valid()
PHP valid() funksiyasi
❮ PHP SimpleXML ma’lumotnomasi
Misol
rewind() va next() chaqirilgandan keyin joriy element yaroqli ekanini tekshiring:
<?php
$note=<<<XML
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Do not forget me this weekend!</body>
</note>
XML;
$xml = new SimpleXMLIterator($note);
// rewind to the first element
$xml->rewind();
// check if valid
var_dump($xml->valid());
// move to the next element
$xml->next();
// check if valid
var_dump($xml->valid());
?>
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Ta’rif va qo‘llanilishi
valid() funksiyasi rewind() yoki next() chaqirilgandan keyin joriy element yaroqli ekanini tekshiradi.
Sintaksis
SimpleXMLIterator::valid()
Texnik tafsilotlar
| Qaytariladigan qiymat: | Element yaroqli bo‘lsa TRUE. Aks holda FALSE |
|---|---|
| PHP versiyasi: | 5.0+ |
Ko‘proq misollar
Misol
rewind() va next() chaqirilgandan keyin joriy element yaroqli ekanini tekshiring:
<?php
$xml = new SimpleXMLIterator('<books><book>Learn PHP</book></books>');
// rewind to the first element
$xml->rewind();
// check if valid
var_dump($xml->valid());
// move to the next element
$xml->next();
// check if valid - will be bool(false) because there is only one element
var_dump($xml->valid());
?>
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❮ PHP SimpleXML ma’lumotnomasi
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