Support for generators has been added via the yield keyword. Generators provide an easy way to implement simple iterators without the overhead or complexity of implementing a class that implements the Iterator interface.
A simple example that reimplements the range() function as a generator (at least for positive step values):
<?php
function xrange($start, $limit, $step = 1) {
for ($i = $start; $i <= $limit; $i += $step) {
yield $i;
}
}
echo 'Single digit odd numbers: ';
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foreach (xrange(1, 9, 2) as $number) {
echo "$number ";
}
?>
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Single digit odd numbers: 1 3 5 7 9
try-catch blocks now support a finally block for code that should be run regardless of whether an exception has been thrown or not.
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<?php
$array = [
[1, 2],
[3, 4],
];
foreach ($array as list($a, $b)) {
echo "A: $a; B: $b\n";
}
?>
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A: 1; B: 2 A: 3; B: 4
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empty() 锟斤拷锟斤拷支锟街达拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟界：
<?php
function always_false() {
return false;
}
if (empty(always_false())) {
echo 'This will be printed.';
}
if (empty(true)) {
echo 'This will not be printed.';
}
?>
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This will be printed.
Array and string literals can now be dereferenced directly to access individual elements and characters:
<?php
echo 'Array dereferencing: ';
echo [1, 2, 3][0];
echo "\n";
echo 'String dereferencing: ';
echo 'PHP'[0];
echo "\n";
?>
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Array dereferencing: 1 String dereferencing: P
A 锟铰碉拷锟斤拷锟斤拷锟较� API that makes it easier to securely hash and manage passwords using the same underlying library as crypt() in PHP has been added. See the documentation for password_hash() for more detail.
The Apache 2.4 handler SAPI is now supported on Windows.
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