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Generator::throw

(PHP 5 >= 5.5.0, PHP 7)

Generator::throwThrow an exception into the generator

Descrierea

public Generator::throw ( Throwable $exception ) : mixed

Throws an exception into the generator and resumes execution of the generator. The behavior will be the same as if the current yield expression was replaced with a throw $exception statement.

If the generator is already closed when this method is invoked, the exception will be thrown in the caller's context instead.

Parametri

exception

Exception to throw into the generator.

Valorile întoarse

Returns the yielded value.

Istoricul schimbărilor

Versiune Descriere
7.0.0 The exception parameter also accepts Throwable now.

Exemple

Example #1 Throwing an exception into a generator

<?php
function gen() {
    echo 
"Foo\n";
    try {
        
yield;
    } catch (
Exception $e) {
        echo 
"Exception: {$e->getMessage()}\n";
    }
    echo 
"Bar\n";
}
 
$gen gen();
$gen->rewind();
$gen->throw(new Exception('Test'));
?>

Exemplul de mai sus va afișa:

Foo
Exception: Test
Bar

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User Contributed Notes 3 notes

up
1
gt199899 at gmail dot com
1 year ago
$gen = (function () {
    try {
        yield 1;
    } catch (Exception $e) {
        echo $e->getMessage();
    }
})();

$gen->throw(new Exception('gen throw exception'));
up
-5
jeudipolanco at ymail dot com
3 years ago
there have errors the form correct to do that is of this way:

function gen() {
    echo "Foo\n";
    try {
    
    throw new Exception('Prueba');

    } catch (Exception $e) {
        echo "Excepción: {$e->getMessage()}\n";
    }
    echo "Bar\n";
}

gen();

i resolved one tecnic of how work getMessage look at it:

$myarray=array();

if($respuesta == "Mark"){

for($i=5;$i<=16;$i++){
try {

    $palabra="soy la excepcion en la linea:".$i;

     throw new Exception($palabra);

}
catch(Exception $e) {

        $myarray[$e->getLine()] =$palabra;
       
        if($e->getLine() == $i){
  echo "<br><b>La excepción se creó en la línea : " .$e->getLine()."LA LINEA DICE:". $myarray[$e->getLine()]."</b>";
}//if

}//catch
   

}//for

}//if
up
-5
gt199899 at gmail dot com
1 year ago
$gen = (function () {
    try {
        yield 1;
    } catch (Exception $e) {
        echo $e->getMessage();
    }
})();

$gen->throw(new Exception('gen throw exception'));
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