PHPWales 2020 - June 3rd to June 4th

SimpleXMLElement::__toString

(PHP 5 >= 5.3.0, PHP 7)

SimpleXMLElement::__toStringReturns the string content

Açıklama

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.

Değiştirgeler

Bu işlevin değiştirgesi yoktur.

Dönen Değerler

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

Örnekler

Örnek 1 Get string content

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

Yukarıdaki örneğin çıktısı:

1 3

Ayrıca Bakınız

add a note add a note

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
2 years 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.
To Top