PHP 7.4
Typed Properties
id = $id;
$this->name = $name;
}
}
]]>
Arrow Functions
$x + $y;
]]>
__serialize/__unserialize
$this->prop];
}
public function __unserialize(array $data) {
$this->prop = $data['prop'];
}
}
]]>
Null Coalescing Assignment Operator
config['value'] = $this->config['value'] ?? 'default_value';
$this->config['value'] ??= 'default_value';
]]>
Weak References
Opcache Preloading
- Loads userspace code at server startup as if it was part of core PHP
- Trades some flexibility for performance
- Inspired by the “Class Data Sharing” feature in Java's Hotspot VM
Without Opcache Preloading
With Opcache Preloading
FFI - Foreign Function Interface
printf("Hello %s!\n", "world");
]]>
new("uint8_t[12]");
/* 4 colours: 000000, FF0000, 00FF00, 0000FF */
$cols[3] = 0xFF; $cols[7] = 0xFF; $cols[11] = 0xFF;
$gif = $ffi->ge_new_gif("test.gif", $w, $h, $cols, 2, 0);
for($i = 0; $i < 16; $i++) {
for ($j = 0; $j < $w*$h; $j++) {
$gif->frame[$j] = ($i*6 + $j) / 12 % 8;
}
echo "Add frame $i\n";
$ffi->ge_add_frame($gif, 5);
}
$ffi->ge_close_gif($gif);
]]>