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SimpleXMLElement::__toString

(PHP 5 >= 5.3.0, PHP 7)

SimpleXMLElement::__toStringReturns the string content

Descrierea

public SimpleXMLElement::__toString ( void ) : string

Returns text content that is directly in this element. Does not return text content that is inside this element's children.

Parametri

Această funcție nu are parametri.

Valorile întoarse

Returns the string content on success or an empty string on failure.

Exemple

Example #1 Get string content

<?php
$xml 
= new SimpleXMLElement('<a>1 <b>2 </b>3</a>');
echo 
$xml;
?>

Exemplul de mai sus va afișa:

1 3

A se vedea și

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User Contributed Notes 3 notes

up
10
Patanjali
3 years ago
[Someone remove that other Patanjali's note, because it has errors! :-(]

For those for whom it may not be immediately obvious from the example, the echo is what is forcing __toString() to be used.

However, to assign the text of a node (but not its children) to a variable:

$XML = new SimpleXMLElement('<p>Hello<span> world</span>.<span> Good day!</span></p>');

$Text = $XML->__toString();

is effectively:
$Text = 'Hello.'; // The <span>s are ignored.

Either of:
$Text = $XML->span->__toString();
$Text = $XML->span[0]->__toString();

is effectively:
$Text = ' world'; // Only the first <span> is used.

$Text = $XML->span[1]->__toString();

is effectively:
$Text = ' Good day!'; // Only the second <span> is used.
up
1
mmj at example dot net
1 year ago
__toString() is not intended to be called directly.

Instead, it defines what is returned when the object is cast to string, either explicitly with:

(string)$element

Or implicitly, when used in certain contexts which would cause a conversion to string.
up
-18
Patanjali
3 years ago
For those for whom it may not be immediately obvious from the example, to assign the text of a node (but not its children) to a variable:

$XML = new SimpleXMLElement('<p>Hello<span> world</span>.<span> Good day!</span></p>');

Either:
$Text = $XML;
$Text = $XML->__String();

is effectively:
$Text = 'Hello.'; // The <span>s are ignored.

Either of:
$Text = $XML->span;
$Text = $XML->span[0];

is effectively:
$Text = ' world'; // Only the first <span> is used.

$Text = $XML->span[1];

is effectively:
$Text = ' Good day!'; // Only the second <span> is used.
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