PHP vprintf() function Last Updated : 11 Jul, 2025 Comments Improve Suggest changes Like Article Like Report The vprintf() function in PHP is an inbuilt function which is used to display array values as a formatted string Display array values as a formatted string according to format it is work similar as printf() but accepts an array of arguments, in place of variables number of arguments. Returns the length of the outputted string on success.Syntax: vprintf (format, array_arguments) Parameters: format: it is required parameter it specifies how will the string formatted.Possible format values:%% - Returns a percent sign%b - Binary number%d - Signed decimal number (negative, zero or positive)%u - Unsigned decimal number (equal to or greater than zero)%x - Hexadecimal number (lowercase letters)%X - Hexadecimal number (uppercase letters)%f - Floating-point number (local settings aware)%F - Floating-point number (not local settings aware)%o - Octal number%c - The character according to the ASCII value%s - String%e - Scientific notation using a lowercase (e.g. 1.2e+2)%g - shorter of %e and %f%E - Scientific notation using a uppercase (e.g. 1.2E+2)%G - shorter of %E and %farray_arguments array arguments here for which need to format. Program 1: This program will be showing uses of % b d u x X f F o formats using vprintf function. php <?php $obj = new stdClass(); $obj->val1 = 9; $obj->val2 = 10; $obj->val3 = 15; $obj->val4 = -1; echo "using %% format: "; // below is using of vprintf function // for printing % format vprintf('%% %% %% %%', $obj); echo "\nusing %b format: "; // below is using of vprintf function // for format %b will print equivalent // binary number vprintf('%b %b %b %b', $obj); echo "\nusing %d format: "; // below is using of vprintf function // for %d format vprintf('%d %d %d %d', $obj); echo "\nusing %u format: "; // below is using of vprintf function // for % u (unsigned decimal) format vprintf('%u %u %u %u', $obj); echo "\nusing %x format: "; // below is using of vprintf function // for %x Hexadecimal number (lowercase letters) format vprintf('%x %x %x %x', $obj); echo "\nusing %X format: "; // below is using of vprintf function // for %X Hexadecimal number (uppercase letters) format vprintf('%X %X %X %X', $obj); echo "\nusing %f format: "; // below is using of vprintf function // for %f Floating-point number (local settings aware) vprintf('%f %f %f %f', $obj); echo "\nusing %F format: "; // below is using of vprintf function // for %F Floating-point number (not local settings aware) vprintf('%F %F %F %F', $obj); echo "\nusing %o format: "; // below is using of vprintf function // for %o octal number vprintf('%o %o %o %o', $obj); ?> Output: using %% format: % % % % using %b format: 1001 1010 1111 1111111111111111111111111111111111111111111111111111111111111111 using %d format: 9 10 15 -1 using %u format: 9 10 15 18446744073709551615 using %x format: 9 a f ffffffffffffffff using %X format: 9 A F FFFFFFFFFFFFFFFF using %f format: 9.000000 10.000000 15.000000 -1.000000 using %F format: 9.000000 10.000000 15.000000 -1.000000 using %o format: 11 12 17 1777777777777777777777 Program 2: This program will be showing uses of c and s formats using vprintf function. PHP <?php $obj = new stdClass(); $obj->val1 = 65; $obj->val2 = 66; $obj->val3 = 97; $obj->val4 = 98; echo "using %c format: "; // below is using of vprintf function // for printing %c format will be print // ASCII character vprintf('%c %c %c %c', $obj); echo "\nusing %s format: "; // below is using of vprintf function // for format %s will print as string vprintf('%s %s %s %s', $obj); ?> Output: using %c format: A B a b using %s format: 65 66 97 98 Program 3: This program will be showing uses of e g E G formats using vprintf function. php <?php $obj = new stdClass(); $obj->val1 = 999999999; $obj->val2 = 145956566; $obj->val3 = 111111111; $obj->val4 = 100000000; echo "using %e format: "; // below is using of vprintf function // for printing %e format will be print // Scientific notation (lowercase) vprintf('%e %e %e %e', $obj); echo"\nusing %g format: "; // below is using of vprintf function // for format %g will be print // Shorter of %e and %f vprintf('%g %g %g %g', $obj); echo "\nusing %E format: "; // below is using of vprintf function // for format %E will print // Scientific notation (uppercase) vprintf('%E %E %E %E', $obj); echo "\nusing %G format: "; // below is using of vprintf function // for format %G will be print // Shorter of %E and %f vprintf('%G %G %G %G', $obj); ?> Output: using %e format: 1.000000e+9 1.459566e+8 1.111111e+8 1.000000e+8 using %g format: 1.0e+9 1.45957e+8 1.11111e+8 1.0e+8 using %E format: 1.000000E+9 1.459566E+8 1.111111E+8 1.000000E+8 using %G format: 1.0E+9 1.45957E+8 1.11111E+8 1.0E+8 Program 4: In this program, all four variable will be print respectively 10 20 30 40 space separated using vprintf function. PHP <?php $obj = new stdClass(); $obj->val1 = 'gfg 1'; $obj->val2 = 'gfg 2'; $obj->val3 = 'gfg 3'; $obj->val4 = 'gfg 4'; // below is using of vprintf function vprintf('%-10s %-20s %-30s %-40s', $obj); ?> Output: gfg 1 gfg 2 gfg 3 gfg 4 Comment More infoAdvertise with us Next Article PHP Syntax V vt_m Follow Improve Article Tags : Misc Web Technologies PHP PHP-function Practice Tags : Misc Similar Reads PHP Tutorial PHP is a popular, open-source scripting language mainly used in web development. It runs on the server side and generates dynamic content that is displayed on a web application. PHP is easy to embed in HTML, and it allows developers to create interactive web pages and handle tasks like database mana 9 min read BasicsPHP SyntaxPHP, a powerful server-side scripting language used in web development. It’s simplicity and ease of use makes it an ideal choice for beginners and experienced developers. This article provides an overview of PHP syntax. 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