Conflict with another plugin

Postman: wp_mail has been declared by another plugin or theme, so you won’t be able to use Postman until the conflict is resolved.
More info that may help – /home/studyabroadxpert/public_html/wp-includes/pluggable.php:173

line 173 – 500 below.

function wp_mail( $to, $subject, $message, $headers = ”, $attachments = array() ) {
// Compact the input, apply the filters, and extract them back out

/**
* Filters the wp_mail() arguments.
*
* @since 2.2.0
*
* @param array $args A compacted array of wp_mail() arguments, including the “to” email,
* subject, message, headers, and attachments values.
*/
$atts = apply_filters( ‘wp_mail’, compact( ‘to’, ‘subject’, ‘message’, ‘headers’, ‘attachments’ ) );

if ( isset( $atts[‘to’] ) ) {
$to = $atts[‘to’];
}

if ( !is_array( $to ) ) {
$to = explode( ‘,’, $to );
}

if ( isset( $atts[‘subject’] ) ) {
$subject = $atts[‘subject’];
}

if ( isset( $atts[‘message’] ) ) {
$message = $atts[‘message’];
}

if ( isset( $atts[‘headers’] ) ) {
$headers = $atts[‘headers’];
}

if ( isset( $atts[‘attachments’] ) ) {
$attachments = $atts[‘attachments’];
}

if ( ! is_array( $attachments ) ) {
$attachments = explode( “\n”, str_replace( “\r\n”, “\n”, $attachments ) );
}
global $phpmailer;

// (Re)create it, if it’s gone missing
if ( ! ( $phpmailer instanceof PHPMailer ) ) {
require_once ABSPATH . WPINC . ‘/class-phpmailer.php’;
require_once ABSPATH . WPINC . ‘/class-smtp.php’;
$phpmailer = new PHPMailer( true );
}

// Headers
$cc = $bcc = $reply_to = array();

if ( empty( $headers ) ) {
$headers = array();
} else {
if ( !is_array( $headers ) ) {
// Explode the headers out, so this function can take both
// string headers and an array of headers.
$tempheaders = explode( “\n”, str_replace( “\r\n”, “\n”, $headers ) );
} else {
$tempheaders = $headers;
}
$headers = array();

// If it’s actually got contents
if ( !empty( $tempheaders ) ) {
// Iterate through the raw headers
foreach ( (array) $tempheaders as $header ) {
if ( strpos($header, ‘:’) === false ) {
if ( false !== stripos( $header, ‘boundary=’ ) ) {
$parts = preg_split(‘/boundary=/i’, trim( $header ) );
$boundary = trim( str_replace( array( “‘”, ‘”‘ ), ”, $parts[1] ) );
}
continue;
}
// Explode them out
list( $name, $content ) = explode( ‘:’, trim( $header ), 2 );

// Cleanup crew
$name = trim( $name );
$content = trim( $content );

switch ( strtolower( $name ) ) {
// Mainly for legacy — process a From: header if it’s there
case ‘from’:
$bracket_pos = strpos( $content, ‘<‘ );
if ( $bracket_pos !== false ) {
// Text before the bracketed email is the “From” name.
if ( $bracket_pos > 0 ) {
$from_name = substr( $content, 0, $bracket_pos – 1 );
$from_name = str_replace( ‘”‘, ”, $from_name );
$from_name = trim( $from_name );
}

$from_email = substr( $content, $bracket_pos + 1 );
$from_email = str_replace( ‘>’, ”, $from_email );
$from_email = trim( $from_email );

// Avoid setting an empty $from_email.
} elseif ( ” !== trim( $content ) ) {
$from_email = trim( $content );
}
break;
case ‘content-type’:
if ( strpos( $content, ‘;’ ) !== false ) {
list( $type, $charset_content ) = explode( ‘;’, $content );
$content_type = trim( $type );
if ( false !== stripos( $charset_content, ‘charset=’ ) ) {
$charset = trim( str_replace( array( ‘charset=’, ‘”‘ ), ”, $charset_content ) );
} elseif ( false !== stripos( $charset_content, ‘boundary=’ ) ) {
$boundary = trim( str_replace( array( ‘BOUNDARY=’, ‘boundary=’, ‘”‘ ), ”, $charset_content ) );
$charset = ”;
}

// Avoid setting an empty $content_type.
} elseif ( ” !== trim( $content ) ) {
$content_type = trim( $content );
}
break;
case ‘cc’:
$cc = array_merge( (array) $cc, explode( ‘,’, $content ) );
break;
case ‘bcc’:
$bcc = array_merge( (array) $bcc, explode( ‘,’, $content ) );
break;
case ‘reply-to’:
$reply_to = array_merge( (array) $reply_to, explode( ‘,’, $content ) );
break;
default:
// Add it to our grand headers array
$headers[trim( $name )] = trim( $content );
break;
}
}
}
}

// Empty out the values that may be set
$phpmailer->clearAllRecipients();
$phpmailer->clearAttachments();
$phpmailer->clearCustomHeaders();
$phpmailer->clearReplyTos();

// From email and name
// If we don’t have a name from the input headers
if ( !isset( $from_name ) )
$from_name = ‘WordPress’;

