WordPressを読む　25-9 /blog/wp-includes/formatting.php 9

2014/11/29 2014/12/10

1 /blog/wp-includes/formatting.php 9
2 関数　is_email()
3 関数　wp_iso_descrambler()
4 関数　 _wp_iso_convert()
5 関数　get_gmt_from_date()
6 関数　get_date_from_gmt()
7 関数　iso8601_timezone_to_offset()
8 関数　iso8601_to_datetime()
9 関数　popuplinks()
10 関数　sanitize_email()
11 関数　human_time_diff()
12 関数　wp_trim_excerpt()
13 関数　wp_trim_words()

/blog/wp-includes/formatting.php 9

関数　is_email()

function is_email( $email, $deprecated = false ) {
	if ( ! empty( $deprecated ) )
		_deprecated_argument( __FUNCTION__, '3.0' );

	// Test for the minimum length the email can be
	if ( strlen( $email ) < 3 ) {
		return apply_filters( 'is_email', false, $email, 'email_too_short' );
	}

	// Test for an @ character after the first position
	if ( strpos( $email, '@', 1 ) === false ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'is_email', false, $email, 'email_no_at' );
	}

	// Split out the local and domain parts
	list( $local, $domain ) = explode( '@', $email, 2 );

	// LOCAL PART
	// Test for invalid characters
	if ( !preg_match( '/^[a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]+$/', $local ) ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'is_email', false, $email, 'local_invalid_chars' );
	}

	// DOMAIN PART
	// Test for sequences of periods
	if ( preg_match( '/\.{2,}/', $domain ) ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'is_email', false, $email, 'domain_period_sequence' );
	}

	// Test for leading and trailing periods and whitespace
	if ( trim( $domain, " \t\n\r\0\x0B." ) !== $domain ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'is_email', false, $email, 'domain_period_limits' );
	}

	// Split the domain into subs
	$subs = explode( '.', $domain );

	// Assume the domain will have at least two subs
	if ( 2 > count( $subs ) ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'is_email', false, $email, 'domain_no_periods' );
	}

	// Loop through each sub
	foreach ( $subs as $sub ) {
		// Test for leading and trailing hyphens and whitespace
		if ( trim( $sub, " \t\n\r\0\x0B-" ) !== $sub ) {
			/** This filter is documented in wp-includes/formatting.php */
			return apply_filters( 'is_email', false, $email, 'sub_hyphen_limits' );
		}

		// Test for invalid characters
		if ( !preg_match('/^[a-z0-9-]+$/i', $sub ) ) {
			/** This filter is documented in wp-includes/formatting.php */
			return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' );
		}
	}

	// Congratulations your email made it!
	/** This filter is documented in wp-includes/formatting.php */
	return apply_filters( 'is_email', $email, $email, null );
}

function is_email( $email, $deprecated = false ) {

if ( ! empty( $deprecated ) )

_deprecated_argument( __FUNCTION__, '3.0' );

// Test for the minimum length the email can be

if ( strlen( $email ) < 3 ) {

return apply_filters( 'is_email', false, $email, 'email_too_short' );

}

// Test for an @ character after the first position

if ( strpos( $email, '@', 1 ) === false ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'email_no_at' );

}

// Split out the local and domain parts

list( $local, $domain ) = explode( '@', $email, 2 );

// LOCAL PART

// Test for invalid characters

if ( !preg_match( '/^[a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]+$/', $local ) ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'local_invalid_chars' );

}

// DOMAIN PART

// Test for sequences of periods

if ( preg_match( '/\.{2,}/', $domain ) ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'domain_period_sequence' );

}

// Test for leading and trailing periods and whitespace

if ( trim( $domain, " \t\n\r\0\x0B." ) !== $domain ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'domain_period_limits' );

}

// Split the domain into subs

$subs = explode( '.', $domain );

// Assume the domain will have at least two subs

if ( 2 > count( $subs ) ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'domain_no_periods' );

}

// Loop through each sub

foreach ( $subs as $sub ) {

// Test for leading and trailing hyphens and whitespace

if ( trim( $sub, " \t\n\r\0\x0B-" ) !== $sub ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'sub_hyphen_limits' );

}

// Test for invalid characters

if ( !preg_match('/^[a-z0-9-]+$/i', $sub ) ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' );

}

// Congratulations your email made it!

