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jon+dontspamme at phpsitesolutions dot com ¶
16 years ago
I found that the fputcsv examples for PHP 4 missed one thing, that was proper handling of the $enclosure value when it is a quote (if a quote is passed in a field, and it is delimited by a slash, it will be improperly handled by the functions submitted here).

My modified function was built using the actual PHP5 source for fputcsv, with the addition of properly reacting to the existence of a delimited quote in the field being processed.

<?php
if (!function_exists('fputcsv')) {
    function fputcsv(&$handle, $fields = array(), $delimiter = ',', $enclosure = '"') {

        // Sanity Check
        if (!is_resource($handle)) {
            trigger_error('fputcsv() expects parameter 1 to be resource, ' .
                gettype($handle) . ' given', E_USER_WARNING);
            return false;
        }

        if ($delimiter!=NULL) {
            if( strlen($delimiter) < 1 ) {
                trigger_error('delimiter must be a character', E_USER_WARNING);
                return false;
            }elseif( strlen($delimiter) > 1 ) {
                trigger_error('delimiter must be a single character', E_USER_NOTICE);
            }

            /* use first character from string */
            $delimiter = $delimiter[0];
        }

        if( $enclosure!=NULL ) {
             if( strlen($enclosure) < 1 ) {
                trigger_error('enclosure must be a character', E_USER_WARNING);
                return false;
            }elseif( strlen($enclosure) > 1 ) {
                trigger_error('enclosure must be a single character', E_USER_NOTICE);
            }

            /* use first character from string */
            $enclosure = $enclosure[0];
       }

        $i = 0;
        $csvline = '';
        $escape_char = '\\';
        $field_cnt = count($fields);
        $enc_is_quote = in_array($enclosure, array('"',"'"));
        reset($fields);

        foreach( $fields AS $field ) {

            /* enclose a field that contains a delimiter, an enclosure character, or a newline */
            if( is_string($field) && ( 
                strpos($field, $delimiter)!==false ||
                strpos($field, $enclosure)!==false ||
                strpos($field, $escape_char)!==false ||
                strpos($field, "\n")!==false ||
                strpos($field, "\r")!==false ||
                strpos($field, "\t")!==false ||
                strpos($field, ' ')!==false ) ) {

                $field_len = strlen($field);
                $escaped = 0;

                $csvline .= $enclosure;
                for( $ch = 0; $ch < $field_len; $ch++ )    {
                    if( $field[$ch] == $escape_char && $field[$ch+1] == $enclosure && $enc_is_quote ) {
                        continue;
                    }elseif( $field[$ch] == $escape_char ) {
                        $escaped = 1;
                    }elseif( !$escaped && $field[$ch] == $enclosure ) {
                        $csvline .= $enclosure;
                    }else{
                        $escaped = 0;
                    }
                    $csvline .= $field[$ch];
                }
                $csvline .= $enclosure;
            } else {
                $csvline .= $field;
            }

            if( $i++ != $field_cnt ) {
                $csvline .= $delimiter;
            }
        }

        $csvline .= "\n";

        return fwrite($handle, $csvline);
    }
}
?>
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