sanitize_email( string $email )
删除电子邮件中不允许的所有字符。
Strips out all characters that are not allowable in an email.
目录锚点:#参数#返回#源码#笔记
参数 | 类型 | 必填 | 说明 |
$email |
(string) |
必需 |
要筛选的电子邮件地址。 |
(string)筛选的电子邮件地址。
/**
* Strips out all characters that are not allowable in an email.
*
* @since 1.5.0
*
* @param string $email Email address to filter.
* @return string Filtered email address.
*/
function sanitize_email( $email ) {
// Test for the minimum length the email can be
if ( strlen( $email ) < 3="" )="" {="" *="" *="" filter="" a="" sanitized="" email="" address.="" *="" *="" this="" filter="" is="" evaluated="" under="" several="" contexts,="" including="" 'email_too_short',="" *="" 'email_no_at',="" 'local_invalid_chars',="" 'domain_period_sequence',="" 'domain_period_limits',="" *="" 'domain_no_periods',="" 'domain_no_valid_subs',="" or="" no="" context.="" *="" *="" @since="" 2.8.0="" *="" *="" @param="" string="" $email="" the="" sanitized="" email="" address.="" *="" @param="" string="" $email="" the="" email="" address,="" as="" provided="" to="" sanitize_email().="" *="" @param="" string="" $message="" a="" message="" to="" pass="" to="" the="" user.="" */="" 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,="" "="" 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, "
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 );
}
更新版本 |
源码位置 |
使用 |
被使用 |
1.5.0 |
wp-includes/formatting.php:3603 |
4 |
2 |
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