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<?php
namespace Box\Spout\Common\Helper;
/**
* Class StringHelper
* This class provides helper functions to work with strings and multibyte strings.
*
* @codeCoverageIgnore
*/
class StringHelper
{
/** @var bool Whether the mbstring extension is loaded */
protected $hasMbstringSupport;
/** @var bool Whether the code is running with PHP7 or older versions */
private $isRunningPhp7OrOlder;
/** @var array Locale info, used for number formatting */
private $localeInfo;
/**
*
*/
public function __construct()
{
$this->hasMbstringSupport = \extension_loaded('mbstring');
$this->isRunningPhp7OrOlder = \version_compare(PHP_VERSION, '8.0.0') < 0;
$this->localeInfo = \localeconv();
}
/**
* Returns the length of the given string.
* It uses the multi-bytes function is available.
* @see strlen
* @see mb_strlen
*
* @param string $string
* @return int
*/
public function getStringLength($string)
{
return $this->hasMbstringSupport ? \mb_strlen($string) : \strlen($string);
}
/**
* Returns the position of the first occurrence of the given character/substring within the given string.
* It uses the multi-bytes function is available.
* @see strpos
* @see mb_strpos
*
* @param string $char Needle
* @param string $string Haystack
* @return int Char/substring's first occurrence position within the string if found (starts at 0) or -1 if not found
*/
public function getCharFirstOccurrencePosition($char, $string)
{
$position = $this->hasMbstringSupport ? \mb_strpos($string, $char) : \strpos($string, $char);
return ($position !== false) ? $position : -1;
}
/**
* Returns the position of the last occurrence of the given character/substring within the given string.
* It uses the multi-bytes function is available.
* @see strrpos
* @see mb_strrpos
*
* @param string $char Needle
* @param string $string Haystack
* @return int Char/substring's last occurrence position within the string if found (starts at 0) or -1 if not found
*/
public function getCharLastOccurrencePosition($char, $string)
{
$position = $this->hasMbstringSupport ? \mb_strrpos($string, $char) : \strrpos($string, $char);
return ($position !== false) ? $position : -1;
}
/**
* Formats a numeric value (int or float) in a way that's compatible with the expected spreadsheet format.
*
* Formatting of float values is locale dependent in PHP < 8.
* Thousands separators and decimal points vary from locale to locale (en_US: 12.34 vs pl_PL: 12,34).
* However, float values must be formatted with no thousands separator and a "." as decimal point
* to work properly. This method can be used to convert the value to the correct format before storing it.
*
* @see https://wiki.php.net/rfc/locale_independent_float_to_string for the changed behavior in PHP8.
*
* @param int|float $numericValue
* @return string
*/
public function formatNumericValue($numericValue)
{
if ($this->isRunningPhp7OrOlder && is_float($numericValue)) {
return str_replace(
[$this->localeInfo['thousands_sep'], $this->localeInfo['decimal_point']],
['', '.'],
$numericValue
);
}
return $numericValue;
}
}
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