(PECL spl_types >= 0.1.0)
The SplString class is used to enforce strong typing of the string type.
SplString::__default
Example #1 SplString usage example
<?php
$string = new SplString("Testing");
try {
$string = array();
} catch (UnexpectedValueException $uve) {
echo $uve->getMessage() . PHP_EOL;
}
var_dump($string);
echo $string; // Outputs "Testing"
?>
以上例程会输出：
Value not a string
object(SplString)#1 (1) {
["__default"]=>
string(7) "Testing"
}
Testing