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php常用函数-(10)php字符串处理常用的函数

addcslashes — 以 C 语言风格使用反斜线转义字符串中的字符

addslashes — 使用反斜线引用字符串

bin2hex — 将二进制数据转换成十六进制表示

chop — rtrim() 的别名

chr — 返回指定的字符

chunk_split — 将字符串分割成小块

count_chars — 返回字符串所用字符的信息

crc32 — 计算一个字符串的 crc32 多项式

crypt — One-way string encryption (hashing)

echo — Output one or more strings

explode — 使用一个字符串分割另一个字符串

fprintf — Write a formatted string to a stream

get_html_translation_table — Returns the translation table used by htmlspecialchars() and htmlentities()

hebrev — Convert logical Hebrew text to visual text

hebrevc — Convert logical Hebrew text to visual text with newline conversion

html_entity_decode — Convert all HTML entities to their applicable characters

htmlentities — Convert all applicable characters to HTML entities

htmlspecialchars_decode — Convert special HTML entities back to characters

htmlspecialchars — Convert special characters to HTML entities

implode — Join array elements with a string

join — 别名 implode()

levenshtein — Calculate Levenshtein distance between two strings

localeconv — Get numeric formatting information

ltrim — Strip whitespace (or other characters) from the beginning of a string

md5_file — Calculates the md5 hash of a given file

md5 — Calculate the md5 hash of a string

metaphone — Calculate the metaphone key of a string

money_format — Formats a number as a currency string

nl_langinfo — Query language and locale information

nl2br — Inserts HTML line breaks before all newlines in a string

number_format — Format a number with grouped thousands

ord — Return ASCII value of character

parse_str — Parses the string into variables

print — Output a string

printf — Output a formatted string

quoted_printable_decode — Convert a quoted-printable string to an 8 bit string

quotemeta — Quote meta characters

rtrim — Strip whitespace (or other characters) from the end of a string

setlocale — Set locale information

sha1_file — Calculate the sha1 hash of a file

sha1 — Calculate the sha1 hash of a string

similar_text — Calculate the similarity between two strings

soundex — Calculate the soundex key of a string

sprintf — Return a formatted string

sscanf — Parses input from a string according to a format

str_getcsv — Parse a CSV string into an array

str_ireplace — Case-insensitive version of str_replace().

str_pad — Pad a string to a certain length with another string

str_repeat — Repeat a string

str_replace — Replace all occurrences of the search string with the replacement string

str_rot13 — Perform the rot13 transform on a string

str_shuffle — Randomly shuffles a string

str_split — Convert a string to an array

str_word_count — Return information about words used in a string

strcasecmp — Binary safe case-insensitive string comparison

strchr — 别名 strstr()

strcmp — Binary safe string comparison

strcoll — Locale based string comparison

strcspn — Find length of initial segment not matching mask

strip_tags — Strip HTML and PHP tags from a string

stripcslashes — Un-quote string quoted with addcslashes()

stripos — Find position of first occurrence of a case-insensitive string

stripslashes — Un-quote string quoted with addslashes()

stristr — Case-insensitive strstr()

strlen — Get string length

strnatcasecmp — Case insensitive string comparisons using a “natural order” algorithm

strnatcmp — String comparisons using a “natural order” algorithm

strncasecmp — Binary safe case-insensitive string comparison of the first n characters

strncmp — Binary safe string comparison of the first n characters

strpbrk — Search a string for any of a set of characters

strpos — Find position of first occurrence of a string

strrchr — Find the last occurrence of a character in a string

strrev — Reverse a string

strripos — Find position of last occurrence of a case-insensitive string in a string

strrpos — Find position of last occurrence of a char in a string

strspn — Find length of initial segment matching mask

strstr — Find first occurrence of a string

strtok — Tokenize string

strtolower — Make a string lowercase

strtoupper — Make a string uppercase

strtr — Translate certain characters

substr_compare — Binary safe optionally case insensitive comparison of 2 strings from an offset, up to length characters

substr_count — Count the number of substring occurrences

substr_replace — Replace text within a portion of a string

substr — Return part of a string

trim — Strip whitespace (or other characters) from the beginning and end of a string

ucfirst — Make a string’s first character uppercase

ucwords — Uppercase the first character of each word in a string

vfprintf — Write a formatted string to a stream

vprintf — Output a formatted string

vsprintf — Return a formatted string

wordwrap — Wraps a string to a given number of characters using a string break character

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