我使用这些代码将CSV内容导入MySQL数据库。
<?php
$databasehost = "localhost";
$databasename = "test";
$databasetable = "sample";
$databaseusername ="test";
$databasepassword = "";
$fieldseparator = ",";
$lineseparator = "'n";
$csvfile = "filename.csv";
$addauto = 0;
$save = 1;
$outputfile = "output.sql";
if(!file_exists($csvfile)) {
echo "File not found. Make sure you specified the correct path.'n";
exit;
}
$file = fopen($csvfile,"r");
if(!$file) {
echo "Error opening data file.'n";
exit;
}
$size = filesize($csvfile);
if(!$size) {
echo "File is empty.'n";
exit;
}
$csvcontent = fread($file,$size);
fclose($file);
$con = @mysql_connect($databasehost,$databaseusername,$databasepassword) or die(mysql_error());
@mysql_select_db($databasename) or die(mysql_error());
$lines = 0;
$queries = "";
$linearray = array();
foreach(split($lineseparator,$csvcontent) as $line) {
$lines++;
$line = trim($line," 't");
$line = str_replace("'r","",$line);
$line = str_replace("'","''",$line);
$linearray = explode($fieldseparator,$line);
$linemysql = implode("','",$linearray);
if($addauto)
$query = "insert into $databasetable values('','$linemysql');";
else
$query = "insert into $databasetable values('$linemysql');";
$queries .= $query . "'n";
@mysql_query($query);
}
@mysql_close($con);
if($save) {
if(!is_writable($outputfile)) {
echo "File is not writable, check permissions.'n";
}
else {
$file2 = fopen($outputfile,"w");
if(!$file2) {
echo "Error writing to the output file.'n";
}
else {
fwrite($file2,$queries);
fclose($file2);
}
}
}
echo "Found a total of $lines records in this csv file.'n";
?>
但我希望对csv文件中的一些字段进行验证
例如，第二个字段是一封电子邮件，我希望检查字符串是否包含"@"
我可以知道如何/在哪里添加此类验证的代码吗？
提前感谢！
您可以使用正则表达式：
$lines++;
$line = trim($line," 't");
$line = str_replace("'r","",$line);
$line = str_replace("'","''",$line);
$linearray = explode($fieldseparator,$line);
//add code for checking email string
if (preg_match("/'w+([-+.]'w+)*@'w+([-.]'w+)*'.'w+([-.]'w+)*/", $linearray[1]) === 0) {
//not a email string
conitnue;
}
$linemysql = implode("','",$linearray);
使用内置函数fgetcsv()、filter_var()和MySQL函数LOAD DATA:
$handle = fopen("test.csv", "r");
$continue = true;
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE && $continue) {
// check for valid email (presuming it's in column 1)
$continue = filter_var($data[0], FILTER_VALIDATE_EMAIL);
}
fclose($handle);
if($continue){
// using LOAD DATA will be a lot quicker than individual queries!
$query = "LOAD DATA INFILE '/full/path/to/test.csv'";
}