Programming Forums > Web Development and Design > PHP

Ooble · Oct 14th, 2004, 1:14 PM

Is there an easy-to-use, understandable way to parse XML in PHP? I have tried writing my own parser, but I cannot find a file-reading function that leaves tags intact.

Pizentios · Oct 14th, 2004, 2:30 PM

Hey,

Have you taken a look at this->www.php.net/xml

It's all the parser functions for xml.

if this isn't what you are looking for, post here again and i will keep looking.

Ooble · Oct 14th, 2004, 2:48 PM

I've seen it before. It's great, if you know what any of it means - I'm still a PHP newbie.

Pizentios · Oct 14th, 2004, 3:15 PM

Ahh, ok. Well, study up a little, once you get the base stuff for php in your mind the rest falls like a house of cards.

Ooble · Oct 14th, 2004, 3:20 PM

Well, I figured out the bits I need to fiddle with - all I need to know now is how to access the attributes in the startElement function. $attrs[x] doesn't work.

Ooble · Oct 14th, 2004, 5:05 PM

I figured it out. I was trying to create a navigation treeview. The code is below, in case anybody's interested.

Here's the PHP parser:

(Toggle Plain Text)

<?php
$file = "nav.xml";
$link = false;

function startElement($parser, $name, $attrs) {
	global $link;
	
	switch ($name) {
 case "MENU":
 	echo '<div id="'.$attrs["ID"].'" class="menu">';
 	echo '<img src="images/expand.gif" id="'.$attrs["ID"].'button" width="12" height="12" onclick="toggleMenu(\''.$attrs["ID"].'\');" alt="" class="showhide" /> ';
 	
 	if ($attrs["LINK"])
  echo '<a href="'.$attrs["LINK"].'">'.$attrs["CAPTION"].'</a>';
 	else
  echo $attrs["CAPTION"];
 	
 	echo '<div id="'.$attrs["ID"].'items" class="menuitems">';
 	break;
 case "ITEM":
 	if ($attrs["LINK"]) {
  echo '<a href="'.$attrs["LINK"].'">';
  $link = true;
 	}
 	else
  $link = false;
 	break;
	}
}

function endElement($parser, $name) {
	global $link;
	
	switch ($name) {
 case "MENU":
 	echo '</div>';
 	echo '</div>';
 	break;
 case "ITEM":
 	if ($link)
  echo '</a>';
 	echo '<br />';
 	break;
	}
}

function characterData($parser, $data) {
	echo $data;
}

$xml_parser = xml_parser_create();
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true);
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
@ $fp = fopen($file, "r");
if (!($fp))
	echo '<p class="naverror">We are unable to load the navigation bar. We apologise for the inconvenience.</p>';
else {
	while ($data = fread($fp, 4096)) {
 if (!xml_parse($xml_parser, $data, feof($fp))) {
 	sprintf("XML error: %s at line %d",
  	xml_error_string(xml_get_error_code($xml_parser)),
  	xml_get_current_line_number($xml_parser));
  	break;
 }
	}
	xml_parser_free($xml_parser);
}
?>

And here's the XML file:

(Toggle Plain Text)

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE nav SYSTEM "nav.dtd">

<navigation>

<menu id="menu1" caption="Menu 1">
	<menu id="menu1sub1" caption="Submenu 1">
 <item link="#">Submenu Item 1</item>
 <item>Submenu Item 2</item>
 <item>Submenu Item 3</item>
	</menu>
	<item>Menu Item 1</item>
	<item>Menu Item 2</item>
	<item>Menu Item 3</item>
</menu>

<menu id="menu2" caption="Menu 2" link="#">
	<item link="#">Menu Item 1</item>
	<item link="#">Menu Item 2</item>
	<item link="#">Menu Item 3</item>
</menu>

<menu id="menu3" caption="Menu 3">
	<item>Menu Item 1</item>
	<item>Menu Item 2</item>
	<item>Menu Item 3</item>
</menu>

</navigation>

dnathe4th · Oct 14th, 2004, 9:20 PM

very neat, i never thought of that application,
where are you using that?

Ooble · Oct 15th, 2004, 5:27 PM

For my school website. It's currently hosted at http://olaves.thefryhole.co.uk/index.php - the original is at http://www.saintolaves.net/.

