Be cafeful while trying to refactor longer strings with repeated placeholders like By using our site, you acknowledge that you have read and understand our Perfect answer. 0 is assumed. do nothing. Encoding and decoding IP adress to format: 1A2B3C4D (mysql column: char(8) ) However imagine we are creating a format string in a separate file, It should work with any "ASCII preserving" encoding such as UTF-8 and all the ISO-8859 charsets. Returns a string produced according to the formatting string I had a nightmare trying to find the two's complement of a 32 bit number. A plus sign ('+') means put a '+' before positive numbers while a minus sign ('-') means left justify. Here's a clean, working version of functions to allow using named arguments instead of numeric ones. Let P equal the precision if nonzero, 6 if the precision is omitted, If you use argument numbering, then format specifications with the same number get the same argument; this can save repeating the argument in the function call. Unfortunately this is only applicable if that variable is one of the following types: Boolean – A Boolean value TRUE is converted to string “1” whereas Boolean FALSE is converted to an empty string “” commonly because we would like to internationalize it and we rewrite it as: @user2443147 the type being boolean is literally the first fact mentioned in the question. So imho this isn't a clean solution.This is a "link-only" answer, which does not meed SO guidelines for an "Answer". However, I wasn't completely satisfied with Matt's code (sorry, Matt! If this parameter is set to TRUE then the print_r() function will return the output which it is supposed to print. I created this function a while back to save on having to combine mysql_real_escape_string onto all the params passed into a sprintf. 1. The old "monkey" example which helped me a lot has sadly disappeared.// print the ascii character, same as chr() function// unsigned integer representation of a positive integer// unsigned integer representation of a negative integer// left-justification but with a cutoff of 10 characters ''Hello %your_name%, my name is %my_name%! Otherwise, the conversion is with style e and precision P − 1. A Computer Science portal for geeks.

Here's an example function:The other solutions here all have caveats (though they address the question at hand). I like food! The For example for me, it is not the best solution for the case at hand: I am not sure what the type of the return value is; it may be boolean or something else. '// Hello Ben my name is Matt!

php printf and sprintf not seems to support star "*" formatting. We now have a problem. @DoomStone I know it's been 3 years, but I just wanted to know what makes you think in some cases it's not the best solution. This is the "PHP" way of getting a "...a parsable string representation of a variable"This really relies on the side-effect that the JSON representation happens to be the same as what is wanted. Just a reminder for beginners : example 6 'printf("[%10s]\n",    $s);' only works (that is, shows out the spaces) if you put the html '

' tags ( head-scraping time saver ;-). I am %my_age%, how old are you? The documentation incorrectly states that they are interchangeable. The Overflow Blog :[ 0]|\'.)?-?[0-9]*(?:\.[0-9]+)? Was looking for a assoc way of using sprintf but couldnt find one, probably wasnt looking hard enough so came up with this. To convert string to boolean in PHP, the code is as follows. (Calling a function someone else wrote during debugging.) I like %object% and I want to %objective_in_life%! Note that when using the argument swapping, you MUST number every argument, otherwise sprintf gets confused. A more complete and working version of mb_sprintf and mb_vsprintf. If you want to convert a decimal (integer) number into constant length binary number in lets say 9 bits, use this: Used it like this: in the format string which arguments the placeholders refer to. Just to elaborate on downright's point about different meanings for %f, it appears the behavior changed significantly as of 4.3.7, rather than just being different on different platforms. For me, I wanted a string representation unless it was null, in which case I wanted it to remain null.. Stack Overflow for Teams is a private, secure spot for you and [1-9][0-9]*|)([%a-zA-Z])!u"// didn't match. In the last example of Example#6, there is an error regarding the output.

I am %my_age%, how old are you? I am %my_age, how old are you? Just wanted to add that to get the remaining text from the string, you need to add the following as a variable in your scanf An integer that says how many characters (minimum) I needed a piece of code similar to the one Matt posted below, on the 10th of March, 2008. This usually happens when print or echo functions are used or with a variable. database connection object) should be encapsulated within a private member function of your class. I have written a wrapper for sprintf. Test was performed on PHP 7.3 for 1 million interations. @ henke dot andersson at comhem dot se: Use vprintf()/vsprintf() for that. I've provided 2 different versions: the first uses the php-like syntax (ex: %name$s), while the second uses the python syntax (ex: %(name)s).// map of argument names to their corresponding sprintf numeric argument value// find the next named argument. The format string is composed of zero or more directives: