03-04-2013
Quote:
Originally Posted by
RudiC
Does it? I don't think so. The | char opens a pipe and makes the shell wait for the next command in the pipe.
The shell command parsing step which looks for pipes has already concluded by the time parameter expansion occurs. There's nothing special about a pipe character in a variable. You'd have to use eval to make it so.
---------- Post updated at 10:10 AM ---------- Previous update was at 10:01 AM ----------
Quote:
Originally Posted by
ravisingh
I summarize that when IFS is set to ':' or '|', echo used with variable doesn't work unless the variable is quoted.
It took quite some time to conclude this.
What's happening is perfectly normal. It's called field splitting.
Field splitting is one of the final steps in sh command parsing. After the variable is replaced with its value, that value is split into fields using IFS. An IFS character will never be seen in a command argument unless it's quoted (since quoting tells the shell not to perform field splitting).
Regards,
Alister
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LEARN ABOUT PHP
mssql_num_fields
MSSQL_NUM_FIELDS(3) MSSQL_NUM_FIELDS(3)
mssql_num_fields - Gets the number of fields in result
SYNOPSIS
int mssql_num_fields (resource $result)
DESCRIPTION
mssql_num_fields(3) returns the number of fields in a result set.
PARAMETERS
o $result
- The result resource that is being evaluated. This result comes from a call to mssql_query(3).
RETURN VALUES
Returns the number of fields, as an integer.
EXAMPLES
Example #1
mssql_num_fields(3) example
<?php
// Connect to MSSQL and select the database
$link = mssql_connect('KALLESPCSQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php', $link);
// Select some data from our database
$data = mssql_query('SELECT [name], [age] FROM [php].[dbo].[persons]');
// Construct a table
echo '<table border="1">';
$header = false;
// Iterate through returned results
while ($row = mssql_fetch_array($data)) {
// Build the table header
if (!$header) {
echo '<thead>';
echo '<tr>';
for ($i = 1; ($i + 1) <= mssql_num_fields($data); ++$i) {
echo '<td>' . ucfirst($row[$i]) . '</td>';
}
echo '</tr>';
echo '</thead>';
echo '<tbody>';
$header = true;
}
// Build the row
echo '<tr>';
foreach($row as $value) {
echo '<td>' . $value . '</td>';
}
echo '</tr>';
}
// Close table
echo '</tbody>';
echo '</table>';
// Clean up
mssql_free_result($data);
mssql_close($link);
?>
SEE ALSO
mssql_query(3), mssql_fetch_field(3), mssql_num_rows(3).
PHP Documentation Group MSSQL_NUM_FIELDS(3)