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PythonOut of all eight data types, PHP strings is considered one of the simplest, along with integers, floats, and booleans.
There are built-in PHP string functions for manipulating strings. One of the common uses is to use one of the PHP functions to split the string into smaller parts if the length of a string. You can also use them to have a specific PHP string replaced, modified, or perform other actions.
PHP String Functions: Main Tips
- As the naming suggests, PHP string functions help to perform different actions on string data.
- They are integrated into the core of PHP.
- Among the most basic and widely used are PHP compare strings and PHP trim string functions.
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List of Methods
Let's see the complete list of PHP string functions and their descriptions. The table is organized in alphabetical order, so you can always find a particular one quickly when you need to, say, have a certain PHP string replaced:
| Function | Description |
|---|---|
| addcslashes() | Makes a new string by adding backslashes to the front of each specified character |
| addslashes() | Makes a new string by adding backslashes to the front of predefined characters |
| bin2hex() | Makes a new string by converting every character of a string to hexadecimal values |
| chop() | Makes a new string by removing whitespace and other unnecessary characters from the right side of a string |
| chr() | Displays a character defined by a specified ASCII value |
| chunk_split() | Splits the string into smaller parts |
| convert_cyr_string() | Converts a string from one Cyrillic character-set to another |
| convert_uudecode() | Decodes a uuencoded string |
| convert_uuencode() | Makes a new string by converting using the uuencode algorithm |
| count_chars() | Gives information about characters that the string contains |
| crc32() | Calculates a 32-bit CRC for a string |
| crypt() | Makes a one-way hashing of a string |
| echo() | Displays the specified string(s) |
| explode() | Splits a string into array elements |
| fprintf() | Writes the string into specified output stream |
| get_html_translation_table() | Returns the translation table used by htmlspecialchars() and htmlentities() |
| hebrev() | Hebrew text is converted to plain text |
| hebrevc() | Converts Hebrew text to visual text and new lines (\n) into <br> |
| hex2bin() | Makes a new string by converting the specified string of hexadecimal characters to ASCII characters |
| html_entity_decode() | Makes a new string by converting HTML elements to characters |
| htmlentities() | Makes a new string by converting plain text to HTML entities |
| htmlspecialchars_decode() | Makes a new string by converting predefined HTML elements to characters |
| htmlspecialchars() | Makes a new string by converting predefined characters to HTML elements |
| implode() | Joins a PHP array to string |
| join() | Alternative to implode() |
| lcfirst() | Makes a new string by converting the first letter of the specified string to lowercase |
| levenshtein() | Returns the Levenshtein distance between two PHP strings |
| localeconv() | Returns information about locale numeric and monetary formatting |
| ltrim() | Makes a new string by removing whitespace and other unnecessary characters from the left side of a string |
| md5() | Creates the MD5 hash of a string |
| md5_file() | Creates the MD5 hash of a specified file |
| metaphone() | Creates a metaphone key of a string |
| money_format() | Makes a new string by formatting it as a currency string |
| nl_langinfo() | Returns information about a specific location |
| nl2br() | Puts new HTML line breaks in the front of every newline in a string |
| number_format() | Makes a new string by formatting a number. Groups thousands |
| ord() | Takes the first character of a string and returns its ASCII value |
| parse_str() | Puts a query string into specified variables |
| print() | Displays a specified string or multiple strings |
| printf() | Displays a specified formatted string or multiple strings |
| quoted_printable_decode() | Makes a new string by converting quoted-printable string into an 8-bit string |
| quoted_printable_encode() | Makes a new string by converting an 8-bit string into quoted-printable string |
| quotemeta() | Quotes meta characters |
| rtrim() | Makes a new string by removing whitespace and other unnecessary characters from the right side of a string |
| setlocale() | Sets information about the locale |
| sha1() | Creates a SHA-1 hash for a string |
| sha1_file() | Creates a SHA-1 hash for a file |
| similar_text() | Compares two PHP strings |