BlazingWolf · Oct 16th, 2004, 3:21 PM

I must say that is very cool, and innovative.

kurifu · Oct 20th, 2004, 2:46 AM

PHP has EXTENSIVE support for XML (though not as much as Perl). It would be sensless to write your own XML parser.... dare I say re-inventing the wheel?

Oct 14th, 2004, 1:14 PM	#1
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	Is there an easy-to-use, understandable way to parse XML in PHP? I have tried writing my own parser, but I cannot find a file-reading function that leaves tags intact. __________________ Me :: You :: Them

Oct 14th, 2004, 2:30 PM	#2
Pizentios Programming Guru Join Date: May 2004 Location: Brandon, Manitoba, Canada Posts: 2,023 Rep Power: 7	Hey, Have you taken a look at this->www.php.net/xml It's all the parser functions for xml. if this isn't what you are looking for, post here again and i will keep looking. __________________ Profanity is the one language that all programmers understand. Check out my Blog <---updated Nov 30 2007!

Oct 14th, 2004, 2:48 PM	#3
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	I've seen it before. It's great, if you know what any of it means - I'm still a PHP newbie. __________________ Me :: You :: Them

Oct 14th, 2004, 3:15 PM	#4
Pizentios Programming Guru Join Date: May 2004 Location: Brandon, Manitoba, Canada Posts: 2,023 Rep Power: 7	Ahh, ok. Well, study up a little, once you get the base stuff for php in your mind the rest falls like a house of cards. __________________ Profanity is the one language that all programmers understand. Check out my Blog <---updated Nov 30 2007!

Oct 14th, 2004, 3:20 PM	#5
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	Well, I figured out the bits I need to fiddle with - all I need to know now is how to access the attributes in the startElement function. $attrs[x] doesn't work. __________________ Me :: You :: Them

