diff --git a/generated/strings.php b/generated/strings.php
index 3edf9f8d..0f3b62b3 100644
--- a/generated/strings.php
+++ b/generated/strings.php
@@ -173,312 +173,6 @@ function soundex(string $str): string
 }
 
 
-/**
- * Returns a string produced according to the formatting string
- * format.
- *
- * @param string $format The format string is composed of zero or more directives:
- * ordinary characters (excluding %) that are
- * copied directly to the result and conversion
- * specifications, each of which results in fetching its
- * own parameter.
- *
- * A conversion specification follows this prototype:
- * %[argnum$][flags][width][.precision]specifier.
- *
- * An integer followed by a dollar sign $,
- * to specify which number argument to treat in the conversion.
- *
- *
- * Flags
- *
- *
- *
- * Flag
- * Description
- *
- *
- *
- *
- * -
- *
- * Left-justify within the given field width;
- * Right justification is the default
- *
- *
- *
- * +
- *
- * Prefix positive numbers with a plus sign
- * +; Default only negative
- * are prefixed with a negative sign.
- *
- *
- *
- * (space)
- *
- * Pads the result with spaces.
- * This is the default.
- *
- *
- *
- * 0
- *
- * Only left-pads numbers with zeros.
- * With s specifiers this can
- * also right-pad with zeros.
- *
- *
- *
- * '(char)
- *
- * Pads the result with the character (char).
- *
- *
- *
- *
- *
- *
- * An integer that says how many characters (minimum)
- * this conversion should result in.
- *
- * A period . followed by an integer
- * who's meaning depends on the specifier:
- *
- *
- *
- * For e, E,
- * f and F
- * specifiers: this is the number of digits to be printed
- * after the decimal point (by default, this is 6).
- *
- *
- *
- *
- * For g and G
- * specifiers: this is the maximum number of significant
- * digits to be printed.
- *
- *
- *
- *
- * For s specifier: it acts as a cutoff point,
- * setting a maximum character limit to the string.
- *
- *
- *
- *
- *
- * If the period is specified without an explicit value for precision,
- * 0 is assumed.
- *
- *
- *
- *
- * Specifiers
- *
- *
- *
- * Specifier
- * Description
- *
- *
- *
- *
- * %
- *
- * A literal percent character. No argument is required.
- *
- *
- *
- * b
- *
- * The argument is treated as an integer and presented
- * as a binary number.
- *
- *
- *
- * c
- *
- * The argument is treated as an integer and presented
- * as the character with that ASCII.
- *
- *
- *
- * d
- *
- * The argument is treated as an integer and presented
- * as a (signed) decimal number.
- *
- *
- *
- * e
- *
- * The argument is treated as scientific notation (e.g. 1.2e+2).
- * The precision specifier stands for the number of digits after the
- * decimal point since PHP 5.2.1. In earlier versions, it was taken as
- * number of significant digits (one less).
- *
- *
- *
- * E
- *
- * Like the e specifier but uses
- * uppercase letter (e.g. 1.2E+2).
- *
- *
- *
- * f
- *
- * The argument is treated as a float and presented
- * as a floating-point number (locale aware).
- *
- *
- *
- * F
- *
- * The argument is treated as a float and presented
- * as a floating-point number (non-locale aware).
- * Available as of PHP 5.0.3.
- *
- *
- *
- * g
- *
- *
- * General format.
- *
- *
- * Let P equal the precision if nonzero, 6 if the precision is omitted,
- * or 1 if the precision is zero.
- * Then, if a conversion with style E would have an exponent of X:
- *
- *
- * If P > X ≥ −4, the conversion is with style f and precision P − (X + 1).
- * Otherwise, the conversion is with style e and precision P − 1.
- *
- *
- *
- *
- * G
- *
- * Like the g specifier but uses
- * E and F.
- *
- *
- *
- * o
- *
- * The argument is treated as an integer and presented
- * as an octal number.
- *
- *
- *
- * s
- *
- * The argument is treated and presented as a string.
- *
- *
- *
- * u
- *
- * The argument is treated as an integer and presented
- * as an unsigned decimal number.
- *
- *
- *
- * x
- *
- * The argument is treated as an integer and presented
- * as a hexadecimal number (with lowercase letters).
