{"id":1818,"date":"2021-07-18T16:03:33","date_gmt":"2021-07-18T13:03:33","guid":{"rendered":"https:\/\/www.etemkeskin.com\/?p=1818"},"modified":"2021-07-18T16:06:21","modified_gmt":"2021-07-18T13:06:21","slug":"printf-print-echo-sprintf-vprintf-vfprintf-vsprintf-statements-in-php","status":"publish","type":"post","link":"https:\/\/www.etemkeskin.com\/index.php\/2021\/07\/18\/printf-print-echo-sprintf-vprintf-vfprintf-vsprintf-statements-in-php\/","title":{"rendered":"Printf, print, echo, sprintf, vprintf, vfprintf, vsprintf Statements in PHP"},"content":{"rendered":"\n

There are many ways to output string expressions in PHP<\/strong>. In this post, I will explain the expressions echo, print, printf, sprintf, vprintf, vfprintf, vsprintf<\/code>, which seem to be similar to each other but have various differences, and how they are used.<\/p>\n\n\n\n

1.) echo : <\/h3>\n\n\n\n
  • It prints a string output to the screen. String can contain HTML<\/strong> expressions.<\/li>
  • It is not a real function<\/strong>. It comes with the structure of the language.<\/li>
  • It does not return a value when executed. Doesn’t behave like a function<\/li>
  • The echo statement can be used as echo<\/strong> and echo()<\/strong>.<\/li>
  • If double quotes<\/strong> are used, variables can be used inside the string expression.<\/li><\/ul>\n\n\n\n
    $x = 5;\necho "Hello world!";\necho "<h2> PHP is wonderful language. <\/h2>";\necho "Number is : $x";\n\/\/ Output: Hello world!\n\/\/ Output: PHP is wonderful language.\n\/\/ Output: Number is : 5 <\/pre><\/div>\n\n\n\n
    \"\"
    Usage of the echo statement.<\/figcaption><\/figure><\/div>\n\n\n\n
    2.) print:<\/h3>\n\n\n\n
    • Outputs a formatted string.<\/li>
    • Since the print<\/strong> statement is not a real function, there is no need to use parentheses. It comes with the structure of the language.<\/li>
    • It always returns 1 when executed.<\/strong><\/li><\/ul>\n\n\n\n
      $x = print "Hello world! <br>";\necho $x;\n\/\/Output :  Hello world!\n\/\/Output : 1<\/pre><\/div>\n\n\n\n
      \"\"
      Screenshot of print statement<\/figcaption><\/figure><\/div>\n\n\n\n
      3.) printf:<\/h3>\n\n\n\n
      • Outputs a formatted string.<\/li>
      • Returns the length of the string output<\/strong> when executed.<\/li><\/ul>\n\n\n\n
        $number = 5;\n$str = "London";\n$x = printf("There are %u million people in %s. <br>",$number,$str);\necho $x;\n\/\/Output: There are 5 million people in London.\n\/\/Output: 42<\/pre><\/div>\n\n\n\n
        \"\"
        Screenshot of printf statement<\/figcaption><\/figure><\/div>\n\n\n\n
        4.) sprintf:<\/strong><\/h3>\n\n\n\n
        • Returns the formatted string.<\/li><\/ul>\n\n\n\n
          $number = 5;\n$str = "London";\n$x = sprintf("There are %u million people in %s. <br>",$number,$str);\necho $x;\n\/\/Output: There are 5 million people in London.<\/pre><\/div>\n\n\n\n
          \"\"
          Screen output of the value returned in the sprintf expression<\/figcaption><\/figure><\/div>\n\n\n\n
          If the arguments are to be used in more than one place, the \\$<\/strong> expression is used.<\/p>\n\n\n\n
          $number = 5;\n$str = "London";\n$x = sprintf("There are %1\\$u million people in %s. <br> Second usage place: %1\\$u",$number,$str);\necho $x;\n\/\/Output: There are 5 million people in 5.\n\t     Second usage place: 5<\/pre><\/div>\n\n\n\n
          5.) vprintf:<\/strong><\/h3>\n\n\n\n
          • Output a formatted string.<\/li>
          • It behaves like printf<\/strong>, except it takes array <\/strong>as an argument instead of variables.<\/li>
          • Returns the length of the formatted string.<\/li><\/ul>\n\n\n\n
            $number = 5;\n$str = "London";\n$x = vprintf("There are %u million people in %s. <br>", [$number,$str]);\necho $x;\n\/\/Output: There are 5 million people in London.\n\/\/Output: 42<\/pre><\/div>\n\n\n\n
            \"\"
            Screenshot of vprintf statement<\/figcaption><\/figure><\/div>\n\n\n\n
            6.) vsprintf:<\/em><\/strong><\/h3>\n\n\n\n
            • Returns the formatted string value.<\/li>
            • It behaves like sprintf<\/strong>, except it takes array<\/strong> as an argument instead of variables.<\/li><\/ul>\n\n\n\n
              $number = 5;\n$str = "London";\n$x = vsprintf("There are %u million people in %s. <br>", [$number,$str]);\necho $x;\n\/\/Output: There are 5 million people in London.<\/pre><\/div>\n\n\n\n
              \"\"
              Screen output of the value returned in the vsprintf expression<\/figcaption><\/figure><\/div>\n\n\n\n
              7.) vfprintf:<\/h3>\n\n\n\n
              • Writes a formatted string to a file.<\/li><\/ul>\n\n\n\n
                $number = 5;\n$str = "London";\n$file = fopen("test.txt","w");\nvfprintf("There are %u million people in %s. <br>", [$number,$str]);<\/pre><\/div>\n\n\n\n
                test.txt  dosyas\u0131na There are 5 million people in London expression<\/em> is written in test.txt<\/strong> .<\/p>\n\n\n\n
                The table below shows the format values you can use for variables in string expressions.<\/p>\n\n\n\n
                format<\/em><\/td>POSSIBLE FORMAT VALUES<\/strong>
                %% – Returns a percent sign
                %b – Binary number
                %c – The character according to the ASCII value
                %d – Signed decimal number (negative, zero or positive)
                %e – Scientific notation using a lowercase (e.g. 1.2e+2)
                %E – Scientific notation using a uppercase (e.g. 1.2E+2)
                %u – Unsigned decimal number (equal to or greather than zero)
                %f – Floating-point number (local settings aware)
                %F – Floating-point number (not local settings aware)
                %g – shorter of %e and %f
                %G – shorter of %E and %f
                %o – Octal number%s – String
                %x – Hexadecimal number (lowercase letters)
                %X – Hexadecimal number (uppercase letters)<\/td><\/tr><\/tbody><\/table>
                Values to use when formatting in PHP.<\/figcaption><\/figure>\n\n\n\n
                Good luck…<\/p>\n","protected":false},"excerpt":{"rendered":"
                There are many ways to output string expressions in PHP. In this post, I will explain the expressions echo, print, printf, sprintf, vprintf, vfprintf, vsprintf, which seem to be similar to each other but have various differences, and how they are used. 1.) echo : It prints a string output to the screen. String can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"yoast_head":"\nPrintf, print, echo, sprintf, vprintf, vfprintf, vsprintf Statements in PHP - blog website<\/title>\n<meta name=\"description\" content=\"There are many ways to output string expressions in PHP. 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