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'is_email', $email, $email, null );

}

関数　wp_iso_descrambler()

function wp_iso_descrambler($string) {
	/* this may only work with iso-8859-1, I'm afraid */
	if (!preg_match('#\=\?(.+)\?Q\?(.+)\?\=#i', $string, $matches)) {
		return $string;
	} else {
		$subject = str_replace('_', ' ', $matches[2]);
		$subject = preg_replace_callback('#\=([0-9a-f]{2})#i', '_wp_iso_convert', $subject);
		return $subject;
	}
}

function wp_iso_descrambler($string) {

/* this may only work with iso-8859-1, I'm afraid */

if (!preg_match('#\=\?(.+)\?Q\?(.+)\?\=#i', $string, $matches)) {

return $string;

} else {

$subject = str_replace('_', ' ', $matches[2]);

$subject = preg_replace_callback('#\=([0-9a-f]{2})#i', '_wp_iso_convert', $subject);

return $subject;

}

関数　 _wp_iso_convert()

function _wp_iso_convert( $match ) {
	return chr( hexdec( strtolower( $match[1] ) ) );
}

function _wp_iso_convert( $match ) {

return chr( hexdec( strtolower( $match[1] ) ) );

}

関数　get_gmt_from_date()

function get_gmt_from_date( $string, $format = 'Y-m-d H:i:s' ) {
	$tz = get_option( 'timezone_string' );
	if ( $tz ) {
		$datetime = date_create( $string, new DateTimeZone( $tz ) );
		if ( ! $datetime )
			return gmdate( $format, 0 );
		$datetime->setTimezone( new DateTimeZone( 'UTC' ) );
		$string_gmt = $datetime->format( $format );
	} else {
		if ( ! preg_match( '#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches ) )
			return gmdate( $format, 0 );
		$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] );
		$string_gmt = gmdate( $format, $string_time - get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
	}
	return $string_gmt;
}

function get_gmt_from_date( $string, $format = 'Y-m-d H:i:s' ) {

$tz = get_option( 'timezone_string' );

if ( $tz ) {

$datetime = date_create( $string, new DateTimeZone( $tz ) );

if ( ! $datetime )

return gmdate( $format, 0 );

$datetime->setTimezone( new DateTimeZone( 'UTC' ) );

$string_gmt = $datetime->format( $format );

} else {

if ( ! preg_match( '#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches ) )

return gmdate( $format, 0 );

$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] );

$string_gmt = gmdate( $format, $string_time - get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );

}

return $string_gmt;

}

関数　get_date_from_gmt()

function get_date_from_gmt( $string, $format = 'Y-m-d H:i:s' ) {
	$tz = get_option( 'timezone_string' );
	if ( $tz ) {
		$datetime = date_create( $string, new DateTimeZone( 'UTC' ) );
		if ( ! $datetime )
			return date( $format, 0 );
		$datetime->setTimezone( new DateTimeZone( $tz ) );
		$string_localtime = $datetime->format( $format );
	} else {
		if ( ! preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches) )
			return date( $format, 0 );
		$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] );
		$string_localtime = gmdate( $format, $string_time + get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
	}
	return $string_localtime;
}

function get_date_from_gmt( $string, $format = 'Y-m-d H:i:s' ) {

$tz = get_option( 'timezone_string' );

if ( $tz ) {

$datetime = date_create( $string, new DateTimeZone( 'UTC' ) );

if ( ! $datetime )

return date( $format, 0 );

$datetime->setTimezone( new DateTimeZone( $tz ) );

$string_localtime = $datetime->format( $format );

} else {

if ( ! preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches) )

return date( $format, 0 );

$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] );

$string_localtime = gmdate( $format, $string_time + get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );

}

return $string_localtime;

}

関数　iso8601_timezone_to_offset()

function iso8601_timezone_to_offset($timezone) {
	// $timezone is either 'Z' or '[+|-]hhmm'
	if ($timezone == 'Z') {
		$offset = 0;
	} else {
		$sign    = (substr($timezone, 0, 1) == '+') ? 1 : -1;
		$hours   = intval(substr($timezone, 1, 2));
		$minutes = intval(substr($timezone, 3, 4)) / 60;
		$offset  = $sign * HOUR_IN_SECONDS * ($hours + $minutes);
	}
	return $offset;
}

function iso8601_timezone_to_offset($timezone) {

// $timezone is either 'Z' or '[+|-]hhmm'

if ($timezone == 'Z') {

$offset = 0;

} else {

$sign = (substr($timezone, 0, 1) == '+') ? 1 : -1;

$hours = intval(substr($timezone, 1, 2));

$minutes = intval(substr($timezone, 3, 4)) / 60;

$offset = $sign * HOUR_IN_SECONDS * ($hours + $minutes);

}

return $offset;

