PHP sprintf() Fungsi
Contoh
Ganti tanda persen (%) dengan variabel yang diteruskan sebagai argumen:
<?php
$number = 9;
$str = "Beijing";
$txt = sprintf("There are %u million bicycles in %s.",$number,$str);
echo $txt;
?>
Definisi dan Penggunaan
Fungsi sprintf() menulis string yang diformat ke variabel.
Parameter arg1, arg2, ++ akan disisipkan pada tanda persen (%) di string utama. Fungsi ini bekerja "langkah demi langkah". Pada tanda % pertama, arg1 dimasukkan, pada tanda % kedua, arg2 dimasukkan, dst.
Catatan: Jika ada lebih banyak % tanda daripada argumen, Anda harus menggunakan placeholder. Placeholder disisipkan setelah tanda %, dan terdiri dari nomor argumen dan "\$". Lihat contoh dua.
Tip: Fungsi terkait: printf() , vprintf() , vsprintf() , fprintf() dan vfprintf()
Sintaksis
sprintf(format,arg1,arg2,arg++)
Nilai Parameter
Parameter | Description |
---|---|
format | Required. Specifies the string and how to format the variables in it. Possible format values:
Additional format values. These are placed between the % and the letter (example %.2f):
Note: If multiple additional format values are used, they must be in the same order as above. |
arg1 | Required. The argument to be inserted at the first %-sign in the format string |
arg2 | Optional. The argument to be inserted at the second %-sign in the format string |
arg++ | Optional. The argument to be inserted at the third, fourth, etc. %-sign in the format string |
Detail Teknis
Nilai Kembali: | Mengembalikan string yang diformat |
---|---|
Versi PHP: | 4+ |
Lebih Banyak Contoh
Contoh
Menggunakan nilai format %f:
<?php
$number = 123;
$txt = sprintf("%f",$number);
echo $txt;
?>
Contoh
Penggunaan placeholder:
<?php
$number = 123;
$txt = sprintf("With 2 decimals: %1\$.2f
<br>With no decimals: %1\$u",$number);
echo $txt;
?>
Contoh
Demonstrasi dari semua kemungkinan nilai format:
<?php
$num1 = 123456789;
$num2 = -123456789;
$char = 50; // The ASCII Character 50 is 2
// Note: The format value "%%" returns a percent sign
echo sprintf("%%b = %b",$num1)."<br>"; // Binary number
echo sprintf("%%c = %c",$char)."<br>"; // The ASCII Character
echo sprintf("%%d = %d",$num1)."<br>"; // Signed decimal number
echo sprintf("%%d = %d",$num2)."<br>"; // Signed decimal number
echo sprintf("%%e = %e",$num1)."<br>"; // Scientific notation (lowercase)
echo sprintf("%%E = %E",$num1)."<br>"; // Scientific notation (uppercase)
echo sprintf("%%u = %u",$num1)."<br>"; // Unsigned decimal number (positive)
echo sprintf("%%u = %u",$num2)."<br>"; // Unsigned decimal number (negative)
echo sprintf("%%f = %f",$num1)."<br>"; // Floating-point number (local settings aware)
echo sprintf("%%F = %F",$num1)."<br>"; // Floating-point number (not local sett aware)
echo sprintf("%%g = %g",$num1)."<br>"; // Shorter of %e and %f
echo sprintf("%%G = %G",$num1)."<br>"; // Shorter of %E and %f
echo sprintf("%%o = %o",$num1)."<br>"; // Octal number
echo sprintf("%%s = %s",$num1)."<br>"; // String
echo sprintf("%%x = %x",$num1)."<br>"; // Hexadecimal number (lowercase)
echo sprintf("%%X = %X",$num1)."<br>"; // Hexadecimal number (uppercase)
echo sprintf("%%+d = %+d",$num1)."<br>"; // Sign specifier (positive)
echo sprintf("%%+d = %+d",$num2)."<br>"; // Sign specifier (negative)
?>
Contoh
Demonstrasi penentu string:
<?php
$str1 = "Hello";
$str2 = "Hello world!";
echo sprintf("[%s]",$str1)."<br>";
echo sprintf("[%8s]",$str1)."<br>";
echo sprintf("[%-8s]",$str1)."<br>";
echo sprintf("[%08s]",$str1)."<br>";
echo sprintf("[%'*8s]",$str1)."<br>";
echo sprintf("[%8.8s]",$str2)."<br>";
?>
Referensi String PHP