List of PHP binary safe functions

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List of PHP binary safe[1] functions. Briefly speaking, using binary safe functions to manipulate the string in Madarian or other unicode string.

Purpose Binary safe function NOT binary safe
"Return part of a string" mb_substr substr
"Get string length" mb_strlen strlen
"Convert a string to an array mb_str_split str_split
"Count the number of substring occurrences" mb_substr_count substr_count
"Replace all occurrences of the search string with the replacement string" str_replace
"Find the position of the first occurrence of a substring in a string" mb_substr strpos
"Replace text within a portion of a string" substr_replace
... ... ...