Use this ICM calculator to convert tournament chip stacks into real-money equity based on payout structures, remaining players, and chip stacks. The Independent Chip Model (ICM) helps poker players make mathematically optimal decisions in high-pressure situations like the bubble and final table.
Calculate tournament equity instantly
Adjust for stack sizes and payout structure
Improve shove, call, and fold decisions
What is ICM in Poker?
The Independent Chip Model (ICM) is a mathematical model used in poker tournaments to estimate a player’s share of the prize pool based on their chip stack relative to other players.
Unlike cash games, tournament chips do not have a linear value. This means doubling your stack does not double your expected winnings. ICM accounts for this by factoring in payout structures and the probability of finishing in each position.
How This ICM Calculator Works
This calculator converts chip stacks into Expected Value (EV) by simulating how often each player finishes in each payout position.
To use it effectively, input:
Each player’s chip stack
The tournament payout structure
The calculator then outputs each player’s equity as a percentage of the total prize pool.
When Should You Use ICM?
ICM is most important in high-leverage tournament situations, including:
The bubble - when one player remains before payouts begin
Final tables - where payout jumps are significant
Short-handed play - where each decision has larger impact
In these spots, correct ICM decisions can dramatically increase your long-term tournament ROI.
ICM Strategy Tips
Understanding ICM leads to better strategic adjustments:
Play tighter when calling all-ins near the bubble
Apply pressure as a big stack against medium stacks
Avoid marginal spots when survival has significant value
Recognize payout jumps before making aggressive plays
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Current File : /opt/bitnami/apps/wordpress/wp-includes/class-wp-http-encoding.php
<?php
/**
* HTTP API: WP_Http_Encoding class
*
* @package WordPress
* @subpackage HTTP
* @since 4.4.0
*/
/**
* Core class used to implement deflate and gzip transfer encoding support for HTTP requests.
*
* Includes RFC 1950, RFC 1951, and RFC 1952.
*
* @since 2.8.0
*/
#[AllowDynamicProperties]
class WP_Http_Encoding {
/**
* Compress raw string using the deflate format.
*
* Supports the RFC 1951 standard.
*
* @since 2.8.0
*
* @param string $raw String to compress.
* @param int $level Optional. Compression level, 9 is highest. Default 9.
* @param string $supports Optional, not used. When implemented it will choose
* the right compression based on what the server supports.
* @return string|false Compressed string on success, false on failure.
*/
public static function compress( $raw, $level = 9, $supports = null ) {
return gzdeflate( $raw, $level );
}
/**
* Decompression of deflated string.
*
* Will attempt to decompress using the RFC 1950 standard, and if that fails
* then the RFC 1951 standard deflate will be attempted. Finally, the RFC
* 1952 standard gzip decode will be attempted. If all fail, then the
* original compressed string will be returned.
*
* @since 2.8.0
*
* @param string $compressed String to decompress.
* @param int $length The optional length of the compressed data.
* @return string|false Decompressed string on success, false on failure.
*/
public static function decompress( $compressed, $length = null ) {
if ( empty( $compressed ) ) {
return $compressed;
}
$decompressed = @gzinflate( $compressed );
if ( false !== $decompressed ) {
return $decompressed;
}
$decompressed = self::compatible_gzinflate( $compressed );
if ( false !== $decompressed ) {
return $decompressed;
}
$decompressed = @gzuncompress( $compressed );
if ( false !== $decompressed ) {
return $decompressed;
}
if ( function_exists( 'gzdecode' ) ) {
$decompressed = @gzdecode( $compressed );
if ( false !== $decompressed ) {
return $decompressed;
}
}
return $compressed;
}
/**
* Decompression of deflated string while staying compatible with the majority of servers.
*
* Certain Servers will return deflated data with headers which PHP's gzinflate()
* function cannot handle out of the box. The following function has been created from
* various snippets on the gzinflate() PHP documentation.
