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-rw-r--r--system/helpers/string_helper.php293
1 files changed, 138 insertions, 155 deletions
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index aed35c157..4eee2a262 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -37,22 +37,22 @@
// ------------------------------------------------------------------------
-/**
- * Trim Slashes
- *
- * Removes any leading/trailing slashes from a string:
- *
- * /this/that/theother/
- *
- * becomes:
- *
- * this/that/theother
- *
- * @param string
- * @return string
- */
if ( ! function_exists('trim_slashes'))
{
+ /**
+ * Trim Slashes
+ *
+ * Removes any leading/trailing slashes from a string:
+ *
+ * /this/that/theother/
+ *
+ * becomes:
+ *
+ * this/that/theother
+ *
+ * @param string
+ * @return string
+ */
function trim_slashes($str)
{
return trim($str, '/');
@@ -61,28 +61,26 @@ if ( ! function_exists('trim_slashes'))
// ------------------------------------------------------------------------
-/**
- * Strip Slashes
- *
- * Removes slashes contained in a string or in an array
- *
- * @param mixed string or array
- * @return mixed string or array
- */
if ( ! function_exists('strip_slashes'))
{
+ /**
+ * Strip Slashes
+ *
+ * Removes slashes contained in a string or in an array
+ *
+ * @param mixed string or array
+ * @return mixed string or array
+ */
function strip_slashes($str)
{
- if (is_array($str))
+ if ( ! is_array($str))
{
- foreach ($str as $key => $val)
- {
- $str[$key] = strip_slashes($val);
- }
+ return stripslashes($str);
}
- else
+
+ foreach ($str as $key => $val)
{
- $str = stripslashes($str);
+ $str[$key] = strip_slashes($val);
}
return $str;
@@ -91,16 +89,16 @@ if ( ! function_exists('strip_slashes'))
// ------------------------------------------------------------------------
-/**
- * Strip Quotes
- *
- * Removes single and double quotes from a string
- *
- * @param string
- * @return string
- */
if ( ! function_exists('strip_quotes'))
{
+ /**
+ * Strip Quotes
+ *
+ * Removes single and double quotes from a string
+ *
+ * @param string
+ * @return string
+ */
function strip_quotes($str)
{
return str_replace(array('"', "'"), '', $str);
@@ -109,16 +107,16 @@ if ( ! function_exists('strip_quotes'))
// ------------------------------------------------------------------------
-/**
- * Quotes to Entities
- *
- * Converts single and double quotes to entities
- *
- * @param string
- * @return string
- */
if ( ! function_exists('quotes_to_entities'))
{
+ /**
+ * Quotes to Entities
+ *
+ * Converts single and double quotes to entities
+ *
+ * @param string
+ * @return string
+ */
function quotes_to_entities($str)
{
return str_replace(array("\'","\"","'",'"'), array("'",""","'","""), $str);
@@ -127,23 +125,23 @@ if ( ! function_exists('quotes_to_entities'))
// ------------------------------------------------------------------------
-/**
- * Reduce Double Slashes
- *
- * Converts double slashes in a string to a single slash,
- * except those found in http://
- *
- * http://www.some-site.com//index.php
- *
- * becomes:
- *
- * http://www.some-site.com/index.php
- *
- * @param string
- * @return string
- */
if ( ! function_exists('reduce_double_slashes'))
{
+ /**
+ * Reduce Double Slashes
+ *
+ * Converts double slashes in a string to a single slash,
+ * except those found in http://
+ *
+ * http://www.some-site.com//index.php
+ *
+ * becomes:
+ *
+ * http://www.some-site.com/index.php
+ *
+ * @param string
+ * @return string
+ */
function reduce_double_slashes($str)
{
return preg_replace('#(^|[^:])//+#', '\\1/', $str);
@@ -152,131 +150,116 @@ if ( ! function_exists('reduce_double_slashes'))
// ------------------------------------------------------------------------
-/**
- * Reduce Multiples
- *
- * Reduces multiple instances of a particular character. Example:
- *
- * Fred, Bill,, Joe, Jimmy
- *
- * becomes:
- *
- * Fred, Bill, Joe, Jimmy
- *
- * @param string
- * @param string the character you wish to reduce
- * @param bool TRUE/FALSE - whether to trim the character from the beginning/end
- * @return string
- */
if ( ! function_exists('reduce_multiples'))
{
+ /**
+ * Reduce Multiples
+ *
+ * Reduces multiple instances of a particular character. Example:
+ *
+ * Fred, Bill,, Joe, Jimmy
+ *
+ * becomes:
+ *
+ * Fred, Bill, Joe, Jimmy
+ *
+ * @param string
+ * @param string the character you wish to reduce
+ * @param bool TRUE/FALSE - whether to trim the character from the beginning/end
+ * @return string
+ */
function reduce_multiples($str, $character = ',', $trim = FALSE)
{
$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
-
- if ($trim === TRUE)
- {
- return trim($str, $character);
- }
-
- return $str;
+ return ($trim === TRUE) ? trim($str, $character) : $str;
}
}
// ------------------------------------------------------------------------
-/**
- * Create a Random String
- *
- * Useful for generating passwords or hashes.
