PHPda Forma Qiymatlarini Yuborilgandan Keyin Saqlash

Faraz qilaylik, bizda joriy sahifaga yuboriladigan ma’lum bir forma mavjud:

html<form action="" method="GET">
  <input name="test">
  <input type="submit">
</form>

Keling, forma yuborilgandan keyin kiritilgan ma’lumotlar bizning inputimizdan yo‘qolib ketmasligini ta’minlaylik:

html<form action="" method="GET">
  <input name="test" value="<?php echo $_GET['test'] ?>">
  <input type="submit">
</form>

Biroq, bunday yondashuv mukammal emas - sahifaga birinchi marta kirishda PHP $_GET['test'] mavjud emasligi sababli xatolik beradi.

Muammoni hal qilish uchun shart qo‘shamiz:

html<form action="" method="GET">
  <input
    name="test"
    value="<?php if (isset($_GET['test'])) echo $_GET['test'] ?>"
  >
  <input type="submit">
</form>