PHP CString::toFloat方法代码示例

 /**
  * Returns the amount of time that elapsed since the very start and up to the moment when the first byte was sent
  * out.
  *
  * @return float The amount of time that elapsed until the first byte was sent out, in seconds.
  */
 public function requestStartTransferTime()
 {
     assert('$this->m_done && !$this->m_hasError', vs(isset($this), get_defined_vars()));
     $key = "starttransfer_time";
     if (CMap::hasKey($this->m_requestSummary, $key)) {
         $value = $this->m_requestSummary[$key];
         return is_float($value) || is_int($value) ? (double) $value : CString::toFloat($value);
     } else {
         return 0.0;
     }
 }

 /**
  * Returns the original value of a specified PHP's configuration option that is related to digital storage, as a
  * floating-point value.
  *
  * @param  string $optionName The name of the option.
  * @param  enum $inUnit **OPTIONAL. Default is** `CUUnit::BYTE`. The storage unit for the output value.
  *
  * @return float The value of the option.
  */
 public static function configOptionOrigStorageFloat($optionName, $inUnit = CUUnit::BYTE)
 {
     assert('is_cstring($optionName) && is_enum($inUnit)', vs(isset($this), get_defined_vars()));
     $optionValue = self::configOptionOrig($optionName);
     $srcUnit = self::storageUnitFromOptionValue($optionValue);
     $strValue;
     $found = CRegex::find($optionValue, "/^\\d+/", $strValue);
     assert('$found', vs(isset($this), get_defined_vars()));
     $value = CString::toFloat($strValue);
     return CUUnit::convertStoragef($value, $srcUnit, $inUnit);
 }

 /**
  * Filters a string or a collection of strings according to the expected output type(s) and returns the output
  * value(s).
  *
  * @param  mixed $inputStringOrDecodedCollection The string to be filtered or the array or map containing the
  * strings to be filtered. If the parameter's value is a JSON-encoded string, the output value is going to be
  * either an array or map.
  * @param  reference $success **OUTPUT.** After the method is called, the value of this parameter tells whether
  * the filtering was successful.
  *
  * @return mixed The output value or a collection of values of the expected type(s) after having been put through
  * the filter.
  */
 public function filter($inputStringOrDecodedCollection, &$success)
 {
     assert('is_cstring($inputStringOrDecodedCollection) || is_collection($inputStringOrDecodedCollection)', vs(isset($this), get_defined_vars()));
     $success = true;
     if ($this->m_expectedType != self::CARRAY && $this->m_expectedType != self::CMAP) {
         // The expected output type is not a collection; the input value must be of string type.
         if (!is_cstring($inputStringOrDecodedCollection)) {
             $success = false;
             return oop_x($this->m_defaultValue);
         }
         $inputString = $inputStringOrDecodedCollection;
         if ($this->m_expectedType == self::BOOL || $this->m_expectedType == self::INT || $this->m_expectedType == self::FLOAT || $this->m_expectedType == self::EMAIL || $this->m_expectedType == self::URL || $this->m_expectedType == self::IP) {
             // Trim the input string on both sides from whitespace, including Unicode whitespace and control
             // characters.
             $trimmingSubjectRe = CUString::TRIMMING_AND_SPACING_NORM_SUBJECT_RE;
             $inputString = CRegex::remove($inputString, "/^({$trimmingSubjectRe})+|({$trimmingSubjectRe})+\\z/u");
         }
         // Pre-process the string for integer and floating-point types.
         $looksLikeHex;
         if ($this->m_expectedType == self::INT || $this->m_expectedType == self::FLOAT) {
             if (CString::startsWith($inputString, "+")) {
                 // Remove the plus sign.
                 $inputString = CString::substr($inputString, 1);
             }
             $looksLikeHex = CRegex::find($inputString, "/^-?0x/i");
             if ($this->m_allowLeadingZeros && !($this->m_expectedType == self::INT && $this->m_allowHex && $looksLikeHex)) {
                 // Remove any leading zeros (except for special cases).
                 $inputString = CRegex::replace($inputString, "/^(\\D*)0*(?!\\b)/", "\$1");
             }
             if ($this->m_allowComma) {
                 $inputString = CRegex::remove($inputString, "/,(?=\\d{3}\\b)/");
             }
         }
         // Validate and sanitize the value according to its expected type.
         if ($this->m_expectedType == self::BOOL) {
             if (!CRegex::find($inputString, "/^(1|true|yes|on|0|false|no|off)\\z/i")) {
                 $success = false;
                 return $this->m_defaultValue;
             }
             return CString::equals($inputString, "1") || CString::equalsCi($inputString, "true") || CString::equalsCi($inputString, "yes") || CString::equalsCi($inputString, "on");
         }
         if ($this->m_expectedType == self::INT) {
             $value;
             if (!($this->m_allowHex && $looksLikeHex)) {
                 // Regular.
                 if (!CRegex::find($inputString, "/^-?(?!0(?!\\b))\\d+\\z/")) {
                     $success = false;
                     return $this->m_defaultValue;
                 }
                 $value = CString::toInt($inputString);
             } else {
                 // Hex.
                 if (!CRegex::find($inputString, "/^-?0x[0-9A-F]+\\z/i")) {
                     $success = false;
                     return $this->m_defaultValue;
                 }
                 $value = CString::toIntFromHex($inputString);
             }
             if (isset($this->m_intValidMin) && $value < $this->m_intValidMin || isset($this->m_intValidMax) && $value > $this->m_intValidMax) {
                 $success = false;
                 return $this->m_defaultValue;
             }
             if (isset($this->m_intClampingMin) && $value < $this->m_intClampingMin) {
                 $value = $this->m_intClampingMin;
             }
             if (isset($this->m_intClampingMax) && $value > $this->m_intClampingMax) {
                 $value = $this->m_intClampingMax;
             }
             return $value;
         }
         if ($this->m_expectedType == self::FLOAT) {
             if (!CRegex::find($inputString, "/^-?(?!0(?!\\b))\\d*\\.?\\d+(e[\\-+]?\\d+)?\\z/i")) {
                 $success = false;
                 return $this->m_defaultValue;
             }
             $value = CString::toFloat($inputString);
             if (isset($this->m_floatValidMin) && $value < $this->m_floatValidMin || isset($this->m_floatValidMax) && $value > $this->m_floatValidMax) {
                 $success = false;
                 return $this->m_defaultValue;
             }
             if (isset($this->m_floatClampingMin) && $value < $this->m_floatClampingMin) {
                 $value = $this->m_floatClampingMin;
             }
             if (isset($this->m_floatClampingMax) && $value > $this->m_floatClampingMax) {
                 $value = $this->m_floatClampingMax;
             }
             return $value;
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