}

関数　iso8601_to_datetime()

function iso8601_to_datetime($date_string, $timezone = 'user') {
	$timezone = strtolower($timezone);

	if ($timezone == 'gmt') {

		preg_match('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', $date_string, $date_bits);

		if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset
			$offset = iso8601_timezone_to_offset($date_bits[7]);
		} else { // we don't have a timezone, so we assume user local timezone (not server's!)
			$offset = HOUR_IN_SECONDS * get_option('gmt_offset');
		}

		$timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]);
		$timestamp -= $offset;

		return gmdate('Y-m-d H:i:s', $timestamp);

	} else if ($timezone == 'user') {
		return preg_replace('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', '$1-$2-$3 $4:$5:$6', $date_string);
	}
}

function iso8601_to_datetime($date_string, $timezone = 'user') {

$timezone = strtolower($timezone);

if ($timezone == 'gmt') {

preg_match('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', $date_string, $date_bits);

if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset

$offset = iso8601_timezone_to_offset($date_bits[7]);

} else { // we don't have a timezone, so we assume user local timezone (not server's!)

$offset = HOUR_IN_SECONDS * get_option('gmt_offset');

}

$timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]);

$timestamp -= $offset;

return gmdate('Y-m-d H:i:s', $timestamp);

} else if ($timezone == 'user') {

return preg_replace('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', '$1-$2-$3 $4:$5:$6', $date_string);

}

関数　popuplinks()

function popuplinks($text) {
	$text = preg_replace('/<a (.+?)>/i', "<a $1 target='_blank' rel='external'>", $text);
	return $text;
}

function popuplinks($text) {

$text = preg_replace('/<a (.+?)>/i', "<a $1 target='_blank' rel='external'>", $text);

return $text;

}

関数　sanitize_email()

function sanitize_email( $email ) {
	// Test for the minimum length the email can be
	if ( strlen( $email ) < 3 ) {
		return apply_filters( 'sanitize_email', '', $email, 'email_too_short' );
	}

	// Test for an @ character after the first position
	if ( strpos( $email, '@', 1 ) === false ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'sanitize_email', '', $email, 'email_no_at' );
	}

	// Split out the local and domain parts
	list( $local, $domain ) = explode( '@', $email, 2 );

	// LOCAL PART
	// Test for invalid characters
	$local = preg_replace( '/[^a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]/', '', $local );
	if ( '' === $local ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'sanitize_email', '', $email, 'local_invalid_chars' );
	}

	// DOMAIN PART
	// Test for sequences of periods
	$domain = preg_replace( '/\.{2,}/', '', $domain );
	if ( '' === $domain ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'sanitize_email', '', $email, 'domain_period_sequence' );
	}

	// Test for leading and trailing periods and whitespace
	$domain = trim( $domain, " \t\n\r\0\x0B." );
	if ( '' === $domain ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'sanitize_email', '', $email, 'domain_period_limits' );
	}

	// Split the domain into subs
	$subs = explode( '.', $domain );

	// Assume the domain will have at least two subs
	if ( 2 > count( $subs ) ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'sanitize_email', '', $email, 'domain_no_periods' );
	}

	// Create an array that will contain valid subs
	$new_subs = array();

	// Loop through each sub
	foreach ( $subs as $sub ) {
		// Test for leading and trailing hyphens
		$sub = trim( $sub, " \t\n\r\0\x0B-" );

		// Test for invalid characters
		$sub = preg_replace( '/[^a-z0-9-]+/i', '', $sub );

		// If there's anything left, add it to the valid subs
		if ( '' !== $sub ) {
			$new_subs[] = $sub;
		}
	}

	// If there aren't 2 or more valid subs
	if ( 2 > count( $new_subs ) ) {
		/** This filter is documented in wp-includes/formatting.php */
		return apply_filters( 'sanitize_email', '', $email, 'domain_no_valid_subs' );
	}

	// Join valid subs into the new domain
	$domain = join( '.', $new_subs );

	// Put the email back together
	$email = $local . '@' . $domain;

	// Congratulations your email made it!
	/** This filter is documented in wp-includes/formatting.php */
	return apply_filters( 'sanitize_email', $email, $email, null );
}

function sanitize_email( $email ) {

// Test for the minimum length the email can be

if ( strlen( $email ) < 3 ) {

return apply_filters( 'sanitize_email', '', $email, 'email_too_short' );

}

// Test for an @ character after the first position

if ( strpos( $email, '@', 1 ) === false ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', '', $email, 'email_no_at' );

}

// Split out the local and domain parts

list( $local, $domain ) = explode( '@', $email, 2 );

// LOCAL PART

// Test for invalid characters

$local = preg_replace( '/[^a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]/', '', $local );

if ( '' === $local ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', '', $email, 'local_invalid_chars' );

