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Speed up wp_specialchars, props sambauers, see #8767 

git-svn-id: https://develop.svn.wordpress.org/trunk@10355 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Ozz 2009-01-13 15:18:37 +00:00
parent 6912126d8f
commit 926adb5bcb
1 changed files with 37 additions and 6 deletions
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41
wp-includes/formatting.php
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@ -207,9 +207,19 @@ function wp_specialchars( $string, $quote_style = ENT_NOQUOTES, $charset = false
return '';
}
// Don't bother if there are no specialchars - saves some processing
if ( !preg_match( '/[&<>"\']/', $string ) ) {
return $string;
}
// Store the site charset as a static to avoid multiple calls to wp_load_alloptions()
if ( !$charset ) {
static $_charset;
if ( !isset( $_charset ) ) {
$alloptions = wp_load_alloptions();
$charset = isset( $alloptions['blog_charset'] ) ? $alloptions['blog_charset'] : '';
$_charset = isset( $alloptions['blog_charset'] ) ? $alloptions['blog_charset'] : '';
}
$charset = $_charset;
}
if ( in_array( $charset, array( 'utf8', 'utf-8', 'UTF8' ) ) ) {
$charset = 'UTF-8';
@ -283,6 +293,11 @@ function wp_specialchars_decode( $string, $quote_style = ENT_NOQUOTES )
return '';
}
// Don't bother if there are no entities - saves a lot of processing
if ( strpos( $string, '&' ) === false ) {
return $string;
}
// More complete than get_html_translation_table( HTML_SPECIALCHARS )
$single = array( '&#039;' => '\'', '&#x27;' => '\'' );
$single_preg = array( '/&#0*39;/' => '&#039;', '/&#x0*27;/i' => '&#x27;' );
@ -340,20 +355,36 @@ function wp_check_invalid_utf8( $string, $strip = false )
return '';
}
if ( !in_array( get_option( 'blog_charset' ), array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) ) ) {
// Store the site charset as a static to avoid multiple calls to get_option()
static $is_utf8;
if ( !isset( $is_utf8 ) ) {
$is_utf8 = in_array( get_option( 'blog_charset' ), array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) );
}
if ( !$is_utf8 ) {
return $string;
}
// Check for support for utf8 in the installed PCRE library once and store the result in a static
static $utf8_pcre;
if ( !isset( $utf8_pcre ) ) {
$utf8_pcre = @preg_match( '/^./u', 'a' );
}
// We can't demand utf8 in the PCRE installation, so just return the string in those cases
if ( !$utf8_pcre ) {
return $string;
}
// preg_match fails when it encounters invalid UTF8 in $string
if ( 1 === @preg_match( '@^.@us', $string ) ) {
if ( 1 === @preg_match( '/^./us', $string ) ) {
return $string;
}
// Attempt to strip the bad chars if requested (not recommended)
if ( $strip && function_exists( 'iconv' ) ) {
return iconv( 'utf-8', 'utf-8', $string );
} else {
return '';
}
return '';
}
/**