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Wednesday, 3 December 2014

mysql_fetch_field - Get column information from a result

object mysql_fetch_field ( resource $result [, int $field_offset = 0 ] )
Get column information from a result and return as an object
Returns an object containing field information. This function can be used to obtain information about fields in the provided query result.

<?php
$conn 
mysql_connect('localhost''mysql_user''mysql_password');
if (!
$conn) {
    die(
'Could not connect to mysql server: ' mysql_error());
}
mysql_select_db('database'); //setup of database$result mysql_query('select * from table');
if (!
$result) {
    die(
'MySql Error: ' mysql_error());
}
/* get column metadata */$i 0;
while (
$i mysql_num_fields($result)) {
    echo 
"Information for column $i:<br />\n";
    
$meta mysql_fetch_field($result$i);
    if (!
$meta) {
        echo 
"No information available<br />\n";
    }
    echo 
"<pre>
blob:         
$meta->blob
max_length:   
$meta->max_length
multiple_key: 
$meta->multiple_key
name:         
$meta->name
not_null:     
$meta->not_null
numeric:      
$meta->numeric
primary_key:  
$meta->primary_key
table:        
$meta->table
type:         
$meta->type
unique_key:   
$meta->unique_key
unsigned:     
$meta->unsigned
zerofill:     
$meta->zerofill
</pre>"
;
    
$i++;
}
mysql_free_result($result);?>



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