Belajar PHP: Perbedaan Fungsi echo(), print(), dan printf() pada PHP

PHP memiliki beberapa fungsi untuk mencetak teks ke layar:

fungsi echo();
fungsi print();
fungsi printf().

Fungsi-fungsi ini akan sering kita gunakan dalam pemrograman PHP.

Lalu, apa saja sih perbedaan dari tiga fungsi ini?

Mari kita bahas…
Fungsi echo()

Fungi echo() adalah fungsi untuk menampilkan teks ke layar. Fungsi ini dapat digunakan dengan tanda kurung maupun tanpa tanda kurung.

<?php
echo "<h2>Belajar PHP itu mudah!</h2>";
echo("Hello world!<br>");
echo "Aku sedang belajar PHP!<br>";
echo "Ini ", "teks ", "yang ", "dibuat ", "terpisah.";
?>

Hasilnya:

Fungsi echo() tidak akan mengembalikan apa-apa setelah dieksekusi. Dia hanya bertugas menampilkan teks saja.
Fungsi print()

Fungsi print() sama seperti fungsi echo(). Dia juga digunakan untuk menampilkan teks ke layar. Fungsi print() juga bisa digunakan tanpa tanda kurung.

Perbedaannya dengan echo():

Fungsi print() akan selalu mengembalikan nilai 1 saat dieksekusi, sedangkan echo() tidak mengembalikan apa-apa.
Fungsi print() hanya boleh diberikan satu parameter saja, sedangkan echo() boleh lebih dari satu.

Apabila kita membuat variabel lalu mengisinya dengan fungsi print() seperti ini:

$cetak = print(“Hello World!”);

Maka variabel $cetak akan bernilai 1.

Apabila kita memberikan dua paramater ke dalam fungsi print(), maka akan terjadi error.

print(“Hello”, “World”); // <– ini akan error

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