/* If we don’t have an email from the input headers default to wordpress@$sitename
* Some hosts will block outgoing mail from this address if it doesn’t exist but
* there’s no easy alternative. Defaulting to admin_email might appear to be another
* option but some hosts may refuse to relay mail from an unknown domain. See
* https://core.trac.ww.wp.xz.cn/ticket/5007.
*/

if ( !isset( $from_email ) ) {
// Get the site domain and get rid of www.
$sitename = strtolower( $_SERVER[‘SERVER_NAME’] );
if ( substr( $sitename, 0, 4 ) == ‘www.’ ) {
$sitename = substr( $sitename, 4 );
}

$from_email = ‘wordpress@’ . $sitename;
}

/**
* Filters the email address to send from.
*
* @since 2.2.0
*
* @param string $from_email Email address to send from.
*/
$from_email = apply_filters( ‘wp_mail_from’, $from_email );

/**
* Filters the name to associate with the “from” email address.
*
* @since 2.3.0
*
* @param string $from_name Name associated with the “from” email address.
*/
$from_name = apply_filters( ‘wp_mail_from_name’, $from_name );

try {
$phpmailer->setFrom( $from_email, $from_name, false );
} catch ( phpmailerException $e ) {
$mail_error_data = compact( ‘to’, ‘subject’, ‘message’, ‘headers’, ‘attachments’ );
$mail_error_data[‘phpmailer_exception_code’] = $e->getCode();

/** This filter is documented in wp-includes/pluggable.php */
do_action( ‘wp_mail_failed’, new WP_Error( ‘wp_mail_failed’, $e->getMessage(), $mail_error_data ) );

return false;
}

// Set mail’s subject and body
$phpmailer->Subject = $subject;
$phpmailer->Body = $message;

// Set destination addresses, using appropriate methods for handling addresses
$address_headers = compact( ‘to’, ‘cc’, ‘bcc’, ‘reply_to’ );

foreach ( $address_headers as $address_header => $addresses ) {
if ( empty( $addresses ) ) {
continue;
}

foreach ( (array) $addresses as $address ) {
try {
// Break $recipient into name and address parts if in the format “Foo <[email protected]>”
$recipient_name = ”;

if ( preg_match( ‘/(.*)<(.+)>/’, $address, $matches ) ) {
if ( count( $matches ) == 3 ) {
$recipient_name = $matches[1];
$address = $matches[2];
}
}

switch ( $address_header ) {
case ‘to’:
$phpmailer->addAddress( $address, $recipient_name );
break;
case ‘cc’:
$phpmailer->addCc( $address, $recipient_name );
break;
case ‘bcc’:
$phpmailer->addBcc( $address, $recipient_name );
break;
case ‘reply_to’:
$phpmailer->addReplyTo( $address, $recipient_name );
break;
}
} catch ( phpmailerException $e ) {
continue;
}
}
}

// Set to use PHP’s mail()
$phpmailer->isMail();

// Set Content-Type and charset
// If we don’t have a content-type from the input headers
if ( !isset( $content_type ) )
$content_type = ‘text/plain’;

/**
* Filters the wp_mail() content type.
*
* @since 2.3.0
*
* @param string $content_type Default wp_mail() content type.
*/
$content_type = apply_filters( ‘wp_mail_content_type’, $content_type );

$phpmailer->ContentType = $content_type;

// Set whether it’s plaintext, depending on $content_type
if ( ‘text/html’ == $content_type )
$phpmailer->isHTML( true );

// If we don’t have a charset from the input headers
if ( !isset( $charset ) )
$charset = get_bloginfo( ‘charset’ );

// Set the content-type and charset

/**
* Filters the default wp_mail() charset.
*
* @since 2.3.0
*
* @param string $charset Default email charset.
*/
$phpmailer->CharSet = apply_filters( ‘wp_mail_charset’, $charset );

// Set custom headers
if ( !empty( $headers ) ) {
foreach ( (array) $headers as $name => $content ) {
$phpmailer->addCustomHeader( sprintf( ‘%1$s: %2$s’, $name, $content ) );
}

if ( false !== stripos( $content_type, ‘multipart’ ) && ! empty($boundary) )
$phpmailer->addCustomHeader( sprintf( “Content-Type: %s;\n\t boundary=\”%s\””, $content_type, $boundary ) );
}

if ( !empty( $attachments ) ) {
foreach ( $attachments as $attachment ) {
try {
$phpmailer->addAttachment($attachment);
} catch ( phpmailerException $e ) {
continue;
}
}
}

/**
* Fires after PHPMailer is initialized.
*
* @since 2.2.0
*
* @param PHPMailer $phpmailer The PHPMailer instance (passed by reference).
*/
do_action_ref_array( ‘phpmailer_init’, array( &$phpmailer ) );

// Send!
try {
return $phpmailer->send();
} catch ( phpmailerException $e ) {

$mail_error_data = compact( ‘to’, ‘subject’, ‘message’, ‘headers’, ‘attachments’ );
$mail_error_data[‘phpmailer_exception_code’] = $e->getCode();

/**
* Fires after a phpmailerException is caught.
*
* @since 4.4.0
*
* @param WP_Error $error A WP_Error object with the phpmailerException message, and an array
* containing the mail recipient, subject, message, headers, and attachments.
*/
do_action( ‘wp_mail_failed’, new WP_Error( ‘wp_mail_failed’, $e->getMessage(), $mail_error_data ) );

return false;
}
}
endif;