vsprintf()
PHP vsprintf() funksiyasi
❮ PHP string funksiyalari ma’lumotnomasi
Misol
Formatlangan stringni o‘zgaruvchiga yozing:
<?php
$number = 9;
$str = "Beijing";
$txt = vsprintf("There are %u million bicycles in %s.",array($number,$str));
echo $txt;
?>
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Ta’rif va qo‘llanilishi
vsprintf() funksiyasi formatlangan stringni o‘zgaruvchiga yozadi.
sprintf() funksiyasidan farqli ravishda, vsprintf() funksiyasidagi argumentlar massivga joylashtiriladi. Massiv elementlari asosiy stringdagi foiz (%) belgilari o‘rniga qo‘yiladi. Bu funksiya "bosqichma-bosqich" ishlaydi: birinchi % belgisi o‘rniga massivning birinchi elementi, ikkinchi % belgisi o‘rniga ikkinchi elementi qo‘yiladi va hokazo.
Eslatma: Agar % belgilari argumentlardan ko‘p bo‘lsa, joy egalaridan (placeholders) foydalanishingiz kerak. Joy egasi % belgisidan keyin qo‘yiladi va argument raqami hamda "\$" dan iborat bo‘ladi. Ikkinchi misolga qarang.
Maslahat: Tegishli funksiyalar: fprintf(), vfprintf(), printf(), sprintf() va vprintf().
Sintaksis
vsprintf(format,argarray)
Parametr qiymatlari
| Parametr | Tavsif |
|---|---|
| format | Majburiy. Stringni va undagi o‘zgaruvchilarni qanday formatlashni belgilaydi. Mumkin bo‘lgan format qiymatlari:
Qo‘shimcha format qiymatlari. Ular % va harf orasiga qo‘yiladi (masalan, %.2f):
Eslatma: Agar bir nechta qo‘shimcha format qiymatlari ishlatilsa, ular yuqoridagi tartibda bo‘lishi shart. |
| argarray | Majburiy. Format stringidagi % belgilari o‘rniga qo‘yiladigan argumentlardan iborat massiv |
Texnik tafsilotlar
| Qaytariladigan qiymat: | Massiv qiymatlarini formatlangan string ko‘rinishida qaytaradi |
|---|---|
| PHP versiyasi: | 4.1.0+ |
Ko‘proq misollar
Misol
%f format qiymatidan foydalanish:
<?php
$num1 = 123;
$num2 = 456;
$txt = vsprintf("%f%f",array($num1,$num2));
echo $txt;
?>
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Misol
Joy egalaridan (placeholders) foydalanish:
<?php
$number = 123;
$txt = vsprintf("With 2 decimals: %1\$.2f
<br>With no decimals: %1\$u",array($number));
echo $txt;
?>
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Misol
Barcha mumkin bo‘lgan format qiymatlarini namoyish qilish uchun sprintf() funksiyasidan foydalaning:
<?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)
?>
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Misol
String spetsifikatorlarining namoyishi:
<?php
$str1 = "Hello";
$str2 = "Hello world!";
echo vsprintf("[%s]",array($str1))."<br>";
echo vsprintf("[%8s]",array($str1))."<br>";
echo vsprintf("[%-8s]",array($str1))."<br>";
echo vsprintf("[%08s]",array($str1))."<br>";
echo vsprintf("[%'*8s]",array($str1))."<br>";
echo vsprintf("[%8.8s]",array($str2))."<br>";
?>
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❮ PHP string funksiyalari ma’lumotnomasi
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