79
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Concealing PHP Libraries 293 PHP Co
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clarify the explanations, and the p
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There is a web page for this book,
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Chapter 2 CHAPTER 2 Language Basics
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Comments Comments give information
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*/ echo("l=$l m=$m n=$n\n"); ?> Now
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change. Constants are referred to b
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PHP recognizes floating-point numbe
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• The empty string ("") and the s
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Chapter 6 describes classes and obj
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The old value of $black is lost. In
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update_counter( ); update_counter(
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Table 2-3. PHP operators P A Operat
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The division and multiplication ope
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Autoincrement and Autodecrement Ope
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Bitwise Operators The bitwise opera
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something is true. For example, you
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Because all operators are required
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if The if statement checks the trut
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A switch statement is given an expr
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if ($i == 5) break; // breaks out o
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This program adds the numbers from
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loops, and complain if the file bei
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XML Style Because of the advent of
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and other such niceties. Some will
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Chapter 3 CHAPTER 3 Functions A fun
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Typically, functions return some va
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As we discussed in Chapter 2, the e
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Example 3-5. Doubler redux function
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Missing Parameters PHP lets you be
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Anonymous Functions Some PHP functi
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echo "$who was $where"; Kilroy was
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As a special case, you can put a se
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• A padding specifier denoting th
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Boolean values and NULL are not mea
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Changing Case PHP has several funct
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The quote_style and charset argumen
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Query-string encoding The urlencode
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The comparison operators (=) also w
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The Levenshtein algorithm calculate
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The str_repeat( ) function takes a
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print_r($a);Array ( [0] => Fred [1]
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The c in strcspn( ) stands for comp
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These three kinds of patterns can b
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Subpatterns You can use parentheses
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Table 4-8. POSIX anchors Anchor Mat
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Example 4-1. Credit-card validator
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Character Classes Perl-style regula
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Trailing Options Perl-style regular
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A simple use of positive lookahead
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For example: preg_match('/y.*e$/',
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Pass an array of strings as subject
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Quoting for regular expressions The
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Identifying Elements of an Array Yo
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array is almost always a programmer
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Two or more consecutive commas in t
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echo "true!\n"; } if (array_key_exi
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EXTR_PREFIX_SAME, which says that t
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echo "$key is $value\n"; } 0 is spa
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The default argument, if provided,
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you need to answer questions like
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Example 5-3. Sorting arrays (contin
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Here’s how to randomize the order
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Sets Arrays let you implement the b
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Here’s the output from Example 5-
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Terminology Everyobject-oriented la
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You can use variable variables with
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} function set_name ($new_name) { $
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The object created bythe Person con
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Example 6-1. Displaying all declare
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Example 6-2. Object introspection f
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Here are some sample classes and ob
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PHP has two hooks for objects durin
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Example 6-5 shows the file next.php
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the request contains a blank line,
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SERVER_NAME The hostname, DNS alias
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The biggest difference between GET
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Figure 7-1. The chunkify form and i
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Example 7-4. Temperature conversion
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Example 7-6. Multiple selection val
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Example 7-8. Sticky multivalued che
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Files are stored in the server’s
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“me@aol” by requiring an at sig
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To mark a document as already expir
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A third technique for maintaining s
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Example 7-10. Preference selection
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Session basics To enable sessions f
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Custom storage By default, PHP stor
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When a session is completed, the de
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Chapter 8 CHAPTER 8 Databases PHP h
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columns, each of which has a name a
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Figure 8-1. The movie page the data
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$db = DB::connect($datasource); if
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string(4) "1962" ["name"]=> string(
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The executeMultiple( ) method takes
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echo "$k"; if (is_array($v)) { a_to
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Two HTML forms are needed to popula
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Example 8-3. Database connection ab
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Example 8-4. Backend administration
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Example 8-5. Adding a business (con
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Example 8-5. Adding a business (con
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The business listings page is illus
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The series of requests sent by the
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many colors as you need. The latter
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image-generating function. Example
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Example 9-4. Adding text to an imag
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Example 9-6. Displaying vertical Tr
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Example 9-8. Caching dynamic button
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Page 231 and 232: True Color Color Indexes The color
Page 233 and 234: Chapter 10 CHAPTER 10 PDF Adobe’s
Page 235 and 236: Figure 10-1. Hello world in a PDF d
Page 237 and 238: Type, Content-Disposition, and Cont
Page 239 and 240: Example 10-3. Changing the origin (
Page 241 and 242: Example 10-4. Text alignment within
Page 243 and 244: Example 10-5. Changing text attribu
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Page 247 and 248: Adding an image to a PDF document i
Page 249 and 250: Example 10-8. Nonproportional scali
Page 251 and 252: Figure 10-9. A sample path The pdf_
Page 253 and 254: The width and height parameters spe
Page 255 and 256: Example 10-11. Using a template Th
Page 257 and 258: Example 10-12. Using bookmarks and
Page 259 and 260: Example 10-13. Specifying a link (c
Page 261 and 262: Figure 10-16. Closed note The conte
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Page 265 and 266: Example 11-1. Generating an XML doc
Page 267 and 268: The end element handler is called w
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Page 275 and 276: Figure 11-2. Book details comment).
