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Server Validation - Repopulating Checkbox Array

Thread began 4/03/2012 6:42 am by Ian S | Last modified 4/04/2012 9:23 am by Ian S | 2782 views | 3 replies

Jason ByrnesWebAssist

it's not a quick task, it is definitely more involved and requires hand coding.

first, a multiple checkbox like this will pass the selected values using an array. to validate the checkboxes, the array needs to be converted to a comma separated string.

add the following code at line 1 to do that:


if($_SERVER["REQUEST_METHOD"] == "POST")     {
$_POST as $key => $val) {
is_array($_POST[$key])) $_POST[$key] = implode(", "$_POST[$key]);

when validation fails, the validated entries code for the checkbox (yours may look different):

<?php echo(ValidatedField("pagename","Checkbox")) ?>

will give us a comma separated list of the checked items, we need to convert that back to an array by adding the following code just before the form tag

<?php $selected explode(", "ValidatedField("untitled4","Checkbox")); ?>

then in each checkbox, we can use the in_array function to see if that checkbox value is in the array, for example:

<input type="checkbox" name="Checkbox[]" value="1" <?php if(in_array("1"$selected)) echo("checked=\"checked\""); ?> id="CheckboxGroup1_0" />

    <br />
      <input type="checkbox" name="Checkbox[]" value="2" <?php if(in_array("2"$selected)) echo("checked=\"checked\""); ?> id="CheckboxGroup1_1" />
    <br />
      <input type="checkbox" name="Checkbox[]" value="3" <?php if(in_array("3"$selected)) echo("checked=\"checked\""); ?> id="CheckboxGroup1_2" />

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