如何判断php mysqli扩展类是否开启
php判断mysqli扩展类是否开启,源码如下：
<?php
/* by http://www.manongjc.com/article/1206.html */
function mysqlinstalled (){
if (function_exists ("mysql_connect")){
return true;
} else {
return false;
}
}
function mysqliinstalled (){
if (function_exists ("mysqli_connect")){
return true;
} else {
return false;
}
}
if (mysqlinstalled()){
echo "<p>the mysql extension is installed.</p>";
} else {
echo "<p>the mysql extension is not installed..</p>";
}
if (mysqliinstalled()){
echo "<p>the mysqli extension is installed.</p>";
} else {
echo "<p>the mysqli extension is not installed..</p>";
}
?>
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