*
* Warning: Magic numbers within. Due to the potential different formats that the compressed
* data may be returned in, some "magic offsets" are needed to ensure proper decompression
* takes place. For a simple pragmatic way to determine the magic offset in use, see:
* https://core.trac.wordpress.org/ticket/18273
*
* @since 2.8.1
*
* @link https://core.trac.wordpress.org/ticket/18273
* @link https://www.php.net/manual/en/function.gzinflate.php#70875
* @link https://www.php.net/manual/en/function.gzinflate.php#77336
*
* @param string $gz_data String to decompress.
* @return string|false Decompressed string on success, false on failure.
*/
public static function compatible_gzinflate( $gz_data ) {
// Compressed data might contain a full header, if so strip it for gzinflate().
if ( str_starts_with( $gz_data, "\x1f\x8b\x08" ) ) {
$i = 10;
$flg = ord( substr( $gz_data, 3, 1 ) );
if ( $flg > 0 ) {
if ( $flg & 4 ) {
list($xlen) = unpack( 'v', substr( $gz_data, $i, 2 ) );
$i = $i + 2 + $xlen;
}
if ( $flg & 8 ) {
$i = strpos( $gz_data, "\0", $i ) + 1;
}
if ( $flg & 16 ) {
$i = strpos( $gz_data, "\0", $i ) + 1;
}
if ( $flg & 2 ) {
$i = $i + 2;
}
}
$decompressed = @gzinflate( substr( $gz_data, $i, -8 ) );
if ( false !== $decompressed ) {
return $decompressed;
}
}
// Compressed data from java.util.zip.Deflater amongst others.
$decompressed = @gzinflate( substr( $gz_data, 2 ) );
if ( false !== $decompressed ) {
return $decompressed;
}
return false;
}
/**
* What encoding types to accept and their priority values.
*
* @since 2.8.0
*
* @param string $url
* @param array $args
* @return string Types of encoding to accept.
*/
public static function accept_encoding( $url, $args ) {
$type = array();
$compression_enabled = self::is_available();
if ( ! $args['decompress'] ) { // Decompression specifically disabled.
$compression_enabled = false;
} elseif ( $args['stream'] ) { // Disable when streaming to file.
$compression_enabled = false;
} elseif ( isset( $args['limit_response_size'] ) ) { // If only partial content is being requested, we won't be able to decompress it.
$compression_enabled = false;
}
if ( $compression_enabled ) {
if ( function_exists( 'gzinflate' ) ) {
$type[] = 'deflate;q=1.0';
}
if ( function_exists( 'gzuncompress' ) ) {
$type[] = 'compress;q=0.5';
}
if ( function_exists( 'gzdecode' ) ) {
$type[] = 'gzip;q=0.5';
}
}
/**
* Filters the allowed encoding types.
*
* @since 3.6.0
*
* @param string[] $type Array of what encoding types to accept and their priority values.
* @param string $url URL of the HTTP request.
* @param array $args HTTP request arguments.
*/
$type = apply_filters( 'wp_http_accept_encoding', $type, $url, $args );
return implode( ', ', $type );
}
/**
* What encoding the content used when it was compressed to send in the headers.
*
* @since 2.8.0
*
* @return string Content-Encoding string to send in the header.
*/
public static function content_encoding() {
return 'deflate';
}
/**
* Whether the content be decoded based on the headers.
*
* @since 2.8.0
*
* @param array|string $headers All of the available headers.
* @return bool
*/
public static function should_decode( $headers ) {
if ( is_array( $headers ) ) {
if ( array_key_exists( 'content-encoding', $headers ) && ! empty( $headers['content-encoding'] ) ) {
return true;
}
} elseif ( is_string( $headers ) ) {
return ( stripos( $headers, 'content-encoding:' ) !== false );
}
return false;
}
/**
* Whether decompression and compression are supported by the PHP version.
*
* Each function is tested instead of checking for the zlib extension, to
* ensure that the functions all exist in the PHP version and aren't
* disabled.
*
* @since 2.8.0
*
* @return bool
*/
public static function is_available() {
return ( function_exists( 'gzuncompress' ) || function_exists( 'gzdeflate' ) || function_exists( 'gzinflate' ) );
}
}
