您编写了一个需要PHP 5.1的插件。有人试图用PHP 4将其安装到服务器上。您如何以安全和用户友好的方式处理此问题？
在PHP版本不足的情况下中止插件的最佳方法是什么？
4 个回复
最合适的回答,由SO网友:Geert 整理而成
/**
* Plugin Name: Foo
*/
// Check for required PHP version
if ( version_compare( PHP_VERSION, \'5.1\', \'<\' ) )
{
exit( sprintf( \'Foo requires PHP 5.1 or higher. You’re still on %s.\', PHP_VERSION ) );
}
// The rest of your plugin code follows
但是，错误消息未翻译。为了做到这一点，您必须在exit 呼叫
SO网友:Chris_O
此函数和激活挂钩可防止插件激活，并允许您检查PHP和WordPress的最低版本。
register_activation_hook( __FILE__, array( \'Your_Plugin_Class_Name\', \'activate\' ) );
/**
* Plugin Activation hook function to check for Minimum PHP and WordPress versions
* @param string $wp Minimum version of WordPress required for this plugin
* @param string $php Minimum version of PHP required for this plugin
*/
function activate( $wp = \'3.1\', $php = \'5.2.4\' ) {
global $wp_version;
if ( version_compare( PHP_VERSION, $php, \'<\' ) )
$flag = \'PHP\';
elseif
( version_compare( $wp_version, $wp, \'<\' ) )
$flag = \'WordPress\';
else
return;
$version = \'PHP\' == $flag ? $php : $wp;
deactivate_plugins( basename( __FILE__ ) );
wp_die(\'<p>The <strong>Insert PLugin Name Here</strong> plugin requires\'.$flag.\' version \'.$version.\' or greater.</p>\',\'Plugin Activation Error\', array( \'response\'=>200, \'back_link\'=>TRUE ) );
}
SO网友:onetrickpony
您可以激活它并显示错误消息：
// if PHP version is lower than 5.1
if(version_compare(PHP_VERSION, \'5.1\') < 0){
// show a message inside the dashboard
if(is_admin()){
function my_plugin_notice(){
?>
<div class="error below-h2">
<p>
<?php
printf(__(\'The abc plugin requires at least PHP 5.1. You have %s\'), PHP_VERSION);
?>
</p>
</div>
<?php
}
add_action(\'admin_notices\', \'my_plugin_notice\');
}
// stop here and do nothing further
return;
}
// if PHP version is equal or higher than 5.1
require dirname(__FILE__) . \'/php51code.php\';
SO网友:Joshua Nelson
我知道这是一个古老的问题，但对于那些寻求好的解决方案的人来说，Gary Pendergast有一条很好的路线，涵盖了其他答案中提到的一些基础（参见他的帖子here, 我已经更新了下面的代码来检查PHP版本，但您几乎可以将其用于任何检查）：
// In this example, only allow activation on WordPress 3.7 or higherclass
MyPlugin {
function __construct() {
add_action( \'admin_init\', array( $this, \'check_version\' ) );
// Don\'t run anything else in the plugin, if we\'re on an incompatible WordPress version
if ( ! self::compatible_version() ) {
return;
}
}
// The primary sanity check, automatically disable the plugin on activation if it doesn\'t// meet minimum requirements.static
function activation_check() {
if ( ! self::compatible_version() ) {
deactivate_plugins( plugin_basename( __FILE__ ) );
wp_die( __( \'My Plugin requires PHP 5.1 or higher!\', \'my-plugin\' ) );
}
}
// The backup sanity check, in case the plugin is activated in a weird way,
// or the versions change after activation.
function check_version() {
if ( ! self::compatible_version() ) {
if ( is_plugin_active( plugin_basename( __FILE__ ) ) ) {
deactivate_plugins( plugin_basename( __FILE__ ) );
add_action( \'admin_notices\', array( $this, \'disabled_notice\' ) );
if ( isset( $_GET[\'activate\'] ) ) {
unset( $_GET[\'activate\'] );
}
}
}
}
function disabled_notice() {
echo \'<strong>\' . esc_html__( \'My Plugin requires PHP 5.1 or higher!\', \'my-plugin\' ) . \'</strong>\';
}
static function compatible_version() {
if ( version_compare(PHP_VERSION, \'5.1\', \'<\') ) {
return false;
}
// Add sanity checks for other version requirements here
return true;
}
}
global $myplugin;
$myplugin = new MyPlugin();
register_activation_hook( __FILE__, array( \'MyPlugin\', \'activation_check\' ) );
结束