Category Archives: PHP

Handling Post operation in php with Disabled Radio button

Below example of code shows how to handle the value of disabled radio button passing through post method. if we use radio button group as disabled then if we click submit button it will post null value. Instead of getting null value in this example, we used a hiddenfield called “radiobutton_visibility”. When change the radio… Read More »

Find out the imagemagic path using php

Find out the imagemagic path using php If imagemagic not working in a particular server,most of the time this is because of path problem. Normaly this lbrary available in the path usr/bin. if you need to get the full path of imagemagic use the following commands in php

<?php 
echo "<pre>"; 
system("type convert"); 
echo "</pre>"; 

//You will get the ouput as- convert is /usr/local/bin/convert
?>

<?php

echo "<pre>";

system("type convert");

echo "</pre>";

//You will get the ouput as- convert is /usr/local/bin/convert

Click on Submit/Save button multiple times,Data is saving more than one

In an ajax based save functionality.if i click multiple times on the save button.same data is saved in db more than one depends on the number of clicks How to handle this issue in jquery solution: 1)hide the submit/save button or disable the button after click. 2)use the encodeURIComponent() function for the data passing in… Read More »

Use of window.location.hash In javascript

In a webpage contains so many links.if we click from a link it will redirect to some other page, if we came back to the previous page using back button it will point to the link where we have made click. below code will explains window.location.hash Index.php

<?php
for($i=1;$i<25;$i++)
{
?>
<div id="myid<?php echo $i;?>">
<a href="testpage.php?id=<?php echo $i;?>">Go to Page<?php echo $i;?></a><br>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam varius velit eu porttitor viverra. Nullam commodo nisl a erat luctus maximus. Quisque feugiat leo nec urna hendrerit, a cursus enim fringilla. Aenean sed dui ac nisi ultricies condimentum. Suspendisse sed felis eget mi congue sodales. Mauris at consectetur tellus. Praesent imperdiet arcu auctor porta scelerisque. Sed pulvinar lacus et sodales mattis. Suspendisse commodo malesuada scelerisque. Nulla eget cursus sapien, non fringilla eros.Etiam non massa eget nulla cursus consequat sed vel arcu. Nullam non varius metus. Nunc pharetra pulvinar enim, ac blandit ipsum pulvinar ac. Etiam egestas nibh ut urna egestas, sed mollis velit tristique. Nulla gravida tempus dui et dictum. Nullam ut ex nibh. Integer euismod erat purus, sit amet ullamcorper purus condimentum ut. Donec in enim sit amet ante volutpat tempor. Sed condimentum tincidunt sem, a lobortis tellus mollis a. Sed a velit id lectus ullamcorper venenatis eu id ex. Morbi eleifend risus sit amet dolor interdum, nec feugiat magna feugiat. Nulla porta fermentum tellus, sit amet faucibus ipsum molestie ut. Curabitur accumsan felis ac nulla varius, non elementum lectus fringilla. Sed eget orci sed justo dapibus suscipit id eu tortor. Pellentesque eget maximus mauris, quis feugiat odio.
</div>
<?php
}

$return_id=@$_GET['id'];
?>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

<script>
$(document).ready(function () {
var returnid=<?php echo $return_id;?>

window.location.hash='myid'+returnid;
});
</script>

<?php

for($i=1;$i<25;$i++)

{

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam varius velit eu porttitor viverra. Nullam commodo nisl a erat luctus maximus. Quisque feugiat leo nec urna hendrerit, a cursus enim fringilla. Aenean sed dui ac nisi ultricies condimentum. Suspendisse sed felis eget mi congue sodales. Mauris at consectetur tellus. Praesent imperdiet arcu auctor porta scelerisque. Sed pulvinar lacus et sodales mattis. Suspendisse commodo malesuada scelerisque. Nulla eget cursus sapien, non fringilla eros.Etiam non massa eget nulla cursus consequat sed vel arcu. Nullam non varius metus. Nunc pharetra pulvinar enim, ac blandit ipsum pulvinar ac. Etiam egestas nibh ut urna egestas, sed mollis velit tristique. Nulla gravida tempus dui et dictum. Nullam ut ex nibh. Integer euismod erat purus, sit amet ullamcorper purus condimentum ut. Donec in enim sit amet ante volutpat tempor. Sed condimentum tincidunt sem, a lobortis tellus mollis a. Sed a velit id lectus ullamcorper venenatis eu id ex. Morbi eleifend risus sit amet dolor interdum, nec feugiat magna feugiat. Nulla porta fermentum tellus, sit amet faucibus ipsum molestie ut. Curabitur accumsan felis ac nulla varius, non elementum lectus fringilla. Sed eget orci sed justo dapibus suscipit id eu tortor. Pellentesque eget maximus mauris, quis feugiat odio.

