What is chr in php

What is chr in php

PHP chr() Function The chr() function returns a character from the specified ASCII value. The ASCII value can be specified in decimal, octal, or hex values.

Is CHR () and ord () is opposite function in PHP?

To convert to ASCII from textual characters, you should use the chr() function, which takes an ASCII value as its only parameter and returns the text equivalent if there is one. The ord() function does the opposite — it takes a string and returns the equivalent ASCII value.

What is ASCII value of A to Z?

The ASCII value of the lowercase alphabet is from 97 to 122. And, the ASCII value of the uppercase alphabet is from 65 to 90.

What is CHR 32?

If not mistaken chr(int) converts the int (Decimal value) to the character in the ascii code. char(0) is Null char(32) is space.

What does CHR () do?

Python chr() function takes integer argument and return the string representing a character at that code point. Since chr() function takes an integer argument and converts it to character, there is a valid range for the input.

What is CHR () and Ord ()?

Python’s built-in function chr() is used for converting an Integer to a Character, while the function ord() is used to do the reverse, i.e, convert a Character to an Integer. Let’s take a quick look at both these functions and understand how they can be used.

What is CHR ord (‘ A?

(C) a. (D) Error. Answer: (A) Explanation: ord() function converts a character into its ASCII notation and chr() converts the ASCII to character.

chr — Generate a single-byte string from a number

Description

Returns a one-character string containing the character specified by interpreting codepoint as an unsigned integer.

This can be used to create a one-character string in a single-byte encoding such as ASCII, ISO-8859, or Windows 1252, by passing the position of a desired character in the encoding’s mapping table. However, note that this function is not aware of any string encoding, and in particular cannot be passed a Unicode code point value to generate a string in a multibyte encoding like UTF-8 or UTF-16.

This function complements ord().

Parameters

An integer between 0 and 255.

Values outside the valid range (0..255) will be bitwise and’ed with 255, which is equivalent to the following algorithm:

while ($bytevalue < 0) < $bytevalue += 256; > $bytevalue %= 256;

Return Values

A single-character string containing the specified byte.

Changelog

Version	Description
7.4.0	The function no longer silently accepts unsupported codepoint s, and casts these to 0 .

Examples

Example #1 chr() example

 // Assumes the string will be used as ASCII or an ASCII-compatible encoding $str = "The string ends in escape: "; $str .= chr(27); /* add an escape character at the end of $str */ /* Often this is more useful */ $str = sprintf("The string ends in escape: %c", 27); ?>

Example #2 Overflow behavior

 echo chr(-159), chr(833), PHP_EOL; ?>

The above example will output:

Example #3 Building a UTF-8 string from individual bytes

 $str = chr(240) . chr(159) . chr(144) . chr(152); echo $str; ?>

The above example will output:

See Also

• sprintf() — Return a formatted string with a format string of %c
• ord()
• An » ASCII-table
• mb_chr()
• IntlChar::chr()

PHP 8.2

(PHP 4, 5, 7, 8) chown Changes file owner Attempts to change the owner of file filename user Path to the file.

(PHP 4 4.0.5, 7, 8) chroot Change the directory Changes the root directory of current process and working This function only available to GNU and BSD systems,

(PHP 4, 5, 7, 8) chunk_split a string into smaller chunks Can be used to split string into smaller chunks which is useful for e.g.

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What is chr in php

chr — Generate a single-byte string from a number

Description

Returns a one-character string containing the character specified by interpreting codepoint as an unsigned integer.

This can be used to create a one-character string in a single-byte encoding such as ASCII, ISO-8859, or Windows 1252, by passing the position of a desired character in the encoding’s mapping table. However, note that this function is not aware of any string encoding, and in particular cannot be passed a Unicode code point value to generate a string in a multibyte encoding like UTF-8 or UTF-16.

This function complements ord() .

Parameters

An integer between 0 and 255.

Values outside the valid range (0..255) will be bitwise and’ed with 255, which is equivalent to the following algorithm:

Return Values

A single-character string containing the specified byte.

Changelog

Version	Description
7.4.0	The function no longer silently accepts unsupported codepoint s, and casts these to 0 .

Examples

Example #1 chr() example

// Assumes the string will be used as ASCII or an ASCII-compatible encoding

$str = «The string ends in escape: » ;
$str .= chr ( 27 ); /* add an escape character at the end of $str */

/* Often this is more useful */

$str = sprintf ( «The string ends in escape: %c» , 27 );
?>

Example #2 Overflow behavior

The above example will output:

Example #3 Building a UTF-8 string from individual bytes

The above example will output:

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PHP chr() Function

The chr() function returns a character from the specified ASCII value.

The ASCII value can be specified in decimal, octal, or hex values. Octal values are defined by a leading 0, while hex values are defined by a leading 0x.

Syntax

Parameter Values

Technical Details

More Examples

Example

Using the octal value 046 to add the ASCII Character: &.

Example

Using the decimal values 43 and 61 to add the ASCII Characters: + and =.

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chr() function in PHP

The chr() function returns the specific characters. It converts an ASCII value to a character.

Syntax

Parameters

Return

The chr() function returns the character of the ASCII value passed.

The following is an example −

Example

The following is the output −

Output

Let us see another example −

Example

The following is the output −

Output

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