The XMLWriter::setIndentString() function is an inbuilt function in PHP which is used to set the string which will be used to indent each element/attribute of the resulting xml.
Syntax:
bool XMLWriter::setIndentString( string $indentString )
Parameters: This function accepts a single parameter $indentString which holds the string to be used as indent.
Return Value: This function returns TRUE on success or FALSE on failure.
Below examples illustrate the XMLWriter::setIndentString() function in PHP:
Example 1:
<?php   // Create a new XMLWriter instance $writer = new XMLWriter();   // Create the output stream as PHP   // Start the document $writer->startDocument('1.0', 'UTF-8');   // Enable the indents $writer->setIndent(true);   // Set the indent string $writer->setIndentString('--->');   // Start a element $writer->startElement('div');   // Start a element $writer->startElement('div');   // Add value to the element $writer->text('Hello World');   // End the element $writer->endElement();   // End the element $writer->endElement();   // End the document $writer->endDocument(); ?> |
Output: Press Ctrl+U to see the XML
Example 2:
<?php   // Create a new XMLWriter instance $writer = new XMLWriter();   // Create the output stream as PHP   // Start the document $writer->startDocument('1.0', 'UTF-8');   // Enable the indents $writer->setIndent(true);   // Set the indent string $writer->setIndentString('--->');   // Start a element $writer->startElement('div');   // Start a element $writer->startElement('div');   // Start a element $writer->startElement('div');   // Add value to the element $writer->text('This is a multi-indented text.');   // End the element $writer->endElement();   // End the element $writer->endElement();   // End the element $writer->endElement();   // End the document $writer->endDocument(); ?> |
Output:
Reference: https://www.php.net/manual/en/function.xmlwriter-set-indent-string.php
