XMLWriter::startDocument()函數是PHP中的一個內置函數,用於啟動文檔。然後,該文檔需要以XMLWriter::endDocument函數結尾。
用法:
bool XMLWriter::startDocument( string $version, string $encoding, string $standalone )
參數:此函數接受上述和以下所述的三個參數:
- $version (Optional):它指定文檔的版本號作為XML聲明的一部分。
- $encoding (Optional):它指定文檔的編碼作為XML聲明的一部分。
- $standalone (Optional):它指定文檔是否獨立。
返回值:如果成功,此函數將返回TRUE,否則將返回FALSE。
以下示例說明了PHP中的XMLWriter::startDocument()函數:
範例1:
<?php
// Create a new XMLWriter instance
$writer = new XMLWriter();
// Create the output stream as PHP
$writer->openURI('php://output');
// Start the document
$writer->startDocument('1.0', 'UTF-8');
// Start a element
$writer->startElement('div');
// Add value to the element
$writer->text('GeeksforGeeks');
// End the element
$writer->endElement();
// End the document
$writer->endDocument();
?>
輸出:
<?xml version="1.0" encoding="UTF-8"?> <div>GeeksforGeeks</div>
範例2:
<?php
// Create a new XMLWriter instance
$writer = new XMLWriter();
// Create the output stream as PHP
$writer->openURI('php://output');
// Start the document
$writer->startDocument('1.0', 'UTF-8');
// Start a h1 element
$writer->startElement('h1');
// Start the style attribute
$writer->startAttribute('style');
// Add value to the attribute
$writer->text('color:orange;font-size:80px;');
// End the attribute
$writer->endAttribute();
// Add value to the element
$writer->text('GeeksforGeeks');
// End the element
$writer->endElement();
// End the document
$writer->endDocument();
?>
輸出:
參考: https://www.php.net/manual/en/function.xmlwriter-start-document.php
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