Discuz plug-in core function Hookscript analysis.

function Hookscript ($script, $hscript, $type = ' Funcs ', $param = Array (), $func = ', $scriptextra = ') {
# This function is the function of the Fang heart of the plugin tick. is extremely important for plug-in development. We analyze each.
# Hookscript ($script, $hscript, $type = ' Funcs ', $param = Array (), $func = ", $scriptextra =")
# Hookscript ($script, $hscript, $type = ' Funcs ', $param = Array (), $func = ", $scriptextra =")
# Hookscript (method name, type (such as global, theme, move, etc...), call type, parameter, can hook up a pair of methods, special parameters);
Global $_g; By introducing the core array, the default is a total of 4KB large arrays,
Static $pluginclasses; Static cargo plug-in class array to calculate whether the execution file has been introduced.
if ($hscript = = ' Home ') {//When $hscript equals home, do some variable conversion, the special parameter is valid here.
if ($script = = ' space ') {
$scriptextra =! $scriptextra? $_get[' do ': $scriptextra;
$script = ' space '. (!empty ($scriptextra)? ' _ '. $scriptextra: ');
} elseif ($script = = ' SPACECP ') {
$scriptextra =! $scriptextra? $_get[' AC ': $scriptextra;
$script. =!empty ($scriptextra)? ' _ '. $scriptextra: ';
}
}

# Determine if the plugin is defined or open. otherwise quit.
if (!isset ($_g[' setting '][hooktype][$hscript] [$script] [$type])) {
Return
}
# Determine if the plugin has a cache, and if not, exit.
if (!isset ($_g[' cache ' [' plugin '])) {
Loadcache (' plugin ');
}

# Loop out the module array, the module array contains the file path.
foreach (array) $_g[' setting '][hooktype][$hscript [$script] [' module '] as $identifier = = $include) {
Pluginrunlist here detects if the method is disabled, or skips it once.
if ($_g[' pluginrunlist ') &&!in_array ($identifier, $_g[' pluginrunlist ']) {
Continue
}
The right to judge.
$hooksadminid [$identifier] =!$_g[' setting '][hooktype][$hscript] [$script] [' Adminid '] [$identifier] | | ($_g[' setting '][hooktype][$hscript] [$script] [' Adminid '] [$identifier] && $_g[' Adminid '] > 0 && $_g [' Setting '] [' Hookscript '] [$hscript] [$script] [' Adminid '] [$identifier] >= $_g[' Adminid ']);
if ($hooksadminid [$identifier]) {////The file will be introduced only if the permission is passed. Personally think the $pluginclasses array should be used.
@include_once discuz_root. " /source/plugin/'. $include. Class.php ';
}
}

# The set of judging methods is an array, (is is_array necessary to suppress errors with @?)
if (@is_array ($_g[' setting '][hooktype][$hscript [$script] [$type])) {
$_g[' inhookscript ') = true; Can only indicate that the call was successful.
The method that handles additional calls is incremented so that it can be used in loops.
$funcs =! $func? $_g[' setting '][hooktype][$hscript] [$script] [$type]: Array ($func = $_g[' setting '][hooktype][$hscript] [$script] [$type] [$func]);
Loop through all the methods. multidimensional arrays, taking into account that a type of hook may have multiple implementations.
foreach ($funcs as $hookkey = = $hookfuncs) {
foreach ($hookfuncs as $hookfunc) {
$hookfunc [0] can also be understood as the name of the class for the type.
$hookfunc [1] for the method of execution
if ($hooksadminid [$hookfunc [0]]) {
# The name of the class needs to be reorganized here.
$classkey = (Hooktype! = ' hookscriptmobile '?) ': ' Mobile '). ' Plugin_ '. ($hookfunc [0]. ($hscript! = ' global '? ' _ '. $hscript: '));

# exit if the class is not loaded. The false parameter is to not check for ingestion.
if (!class_exists ($classkey, false)) {
Continue
}
# If you don't instantiate it, instantiate it once.
if (!isset ($pluginclasses [$classkey])) {
$pluginclasses [$classkey] = new $classkey;
}
# Judgment $hookfunc[1] method does not exist in the instance. Just quit.
if (!method_exists ($pluginclasses [$classkey], $hookfunc [1])) {
Continue
}
# then call the $hookfunc[1] method, and implant the method.
$return = $pluginclasses [$classkey]-> $hookfunc [1] ($param);
$param = Var_export ($param, true);
echo "{$classkey}-> $hookfunc [1] ($param) <br/>"; These two lines can be printed specifically.

# The judgment type has a feature and exists in the Pluginhooks array, and then exits.
if (substr ($hookkey, -7) = = ' _extend ' &&!empty ($_g[' setting ' [' pluginhooks '] [$hookkey])) {
Continue
}

# Enter when the return value is evaluated as an array.
if (Is_array ($return)) {
# $hookkey Determine if there is a plug-in hook. And if the array. It then loops, releasing the return value to a different assignment.
if (!isset ($_g[' setting '] [' pluginhooks '] [$hookkey]) | | Is_array ($_g[' setting ' [' pluginhooks '] [$hookkey])) {
foreach ($return as $k = = $v) {
$_g[' Setting ' [' pluginhooks '] [$hookkey] [$k]. = $v;
}
} else {
foreach ($return as $k = = $v) {
$_g[' Setting ' [' pluginhooks '] [$hookkey] [$k] = $v;
}
}
} else {
#假如返回值不是数组, the return value is released in a different way.
if (!is_array ($_g[' setting ' [' pluginhooks '] [$hookkey])) {
$_g[' Setting ' [' pluginhooks '] [$hookkey]. = $return;
} else {
foreach ($_g[' setting ' [' pluginhooks '] [$hookkey] as $k and $v) {
$_g[' Setting ' [' pluginhooks '] [$hookkey] [$k]. = $return;
}
}
}
}
}
}
}
# What does it mean to change a variable, which defines true above, which defines false here, is the calculation process complete?
$_g[' inhookscript ' = false;
}

Discuz plug-in core function Hookscript analysis.