}

// DOMAIN PART

// Test for sequences of periods

$domain = preg_replace( '/\.{2,}/', '', $domain );

if ( '' === $domain ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', '', $email, 'domain_period_sequence' );

}

// Test for leading and trailing periods and whitespace

$domain = trim( $domain, " \t\n\r\0\x0B." );

if ( '' === $domain ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', '', $email, 'domain_period_limits' );

}

// Split the domain into subs

$subs = explode( '.', $domain );

// Assume the domain will have at least two subs

if ( 2 > count( $subs ) ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', '', $email, 'domain_no_periods' );

}

// Create an array that will contain valid subs

$new_subs = array();

// Loop through each sub

foreach ( $subs as $sub ) {

// Test for leading and trailing hyphens

$sub = trim( $sub, " \t\n\r\0\x0B-" );

// Test for invalid characters

$sub = preg_replace( '/[^a-z0-9-]+/i', '', $sub );

// If there's anything left, add it to the valid subs

if ( '' !== $sub ) {

$new_subs[] = $sub;

}

// If there aren't 2 or more valid subs

if ( 2 > count( $new_subs ) ) {

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', '', $email, 'domain_no_valid_subs' );

}

// Join valid subs into the new domain

$domain = join( '.', $new_subs );

// Put the email back together

$email = $local . '@' . $domain;

// Congratulations your email made it!

/** This filter is documented in wp-includes/formatting.php */

return apply_filters( 'sanitize_email', $email, $email, null );

}

関数　human_time_diff()

function human_time_diff( $from, $to = '' ) {
	if ( empty( $to ) ) {
		$to = time();
	}

	$diff = (int) abs( $to - $from );

	if ( $diff < HOUR_IN_SECONDS ) {
		$mins = round( $diff / MINUTE_IN_SECONDS );
		if ( $mins <= 1 )
			$mins = 1;
		/* translators: min=minute */
		$since = sprintf( _n( '%s min', '%s mins', $mins ), $mins );
	} elseif ( $diff < DAY_IN_SECONDS && $diff >= HOUR_IN_SECONDS ) {
		$hours = round( $diff / HOUR_IN_SECONDS );
		if ( $hours <= 1 )
			$hours = 1;
		$since = sprintf( _n( '%s hour', '%s hours', $hours ), $hours );
	} elseif ( $diff < WEEK_IN_SECONDS && $diff >= DAY_IN_SECONDS ) {
		$days = round( $diff / DAY_IN_SECONDS );
		if ( $days <= 1 )
			$days = 1;
		$since = sprintf( _n( '%s day', '%s days', $days ), $days );
	} elseif ( $diff < 30 * DAY_IN_SECONDS && $diff >= WEEK_IN_SECONDS ) {
		$weeks = round( $diff / WEEK_IN_SECONDS );
		if ( $weeks <= 1 )
			$weeks = 1;
		$since = sprintf( _n( '%s week', '%s weeks', $weeks ), $weeks );
	} elseif ( $diff < YEAR_IN_SECONDS && $diff >= 30 * DAY_IN_SECONDS ) {
		$months = round( $diff / ( 30 * DAY_IN_SECONDS ) );
		if ( $months <= 1 )
			$months = 1;
		$since = sprintf( _n( '%s month', '%s months', $months ), $months );
	} elseif ( $diff >= YEAR_IN_SECONDS ) {
		$years = round( $diff / YEAR_IN_SECONDS );
		if ( $years <= 1 )
			$years = 1;
		$since = sprintf( _n( '%s year', '%s years', $years ), $years );
	}
	return apply_filters( 'human_time_diff', $since, $diff, $from, $to );
}

function human_time_diff( $from, $to = '' ) {

if ( empty( $to ) ) {

$to = time();

}

$diff = (int) abs( $to - $from );

if ( $diff < HOUR_IN_SECONDS ) {

$mins = round( $diff / MINUTE_IN_SECONDS );

if ( $mins <= 1 )

$mins = 1;

/* translators: min=minute */

$since = sprintf( _n( '%s min', '%s mins', $mins ), $mins );

} elseif ( $diff < DAY_IN_SECONDS && $diff >= HOUR_IN_SECONDS ) {

$hours = round( $diff / HOUR_IN_SECONDS );

if ( $hours <= 1 )

$hours = 1;

$since = sprintf( _n( '%s hour', '%s hours', $hours ), $hours );

} elseif ( $diff < WEEK_IN_SECONDS && $diff >= DAY_IN_SECONDS ) {

$days = round( $diff / DAY_IN_SECONDS );

if ( $days <= 1 )

$days = 1;

