SplFileObject::fgetcsv
(PHP 5 >= 5.1.0)
SplFileObject::fgetcsv — Gets line from file and parse as CSV fields
说明
$delimiter = ","
[, string $enclosure = "\""
[, string $escape = "\\"
]]] )Gets a line from the file which is in CSV format and returns an array containing the fields read.
参数
-
delimiter -
The field delimiter (one character only). Defaults as a comma or the value set using SplFileObject::setCsvControl() .
-
enclosure -
The field enclosure character (one character only). Defaults as a double quotation mark or the value set using SplFileObject::setCsvControl() .
-
escape -
The escape character (one character only). Defaults as a backslash (\) or the value set using SplFileObject::setCsvControl() .
返回值
Returns an indexed array containing the fields read, or FALSE on error.
Note:
A blank line in a CSV file will be returned as an array comprising a single
NULLfield unless usingSplFileObject::SKIP_EMPTY | SplFileObject::DROP_NEW_LINE, in which case empty lines are skipped.
范例
Example #1 SplFileObject::fgetcsv() example
<?php
$file = new SplFileObject ( "data.csv" );
while (! $file -> eof ()) {
var_dump ( $file -> fgetcsv ());
}
?>
Example #2 SplFileObject::READ_CSV example
<?php
$file = new SplFileObject ( "animals.csv" );
$file -> setFlags ( SplFileObject :: READ_CSV );
foreach ( $file as $row ) {
list( $animal , $class , $legs ) = $row ;
printf ( "A %s is a %s with %d legs\n" , $animal , $class , $legs );
}
?> Contents of animals.csv
crocodile,reptile,4 dolphin,mammal,0 duck,bird,2 koala,mammal,4 salmon,fish,0
以上例程的输出类似于：
A crocodile is a reptile with 4 legs A dolphin is a mammal with 0 legs A duck is a bird with 2 legs A koala is a mammal with 4 legs A salmon is a fish with 0 legs
参见
- SplFileObject::setCsvControl() - Set the delimiter and enclosure character for CSV
- SplFileObject::setFlags() - Sets flags for the SplFileObject
- SplFileObject::READ_CSV
- SplFileObject::current() - Retrieve current line of file
用户评论:
[#1] vaughn dot clayton+php at servicetrade dot com [2012-11-14 14:15:29]
Note that due to bugs 55807 and 61032, introduced in 5.3.8, if the csv in example #2 has a newline character at the end of each line, the foreach will execute 6 times.
The last time through the loop $row will be bool(false). This is true even if using SplFileObject::SKIP_EMPTY and SplFileObject::DROP_NEW_LINE.
Until the bug is fixed, the workaround is to also add SplFileObject::READ_AHEAD to your setFlags() call.
[#2] v-fpiris at teknober dot com [2011-05-21 07:56:55]
after setting the delimiter '\t' fgetcsv() truncates the value when it is empty string
workaround:
<?php
$file = new SplFileObject($path);
$file->setFlags(SplFileObject::DROP_NEW_LINE);
while ($file->valid()) {
$line = $file->fgets();
$line = explode("\t", $line);
print_r($line);
}
?>