PHP string md5() function

PHP string md5() is predefined function. It is used to calculate the MD5 hash of a string. It uses the RSA DATA security. It returns the hash as a 32 character hexadecimal number.

Note: We should not use this function for secure passwords, due to the fast nature of this hashing algorithm.

Syntax:

Parameter	Description	Required/Optional
String	Specify string to be calculated.	required
raw	Specify hex or binary format TRUE - Raw 16 character binary format FALSE - Default. 32 character hex number	Optional

Example 1

<?php
$str = "PHP";
echo "Your string is:".$str;
echo "<br>";
echo "By using md5() functon:".md5($str);
?>

Output:

Your string is:PHP
By using md5() functon:2fec392304a5c23ac138da22847f9b7c

Example 2

<?php
$str = 'PHP';
if (md5($str) =='2fec392304a5c23ac138da22847f9b7c'){
    echo "'PHP' string is equall to encrypted string";
}
?>

Output:

'PHP' string is equall to encrypted string

Example 3

<?php 
$str = "PHP"; 
echo "Your string is: ".$str."<br>"; 
echo "TRUE - Raw 16 character binary format: ".md5($str, TRUE)."<br>"; 
echo "FALSE - 32 character hex number: ".md5($str)."<br>"; 
?>

Output:

Your string is: PHP
TRUE - Raw 16 character binary format: /�9# ��:�8�"??|
FALSE - 32 character hex number: 2fec392304a5c23ac138da22847f9b7c

Example 4

<?php
$str = "PHP";
echo "Your string is:".$str."<br>";
echo "By using md5()fnction:".md5($str);
if (md5($str) == "8b1a9953c4611296a827abf8c47804d7")
  {
  echo "<br>Hello PHP!";
  exit;
  }
?>

Output:

Your string is: PHP
By using md5() function: 2fec392304a5c23ac138da22847f9b7c

Note: The encrypted value "8b1a9953c4611296a827abf8c47804d7" is not equal to "PHP" string so Hello PHP message not displayed.

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PHP string md5() function

Note: We should not use this function for secure passwords, due to the fast nature of this hashing algorithm.

Syntax:

Example 1

Example 2

Example 3

Example 4

Note: The encrypted value "8b1a9953c4611296a827abf8c47804d7" is not equal to "PHP" string so Hello PHP message not displayed.

Feedback

Help Others, Please Share

Learn Latest Tutorials

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