Oct 14th, 2004, 5:05 PM	#6
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	I figured it out. I was trying to create a navigation treeview. The code is below, in case anybody's interested. Here's the PHP parser: (Toggle Plain Text) <?php $file = "nav.xml"; $link = false; function startElement($parser, $name, $attrs) { global $link; switch ($name) { case "MENU": echo '<div id="'.$attrs["ID"].'" class="menu">'; echo '<img src="images/expand.gif" id="'.$attrs["ID"].'button" width="12" height="12" onclick="toggleMenu(\''.$attrs["ID"].'\');" alt="" class="showhide" /> '; if ($attrs["LINK"]) echo '<a href="'.$attrs["LINK"].'">'.$attrs["CAPTION"].'</a>'; else echo $attrs["CAPTION"]; echo '<div id="'.$attrs["ID"].'items" class="menuitems">'; break; case "ITEM": if ($attrs["LINK"]) { echo '<a href="'.$attrs["LINK"].'">'; $link = true; } else $link = false; break; } } function endElement($parser, $name) { global $link; switch ($name) { case "MENU": echo '</div>'; echo '</div>'; break; case "ITEM": if ($link) echo '</a>'; echo '<br />'; break; } } function characterData($parser, $data) { echo $data; } $xml_parser = xml_parser_create(); xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true); xml_set_element_handler($xml_parser, "startElement", "endElement"); xml_set_character_data_handler($xml_parser, "characterData"); @ $fp = fopen($file, "r"); if (!($fp)) echo '<p class="naverror">We are unable to load the navigation bar. We apologise for the inconvenience.</p>'; else { while ($data = fread($fp, 4096)) { if (!xml_parse($xml_parser, $data, feof($fp))) { sprintf("XML error: %s at line %d", xml_error_string(xml_get_error_code($xml_parser)), xml_get_current_line_number($xml_parser)); break; } } xml_parser_free($xml_parser); } ?> <?php $file = "nav.xml"; $link = false; function startElement($parser, $name, $attrs) { global $link; switch ($name) { case "MENU": echo '<div id="'.$attrs["ID"].'" class="menu">'; echo '<img src="images/expand.gif" id="'.$attrs["ID"].'button" width="12" height="12" onclick="toggleMenu(\''.$attrs["ID"].'\');" alt="" class="showhide" /> '; if ($attrs["LINK"]) echo '<a href="'.$attrs["LINK"].'">'.$attrs["CAPTION"].'</a>'; else echo $attrs["CAPTION"]; echo '<div id="'.$attrs["ID"].'items" class="menuitems">'; break; case "ITEM": if ($attrs["LINK"]) { echo '<a href="'.$attrs["LINK"].'">'; $link = true; } else $link = false; break; } } function endElement($parser, $name) { global $link; switch ($name) { case "MENU": echo '</div>'; echo '</div>'; break; case "ITEM": if ($link) echo '</a>'; echo '<br />'; break; } } function characterData($parser, $data) { echo $data; } $xml_parser = xml_parser_create(); xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true); xml_set_element_handler($xml_parser, "startElement", "endElement"); xml_set_character_data_handler($xml_parser, "characterData"); @ $fp = fopen($file, "r"); if (!($fp)) echo '<p class="naverror">We are unable to load the navigation bar. We apologise for the inconvenience.</p>'; else { while ($data = fread($fp, 4096)) { if (!xml_parse($xml_parser, $data, feof($fp))) { sprintf("XML error: %s at line %d", xml_error_string(xml_get_error_code($xml_parser)), xml_get_current_line_number($xml_parser)); break; } } xml_parser_free($xml_parser); } ?> And here's the XML file: (Toggle Plain Text) <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE nav SYSTEM "nav.dtd"> <navigation> <menu id="menu1" caption="Menu 1"> <menu id="menu1sub1" caption="Submenu 1"> <item link="#">Submenu Item 1</item> <item>Submenu Item 2</item> <item>Submenu Item 3</item> </menu> <item>Menu Item 1</item> <item>Menu Item 2</item> <item>Menu Item 3</item> </menu> <menu id="menu2" caption="Menu 2" link="#"> <item link="#">Menu Item 1</item> <item link="#">Menu Item 2</item> <item link="#">Menu Item 3</item> </menu> <menu id="menu3" caption="Menu 3"> <item>Menu Item 1</item> <item>Menu Item 2</item> <item>Menu Item 3</item> </menu> </navigation> <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE nav SYSTEM "nav.dtd"> <navigation> <menu id="menu1" caption="Menu 1"> <menu id="menu1sub1" caption="Submenu 1"> <item link="#">Submenu Item 1</item> <item>Submenu Item 2</item> <item>Submenu Item 3</item> </menu> <item>Menu Item 1</item> <item>Menu Item 2</item> <item>Menu Item 3</item> </menu> <menu id="menu2" caption="Menu 2" link="#"> <item link="#">Menu Item 1</item> <item link="#">Menu Item 2</item> <item link="#">Menu Item 3</item> </menu> <menu id="menu3" caption="Menu 3"> <item>Menu Item 1</item> <item>Menu Item 2</item> <item>Menu Item 3</item> </menu> </navigation> __________________ Me :: You :: Them

Oct 14th, 2004, 9:20 PM	#7
dnathe4th Programmer Join Date: Oct 2004 Posts: 32 Rep Power: 0	very neat, i never thought of that application, where are you using that? __________________ <CENTER><span style='font-size:17pt;line-height:100%'>My Homepage</span></CENTER>

Oct 15th, 2004, 5:27 PM	#8
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	For my school website. It's currently hosted at http://olaves.thefryhole.co.uk/index.php - the original is at http://www.saintolaves.net/. __________________ Me :: You :: Them

Oct 16th, 2004, 3:21 PM	#9
BlazingWolf Hobbyist Programmer Join Date: Sep 2004 Posts: 207 Rep Power: 5	I must say that is very cool, and innovative. __________________ _______________________________ BlazingWolf

Oct 20th, 2004, 2:46 AM	#10
kurifu Expert Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia (Canada) Posts: 784 Rep Power: 5	PHP has EXTENSIVE support for XML (though not as much as Perl). It would be sensless to write your own XML parser.... dare I say re-inventing the wheel? __________________ Clifford Matthew Roche <geek@cliffordroche.com> Web Hosting: http://www.crd-hosting.com Consulting: http://www.crdev-consulting.com

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Programming Forums > Web Development and Design > PHP

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