- *
- * @param string type of random string. basic, alpha, alunum, numeric, nozero, unique, md5, encrypt and sha1
- * @param int number of characters
- * @return string
- */
if ( ! function_exists('random_string'))
{
+ /**
+ * Create a Random String
+ *
+ * Useful for generating passwords or hashes.
+ *
+ * @param string type of random string. basic, alpha, alunum, numeric, nozero, unique, md5, encrypt and sha1
+ * @param int number of characters
+ * @return string
+ */
function random_string($type = 'alnum', $len = 8)
{
- switch($type)
+ switch ($type)
{
- case 'basic' : return mt_rand();
- break;
- case 'alnum' :
- case 'numeric' :
- case 'nozero' :
- case 'alpha' :
-
- switch ($type)
- {
- case 'alpha' : $pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
- break;
- case 'alnum' : $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
- break;
- case 'numeric' : $pool = '0123456789';
- break;
- case 'nozero' : $pool = '123456789';
- break;
- }
-
- $str = substr(str_shuffle(str_repeat($pool, ceil($len/strlen($pool)))),0,$len);
-
- return $str;
- break;
- case 'unique' :
- case 'md5' :
-
- return md5(uniqid(mt_rand()));
- break;
- case 'encrypt' :
- case 'sha1' :
-
- $CI =& get_instance();
- $CI->load->helper('security');
-
- return do_hash(uniqid(mt_rand(), TRUE), 'sha1');
- break;
+ case 'basic':
+ return mt_rand();
+ case 'alnum':
+ case 'numeric':
+ case 'nozero':
+ case 'alpha':
+ switch ($type)
+ {
+ case 'alpha':
+ $pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+ break;
+ case 'alnum':
+ $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+ break;
+ case 'numeric':
+ $pool = '0123456789';
+ break;
+ case 'nozero':
+ $pool = '123456789';
+ break;
+ }
+ return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
+ case 'unique':
+ case 'md5':
+ return md5(uniqid(mt_rand()));
+ case 'encrypt':
+ case 'sha1':
+ return sha1(uniqid(mt_rand(), TRUE));
}
}
}
// ------------------------------------------------------------------------
-/**
- * Add's _1 to a string or increment the ending number to allow _2, _3, etc
- *
- * @param string required
- * @param string What should the duplicate number be appended with
- * @param string Which number should be used for the first dupe increment
- * @return string
- */
if ( ! function_exists('increment_string'))
{
+ /**
+ * Add's _1 to a string or increment the ending number to allow _2, _3, etc
+ *
+ * @param string required
+ * @param string What should the duplicate number be appended with
+ * @param string Which number should be used for the first dupe increment
+ * @return string
+ */
function increment_string($str, $separator = '_', $first = 1)
{
preg_match('/(.+)'.$separator.'([0-9]+)$/', $str, $match);
-
return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
}
}
// ------------------------------------------------------------------------
-/**
- * Alternator
- *
- * Allows strings to be alternated. See docs...
- *
- * @param string (as many parameters as needed)
- * @return string
- */
if ( ! function_exists('alternator'))
{
- function alternator()
+ /**
+ * Alternator
+ *
+ * Allows strings to be alternated. See docs...
+ *
+ * @param string (as many parameters as needed)
+ * @return string
+ */
+ function alternator($args)
{
static $i;
- if (func_num_args() == 0)
+ if (func_num_args() === 0)
{
$i = 0;
return '';
@@ -288,15 +271,15 @@ if ( ! function_exists('alternator'))
// ------------------------------------------------------------------------
-/**
- * Repeater function
- *
- * @param string
- * @param int number of repeats
- * @return string
- */
if ( ! function_exists('repeater'))
{
+ /**
+ * Repeater function
+ *
+ * @param string
+ * @param int number of repeats
+ * @return string
+ */
function repeater($data, $num = 1)
{
return ($num > 0) ? str_repeat($data, $num) : '';
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-01 20:26:45 +0100