| soundex() | Creates a soundex key for a string |
| sprintf() | Takes a formatted string and writes it to a variable |
| sscanf() | Takes input from a string depending on the format |
| str_getcsv() | Takes CSV string and puts it into an array |
| str_ireplace() | Makes a new string by replacing characters of a string. The method is not case-sensitive |
| str_pad() | Makes a new string by padding it to a new PHP string length |
| str_repeat() | Makes a new string by repeating a specified string a set number of times |
| str_replace() | Makes PHP string replace part of its content. The method is case-sensitive |
| spstr_rot13() | Performs the ROT13 encoding on a string |
| str_shuffle() | Makes a new string by randomly shuffling all characters |
| str_split() | Splits PHP string to array |
| str_word_count() | Returns how many wors are in a string |
| strcasecmp() | Compares two specified PHP strings. The method is not case-sensitive |
| strchr() | Searches for the first occurrence of a specified string in another string |
| strcmp() | Compares two specified PHP strings. The method is case-sensitive |
| strcoll() | Compares two specified PHP strings. Comparison is based on locale string |
| strcspn() | Returns a count of characters until a specified character is found |
| strip_tags() | Removes PHP and HTML tags from a string |
| stripcslashes() | Makes a new string by removing quotes that were added using the addcslashes() method |
| stripslashes() | Makes a new string by removing quotes that were added using the addslashes() method |
| stripos() | Searches for the first occurrence of a specified string in another string. Returns the position. The method is not case-sensitive |
| stristr() | Searches for the first occurrence of a specified string in another string. The method is not case-sensitive |
| strlen() | Calculates PHP string length and returns it |
| strnatcasecmp() | Compares two specified PHP strings. Uses natural order algorithm. The method is not case-sensitive |
| strnatcmp() | Compares two specified PHP strings. Uses natural order algorithm. The method is case-sensitive |
| strncasecmp() | Compares two specified PHP strings. Compares only specified number of first characters. The method is not case-sensitive |
| strncmp() | Compares two specified PHP strings. Compares only specified number of first characters. The method is case-sensitive |
| strpbrk() | Searches for any of the specified characters in a given string |
| strpos() | Searches for the first occurrence of a specified string in another string. The method is case-sensitive |
| strrchr() | Searches for the last occurrence of a specified string in another string |
| strrev() | Makes a new string by reversing the given string |
| strripos() | Searches for the last position of a specified string in another string. The method is not case-sensitive |
| strrpos() | Searches for the last position of a specified string in another string. The method is case-sensitive |
| strspn() | Counts the number of characters found in a string that are in a specified charlist |
| strstr() | Searches for the first occurrence of a specified string in another string. The method is case-sensitive |
| strtok() | Splits the specified string into smaller strings |
| strtolower() | Changes all the characters of a string to lowercase letters |
| strtoupper() | Changes all the characters of a string to PHP uppercase letters |
| strtr() | Translates certain characters in a string |
| substr() | Cuts a part of a string and returns it |
| substr_compare() | Compares parts of two PHP strings. The start position and case-sensitivity can be specified |
| substr_count() | Returns how many times a substring occurs in a string |
| substr_replace() | Replaces a part of a string with another string |
| trim() | Makes a new string by removing whitespace and other unnecessary characters from both sides of a string |
| ucfirst() | Changes the first character of a string to PHP uppercase |
| ucwords() | Changes the first letter of every word to PHP uppercase |
| vfprintf() | Puts a formatted string to an output stream |
| vprintf() | Displays a formatted string in an output |
| vsprintf() | Puts a formatted string into a variable |
| wordwrap() | Wraps a given string into specified number of characters |
PHP String Functions: Summary
- When performing various actions using string data, PHP string functions come in handy. For example, you can easily turn PHP array to string or PHP string to array.
- PHP string functions are inbuilt and don't require any installation.
- One of the most commonly used methods are applied to PHP compare strings and PHP trim string.
