convert string to input stream(InputStream) using java

package com.pritom;
 
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
 
public class StringToInputStreamExample {
    public static void main(String[] args) throws IOException {
    String str = "This is a String to InputStream";
 
    // convert String into InputStream
    InputStream is = new ByteArrayInputStream(str.getBytes());
 
    // read it with BufferedReader
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
 
    String line;
    while ((line = br.readLine()) != null) {
       System.out.println(line);
    }
 
    br.close();
   }
}

Cakephp delete and update records by conditions

Delete Records:
$this->ModelName->deleteAll(
    array(
        "ModelName.id" => 10
    )
);

Update Records:
$this->ModelName->updateAll(
    /* UPDATE FIELD */
    array(
        "ModelName.is_active" => 0,
    ),
    /* CONDITIONS */
    array(
        "ModelName.id" => 20,
        "ModelName.name LIKE" => '%SEARCH_TEXT%',
        "ModelName.name <>" => 'NOT_EQUAL_VALUE',
        'ModelName.integer_field > ' => 50, [Can use operand here]
        'TIMESTAMPDIFF(DAY, ModelName.date, NOW())' => 22 [number of day]
    )
);

jQuery post call using ajax

jQuery.ajax({
    type: "POST",
    url: "http://domain.com/save_form_data",
    data: jQuery("form").serializeArray(),
    success: function(data) {
        console.log(data);
        alert("Success");
    },

    error: function() {

       alert("Error occurred."); 

    }
});

CKEDITOR instances and operations by jQuery

 var id = "CKEDITOR_100";

/* Get CKEDITOR */
var editor = CKEDITOR.instances[id];

/* Set data to CKEDITOR */
editor.setData("The Content");

/* Update CKEDITOR content */
try {
    for (var i in CKEDITOR.instances) {
        if (CKEDITOR.instances[i]) {
            CKEDITOR.instances[i].updateElement();
        }
    }
} catch (ex) {

}

/* Destroy CKEDITOR */
editor.destroy();

jsFiddle example of CKEDITOR instance update content

Jquery call function, name taken from a string

Get function name from a string.
var formcheck = "function_name";
if (typeof window[formcheck] === 'function'){
    formok = window[formcheck]();
    e.preventDefault();
}

function function_name(){
    alert("Checked");
    return false;
}

PHP filter with preg_replace allow only letters and some other characters

Only receive - letters, numbers, spaces

$str = preg_replace("/[^A-Za-z0-9 ]/","",$str);
$str = preg_replace("/[^A-Za-z0-9\s]/","",$str);
$str = preg_replace("/[^A-Za-z0-9[:space:]]/","",$str);

$str = preg_replace("/([^a-z0-9A-Z[:space:]\'\"\?\!\,\.\-\:\~]+)/", "", $str]);

$str = preg_replace("/([--]+)/", "-", $str); 

$str = preg_replace("/<\/address>\r\n/e", "'</address>'", $str); 

When using the /e modifier in preg_replace, you have to pass a string of code to 

be evaluated as the replacement parameter, not an already-evaluated expression.

$str = preg_replace("/<\/address>[[:space:]]*?<address/e", "'</address><address'", $str); 

Round to a certain number of places using jQuery

For rounding decimals you can use the built-in JavaScript methods toFixed or toPrecision.

var num = 10;
var result = num.toFixed(2); // result will equal 10.00

num = 930.9805;
result = num.toFixed(3); // result will equal 930.981

num = 500.2349;
result = num.toPrecision(4); // result will equal 500.2

num = 5000.2349;
result = num.toPrecision(4); // result will equal 5000

num = 555.55;
result = num.toPrecision(2); // result will equal 5.6e+2