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constructor Cache_Lite::Cache_Lite
PEAR Manual
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constructor Cache_Lite::Cache_Lite()

constructor Cache_Lite::Cache_Lite() -- Constructor

Synopsis

require_once 'Lite.php';

void constructor Cache_Lite::Cache_Lite ([array $options = array(NULL)])

Description

The constructor of the Cache_Lite core class. You can give an associative array as an argument to set a lot of options.

Parameter

array $options

associative array to set a lot of options

Table 23-1.

OptionData TypeDefault ValueDescription
cacheDir string /tmp/ directory where to put the cache file (with a trailing slash at the end)
caching boolean TRUE enable / disable caching
lifeTime integer 3600 cache lifetime in seconds
fileLocking boolean TRUE enable / disable fileLocking (can avoid cache corruption under bad circumstances)
writeControl boolean TRUE enable / disable write control (enable write control will lightly slow the cache writing but not the cache reading, write control can detect some corrupt cache files but maybe it's not a perfect control)
readControl boolean TRUE enable / disable read control (if enabled, a control key is embeded in cache file and this key is compared with the one calculated after the reading)
readControlType string crc32 Type of read control (only if read control is enabled). Must be 'md5' (for a md5 hash control (best but slowest)), 'crc32' (for a crc32 hash control (lightly less safe but faster)) or 'strlen' (for a length only test (fastest))
pearErrorMode integer CACHE_LITE_ERROR_RETURN pear error mode (when raiseError is called) (CACHE_LITE_ERROR_RETURN for just returning a PEAR_Error object or CACHE_LITE_ERROR_DIE for immediate stop of the script (good for debug))
fileNameProtection boolean TRUE file Name protection (if set to true, you can use any cache id or group name, if set to false, it can be faster but cache ids and group names will be used directly in cache file names so be carefull with special characters...)
automaticSerialization boolean FALSE enable / disable automatic serialization (it can be used to save directly datas which aren't strings but it's slower)
memoryCaching boolean FALSE [BETA QUALITY] enable / disable "Memory Caching" (NB : there is no lifetime for memory caching, only the end of the script)
onlyMemoryCaching boolean FALSE [BETA QUALITY] enable / disable "Only Memory Caching" (if enabled, files are not used anymore)
memoryCachingLimit integer 1000 [BETA QUALITY] max number of records to store into memory caching

Throws

throws no exceptions thrown

Note

This function can not be called statically.

Example

Example 23-1. Using most common options

<?php
require_once "Cache/Lite.php";

$options = array(
    'cacheDir' => '/tmp/',
    'lifeTime' => 7200,
    'pearErrorMode' => CACHE_LITE_ERROR_DIE
);

$cache = Cache_Lite($options);

?>
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