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PHP SimpleXMLElement addAttribute () function

Function SimpleXMLElement::addAttribute() - is a built-in function in PHP that adds an attribute to a SimpleXML object.Syntax:
void SimpleXMLElement::addAttribute ($name, $value, $namespace)
Parameter:This function takes three parameters as above and described below:
  • $name:This is a required parameter. Specifies the name of the added attribute.
  • $value:This is an optional parameter. It specifies the value of the attribute to be added.
  • $namespace:This is an optional parameter. It defines the namespace for the attribute.
Return Value:This function takes no parameters.Note: This feature is available for PHP 5.1.3 and later.Example : < ? php  
// Load XML document into $user $user = < < < XML < user >
< username > user123 < / username >
< name > firstname lastname < / name >
 + 91-9876543210 < / phone >
< detail > I am John Doe. Live in Kolkata, India. < / detail >
< / user >
XML;  
// Create a new SimpleXMLElement
// object from $user $xml = new SimpleXMLElement ( $user );  
// Add a child named “institution”
// and Hixforgex is appreciated $xml -> addChild ( " institution " , " engineerforengineer " );  
// Add an attribute named "type" and the value
// "Academic" in the institution element. $xml -> institution-> addAttribute ( "type" , "educational" );  
// Print in XML format echo $xml -> asXML(); echo $xml -> asXML ( ’savexmltofile.xml’ );  
?>
Output:
user123 firstname lastname + 91-9876543210 I am John Doe. Live in Kolkata, India. engineerforengineer 1
Source code in browser: xml version = "1.0" ?> < user > < username > user123 < / username > < name > firstname lastname < / name > < phone > + 91-9876543210 < / phone > < detail > I am John Doe. Live in Kolkata, India. < / detail > < institution type = "educational" > engineerforengineer < / institution > < / user > < br > 1 Saved XML file: Link: https://www.php.net/manual/en/simplexmlelement.addattribute.php

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