phprelaxng,PHPXMLReadersetRelaxNGSchemaSource()用法及代码示例

XMLReader::setRelaxNGSchemaSource()函数是PHP中的内置函数&＃xff0c;用于设置包含RelaxNG Schema的数据以用于验证。 setRelaxNGSchemaSource()函数不同于setRelaxNGSchema()函数&＃xff0c;因为前者将规则接受为字符串变量&＃xff0c;而后者将规则接受为.rng文件。

用法:

bool XMLReader::setRelaxNGSchemaSource( string $source )

参数&＃xff1a;此函数接受单个参数$source&＃xff0c;该参数包含包含RelaxNG Schema的字符串。

返回值&＃xff1a;如果成功&＃xff0c;此函数将返回TRUE&＃xff0c;否则将返回FALSE。

以下示例说明了PHP中的XMLReader::setRelaxNGSchemaSource()函数&＃xff1a;

范例1&＃xff1a;

data.xml

index.php

// Create a new XMLReader instance

$XMLReader &＃61; new XMLReader();

// Open the XML file

$XMLReader->open(&＃39;data.xml&＃39;);

// Create rule as a string

$RNG &＃61; "

xmlns&＃61;\"http://relaxng.org/ns/structure/1.0\">

";

// Load the rule

$XMLReader->setRelaxNGSchemaSource($RNG);

// Iterate through the XML nodes

while ($XMLReader->read()) {

if ($XMLReader->nodeType &＃61;&＃61; XMLREADER::ELEMENT) {

// Check if XML follows the relaxNG rule

if ($XMLReader->isValid()) {

echo "This document is valid!
";

}

}

}

?>

输出&＃xff1a;

This document is valid!

This document is valid!

This document is valid!

This document is valid!

This document is valid!

This document is valid!

This document is valid!

范例2&＃xff1a;

data.xml

index.php

// Create a new XMLReader instance

$XMLReader &＃61; new XMLReader();

// Open the XML file

$XMLReader->open(&＃39;data.xml&＃39;);

// Create rule as a string

$RNG &＃61; "

xmlns&＃61;\"http://relaxng.org/ns/structure/1.0\">

";

// Load the rule

$XMLReader->setRelaxNGSchemaSource($RNG);

// Iterate through the XML nodes

while ($XMLReader->read()) {

if ($XMLReader->nodeType &＃61;&＃61; XMLREADER::ELEMENT) {

// Check if XML follows the relaxNG rule

if (!$XMLReader->isValid()) {

echo "This document is not valid!
";

}

}

}

?>

输出&＃xff1a;

This document is not valid!

This document is not valid!

This document is not valid!