</div>

<?php

}

$return_id=@$_GET['id'];

$(document).ready(function () {

var returnid=<?php echo $return_id;?>

window.location.hash='myid'+returnid;

});

</script>

testpage.php

<div>
<a href="index.php?id=<?php echo @$_GET['id'];?>" >Go Back</a><br>
</div>

<div>

</div>

Check box select/dselect all Examples and demo using jquery/javascript

Create a file called index.html using the below code and try to execute.code explains how select/dselect all for the list of checkboxes.here checkbox id,class are used for the working of select all.

<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">

<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">
<input type="checkbox" class="chkbox_select_all_class" id="select_all">Select All <br>
<input type="checkbox" class="chkbox_class">One <br>
<input type="checkbox" class="chkbox_class">Two <br>
<input type="checkbox" class="chkbox_class">Three <br>
<input type="checkbox" class="chkbox_class">Four <br>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
<script>
$("#select_all").click(function()
{
if(this.checked)
{
$(".chkbox_class").prop('checked',true);
}
else
{
$(".chkbox_class").prop('checked',false);
}
});

$('.chkbox_class').change(function()
{

if(this.checked==false)
{
$("#select_all").prop('checked',false);
}
else
{
if($(".chkbox_class:checked").length==$(".chkbox_class").length)
{
$("#select_all").prop('checked',true);
}
}
});
</script>

<input type="checkbox" class="chkbox_select_all_class" id="select_all">Select All <br>

<input type="checkbox" class="chkbox_class">Three <br>

$("#select_all").click(function()

{

if(this.checked)

{

$(".chkbox_class").prop('checked',true);

}

else

{

$(".chkbox_class").prop('checked',false);

}

});

$('.chkbox_class').change(function()

{

if(this.checked==false)

{

$("#select_all").prop('checked',false);

}

else

{

if($(".chkbox_class:checked").length==$(".chkbox_class").length)

{

$("#select_all").prop('checked',true);

}

});

</script>

The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol.

I can see the above error as redcolor in the firebug window while loading the page.solution is as below pleas add the below code

<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">

1 2	<meta content="text/html;charset=utf-8" http-equiv="Content-Type"> <meta content="utf-8" http-equiv="encoding">

Reset an array having Particular or similar key.Unset an array using pregmatach key search

$myarray['my_id']='sss';
$myarray['datatext_1']='fdsafd';
$myarray['datatext_2']='ggg';
$myarray['datatext_3']='sss';
$myarray['datatexts_3']='sss';
$myarray['user_type']='sss';
foreach ($myarray as $key => $value) {
                    if (preg_match('/datatext_\d/', $key)) {
                   
						unset($myarray[$key]);
                    }
                }
				
				
echo "<pre>";print_r($myarray);echo "<br>";

$myarray['my_id']='sss';

$myarray['datatext_1']='fdsafd';

$myarray['datatext_2']='ggg';

$myarray['datatext_3']='sss';

$myarray['datatexts_3']='sss';

$myarray['user_type']='sss';

foreach ($myarray as $key => $value) {

if (preg_match('/datatext_\d/', $key)) {

unset($myarray[$key]);

}

echo "<pre>";print_r($myarray);echo "<br>";

Remove duplicate element in an array

if array elements contain multiple values like below,how to remove duplicate element

array
(
    [0] => mydoubts.in+testone@gmail.com,mydoubts.in+onesec@gmail.com,mydoubts.in+testone@gmail.com
    [1] => mydoubts.in+testone@gmail.com,mydoubts.in+testonesec@gmail.com
)

array

(

[0] => mydoubts.in+testone@gmail.com,mydoubts.in+onesec@gmail.com,mydoubts.in+testone@gmail.com

[1] => mydoubts.in+testone@gmail.com,mydoubts.in+testonesec@gmail.com

)

we can use array_unique on an array created using explode function.Code will be looks like below

<?php
$to_list=array('mydoubts.in+testone@gmail.com,mydoubts.in+onesec@gmail.com,mydoubts.in+testone@gmail.com','mydoubts.in+testone@gmail.com,mydoubts.in+testonesec@gmail.com');
echo "<pre>";print_r($to_list);echo "<br>";
 for ($s = 0; $s < count($to_list); $s++) {
$to_list[$s] = implode(',', array_unique(explode(',', $to_list[$s])));
}
print_r($to_list);echo "<pre>";
?>

<?php

$to_list=array('mydoubts.in+testone@gmail.com,mydoubts.in+onesec@gmail.com,mydoubts.in+testone@gmail.com','mydoubts.in+testone@gmail.com,mydoubts.in+testonesec@gmail.com');

echo "<pre>";print_r($to_list);echo "<br>";

for ($s = 0; $s < count($to_list); $s++) {

$to_list[$s] = implode(',', array_unique(explode(',', $to_list[$s])));

}

print_r($to_list);echo "<pre>";

Space validation for username

validating space in a string or checking whether space is there or not in the string using below regex function

<script>
var regex = /^[a-zA-Z0-9.\-_$@*!]{3,30}$/;
var username=' vasant-han ';
var results=regex.test(username);
alert(results);
</script>

var regex = /^[a-zA-Z0-9.\-_$@*!]{3,30}$/;

var username=' vasant-han ';

var results=regex.test(username);

alert(results);

</script>