$since = sprintf( _n( '%s day', '%s days', $days ), $days );

} elseif ( $diff < 30 * DAY_IN_SECONDS && $diff >= WEEK_IN_SECONDS ) {

$weeks = round( $diff / WEEK_IN_SECONDS );

if ( $weeks <= 1 )

$weeks = 1;

$since = sprintf( _n( '%s week', '%s weeks', $weeks ), $weeks );

} elseif ( $diff < YEAR_IN_SECONDS && $diff >= 30 * DAY_IN_SECONDS ) {

$months = round( $diff / ( 30 * DAY_IN_SECONDS ) );

if ( $months <= 1 )

$months = 1;

$since = sprintf( _n( '%s month', '%s months', $months ), $months );

} elseif ( $diff >= YEAR_IN_SECONDS ) {

$years = round( $diff / YEAR_IN_SECONDS );

if ( $years <= 1 )

$years = 1;

$since = sprintf( _n( '%s year', '%s years', $years ), $years );

}

return apply_filters( 'human_time_diff', $since, $diff, $from, $to );

}

関数　wp_trim_excerpt()

function wp_trim_excerpt($text = '') {
	$raw_excerpt = $text;
	if ( '' == $text ) {
		$text = get_the_content('');

		$text = strip_shortcodes( $text );

		/** This filter is documented in wp-includes/post-template.php */
		$text = apply_filters( 'the_content', $text );
		$text = str_replace(']]>', ']]&gt;', $text);

		$excerpt_length = apply_filters( 'excerpt_length', 55 );
		$excerpt_more = apply_filters( 'excerpt_more', ' ' . '[&hellip;]' );
		$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );
	}
	return apply_filters( 'wp_trim_excerpt', $text, $raw_excerpt );
}

function wp_trim_excerpt($text = '') {

$raw_excerpt = $text;

if ( '' == $text ) {

$text = get_the_content('');

$text = strip_shortcodes( $text );

/** This filter is documented in wp-includes/post-template.php */

$text = apply_filters( 'the_content', $text );

$text = str_replace(']]>', ']]>', $text);

$excerpt_length = apply_filters( 'excerpt_length', 55 );

$excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' );

$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );

}

return apply_filters( 'wp_trim_excerpt', $text, $raw_excerpt );

}

関数　wp_trim_words()

function wp_trim_words( $text, $num_words = 55, $more = null ) {
	if ( null === $more )
		$more = __( '&hellip;' );
	$original_text = $text;
	$text = wp_strip_all_tags( $text );
	/* translators: If your word count is based on single characters (East Asian characters),
	   enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */
	if ( 'characters' == _x( 'words', 'word count: words or characters?' ) && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) {
		$text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $text ), ' ' );
		preg_match_all( '/./u', $text, $words_array );
		$words_array = array_slice( $words_array[0], 0, $num_words + 1 );
		$sep = '';
	} else {
		$words_array = preg_split( "/[\n\r\t ]+/", $text, $num_words + 1, PREG_SPLIT_NO_EMPTY );
		$sep = ' ';
	}
	if ( count( $words_array ) > $num_words ) {
		array_pop( $words_array );
		$text = implode( $sep, $words_array );
		$text = $text . $more;
	} else {
		$text = implode( $sep, $words_array );
	}
	return apply_filters( 'wp_trim_words', $text, $num_words, $more, $original_text );
}

function wp_trim_words( $text, $num_words = 55, $more = null ) {

if ( null === $more )

$more = __( '…' );

$original_text = $text;

$text = wp_strip_all_tags( $text );

/* translators: If your word count is based on single characters (East Asian characters),

enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */

if ( 'characters' == _x( 'words', 'word count: words or characters?' ) && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) {

$text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $text ), ' ' );

preg_match_all( '/./u', $text, $words_array );

$words_array = array_slice( $words_array[0], 0, $num_words + 1 );

$sep = '';

} else {

$words_array = preg_split( "/[\n\r\t ]+/", $text, $num_words + 1, PREG_SPLIT_NO_EMPTY );

$sep = ' ';

}

if ( count( $words_array ) > $num_words ) {

array_pop( $words_array );

$text = implode( $sep, $words_array );

$text = $text . $more;

} else {

$text = implode( $sep, $words_array );

}

return apply_filters( 'wp_trim_words', $text, $num_words, $more, $original_text );

}

- Wordpress

月	火	水	木	金	土	日
« 4月
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

WordPressを読む 25-9 /blog/wp-includes/formatting.php 9

/blog/wp-includes/formatting.php 9

WordPressを読む　25-9 /blog/wp-includes/formatting.php 9