- *
- *
- *
- * X
- *
- * The argument is treated as an integer and presented
- * as a hexadecimal number (with uppercase letters).
- *
- *
- *
- *
- *
- *
- * General format.
- *
- * Let P equal the precision if nonzero, 6 if the precision is omitted,
- * or 1 if the precision is zero.
- * Then, if a conversion with style E would have an exponent of X:
- *
- * If P > X ≥ −4, the conversion is with style f and precision P − (X + 1).
- * Otherwise, the conversion is with style e and precision P − 1.
- *
- * The c type specifier ignores padding and width
- *
- * Attempting to use a combination of the string and width specifiers with character sets that require more than one byte per character may result in unexpected results
- *
- * Variables will be co-erced to a suitable type for the specifier:
- *
- * Type Handling
- *
- *
- *
- * Type
- * Specifiers
- *
- *
- *
- *
- * string
- * s
- *
- *
- * integer
- *
- * d,
- * u,
- * c,
- * o,
- * x,
- * X,
- * b
- *
- *
- *
- * double
- *
- * g,
- * G,
- * e,
- * E,
- * f,
- * F
- *
- *
- *
- *
- *
- * @param mixed $params
- * @return string Returns a string produced according to the formatting string
- * format.
- * @throws StringsException
- *
- */
-function sprintf(string $format, ...$params): string
-{
-    error_clear_last();
-    if ($params !== []) {
-        $result = \sprintf($format, ...$params);
-    } else {
-        $result = \sprintf($format);
-    }
-    if ($result === false) {
-        throw StringsException::createFromPhpError();
-    }
-    return $result;
-}
-
-
 /**
  * Returns the portion of string specified by the
  * start and length parameters.
diff --git a/generator/config/specialCasesFunctions.php b/generator/config/specialCasesFunctions.php
index f56b5613..4e63c46e 100644
--- a/generator/config/specialCasesFunctions.php
+++ b/generator/config/specialCasesFunctions.php
@@ -4,10 +4,11 @@
  * They are declared in lib/special_cases.php
  */
 return [
-    'json_decode',
     'apc_fetch',
     'apcu_fetch',
-    'preg_replace',
+    'json_decode',
     'openssl_encrypt',
+    'preg_replace',
     'readdir',
+    'sprintf',
 ];
diff --git a/lib/special_cases.php b/lib/special_cases.php
index 05682b8a..9526fdcd 100644
--- a/lib/special_cases.php
+++ b/lib/special_cases.php
@@ -13,6 +13,7 @@
 use Safe\Exceptions\JsonException;
 use Safe\Exceptions\OpensslException;
 use Safe\Exceptions\PcreException;
+use Safe\Exceptions\StringsException;
 
 /**
  * Wrapper for json_decode that throws when an error occurs.
@@ -209,3 +210,41 @@ function openssl_encrypt(string $data, string $method, string $key, int $options
     }
     return $result;
 }
+
+/**
+ * Return a formatted string
+ * @link https://php.net/manual/en/function.sprintf.php
+ * @param string $format <p>
+ * The format string is composed of zero or more directives:
+ * ordinary characters (excluding %) that are
+ * copied directly to the result, and conversion
+ * specifications, each of which results in fetching its
+ * own parameter. This applies to both sprintf
+ * and printf.
+ * </p>
+ * <p>
+ * Each conversion specification consists of a percent sign
+ * (%), followed by one or more of these
+ * elements, in order:
+ * An optional sign specifier that forces a sign
+ * (- or +) to be used on a number. By default, only the - sign is used
+ * on a number if it's negative. This specifier forces positive numbers
+ * to have the + sign attached as well, and was added in PHP 4.3.0.
+ * @param bool|float|int|string $args [optional] <p>
+ * </p>
+ * @return string a string produced according to the formatting string
+ * format.
+ */
+function sprintf(string $format, ...$args): string
+{
+    error_clear_last();
+    if ($args === []) {
+        $result = \sprintf($format);
+    } else {
+        $result = \sprintf($format, ...$args);
+    }
+    if ($result === false) {
+        throw StringsException::createFromPhpError();
+    }
+    return $result;
+}