Page 277: Example 11-10. bookparse.xml (conti
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Page 285 and 286: Chapter 12 CHAPTER 12 Security PHP
Page 287 and 288: These directives ensure that PHP er
Page 289 and 290: Restrict Filesystem Access to a Spe
Page 291 and 292: function or PHP’s copy( ) functio
Page 293 and 294: • Any system call (through functi
Page 295 and 296: You can globally disable particular
Page 297 and 298: Chapter 13 CHAPTER 13 Application T
Page 299 and 300: user.template. It uses the {DESTINA
Page 301 and 302: {ARTICLE} might be useful, as it wo
Page 303 and 304: } ob_start('rewrite'); ?> Visit our
Page 305 and 306: To turn off error reporting entirel
Page 307 and 308: Example 13-5. Log-rolling error han
Page 309 and 310: Before you begin optimization, ask
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Page 317 and 318: Chapter 14 CHAPTER 14 Extending PHP
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SWF_DIR=$i AC_MSG_RESULT(found in $
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If you compile the Apache module ve
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For example: zval **old, *new; *new
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The value returned from a PHP funct
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A More Complex Example Here’s an
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Table 14-4. RETURN-related convenie
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* ... */ }; PHP_MINIT_FUNCTION(foo)
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using SEPARATE_ZVAL( ), initializes
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The struct looks like this in the p
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zend_hash_update(&EG(symbol_table),
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Resources A resource is a generic d
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Chapter 15 CHAPTER 15 PHP on Window
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3. Windows 95/98/Me: the Windows sy
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Then explicitly load the module wit
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un under IIS, you will need to reim
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External Commands PHP uses the defa
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This creates a reference (VT_BYREF)
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Figure 15-3. Gleaning syntax from W
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Now we can complete the invoice wit
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multiple Workbooks, each of which c
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Example 15-4. Querying Excel via OD
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• Applications that want to use t
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Example 15-5. Add new phone number,
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Files, directories, and filesystem
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addcslashes string addcslashes(stri
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array_merge array array_merge(array
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array_search mixed array_search(mix
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asort void asort(array array[, int
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call_user_func mixed call_user_func
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chown bool chown(string path, mixed
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cos double cos(double value) Return
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Any characters in the format string
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each array each(array array) Create
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Any number of these options can be
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fflush int fflush(int handle) Commi
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filemtime int filemtime(string path
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If include is specified and is true
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ftell int ftell(int handle) Returns
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get_current_user string get_current
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get_parent_class string get_parent_
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getmypid int getmypid( ) Returns th
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header void header(string header[,
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implode string implode(array string
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is_double bool is_double(mixed valu
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is_scalar bool is_scalar(mixed valu
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Calculates the Levenshtein distance
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log double log(double number) Retur
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mkdir int mkdir(string path, int mo
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number_format string number_format(
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openlog int openlog(string identity
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parse_url array parse_url(string ur
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phpinfo void phpinfo([int what]) Ou
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printf int printf(string format[, m
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eaddir string readdir(int handle) R
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ound double round(double number[, i
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setlocale string setlocale(mixed ca
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sort void sort(array array[, int fl
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str_pad string str_pad(string strin
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%H Hour in 24-hour format, includin
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strncmp int strncmp(string one, str
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strtr string strtr(string string, s
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tmpfile int tmpfile( ) Creates a te
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unregister_tick_function void unreg
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wordwrap string wordwrap(string str
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old versions of aspell, you should
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DBM For very simple database instal
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Hyperwave Hyperwave is a database f
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mcrypt This extension provides an i
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pdflib pdflib provides support for
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Sybase This extension provides supp
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Symbols & (ampersand) &= (bitwise A
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| (vertical bar) |= (bitwise OR ass
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aspell PHP library, 457 assert() fu
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checksums mhash library, 464 valida
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cryptography mcrypt extension, 464
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DTD (Document Type Definition), 263
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System V Semaphores and Shared memo
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calling, 61 for each array element,
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H hash mark (#) in comments, 19 hea
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interlacing GIF images, 246 interna
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masks, using in string searches, 94
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serialization of, 153-157, 438 _ _s
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pdf_open_file() function, 234 pdf_p
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with echo, 76 with print() function
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S Sablotron C library (XSLT support
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sql_regcase() function, 443 sqrt()
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tan() function, 451 target encoding
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function parameters, 33 functions f
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xml_set_unparsed_entity_decl_handle
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