在PHP中,创建数组时避免类型错误的方法有以下几点:
$array = [
'key1' => 123,
'key2' => 456.78,
'key3' => 'hello',
'key4' => true
];
$array: array<string, int> = [
'key1' => 123,
'key2' => 456,
'key3' => 789
];
is_int()
、is_float()
、is_string()
、is_bool()
等函数来检查数组键和值的类型。这样可以确保在操作数组时不会发生类型错误。if (is_int($array['key1'])) {
echo "Key1 is an integer.";
}
if (is_string($array['key3'])) {
echo "Key3 is a string.";
}
$array = [
'key1' => 123,
'key2' => 'hello',
'key3' => 456.78
];
遵循以上建议,可以帮助你在PHP中创建数组时避免类型错误。