PHP/String/strlen

Calculating the length of a string

 
<?php
$password="password";
if (strlen($password) <= 5){
    echo("Passwords must be at least 5 characters long.");
}
else {
    echo ("Password accepted.");
}
?>

Checking String Length

 
<?php
  define ("MAXLENGTH", 10);
  if (strlen ("Hello World!") > MAXLENGTH){
    echo "The field you have entered can only be " . MAXLENGTH . " characters in length.";
  } else {
    //Insert the field into the database.
  }
?>

Checking String Length: int strlen ( string string )

 
<?php 
define ("MAXLENGTH", 10); 
if (strlen ("Hello World!") > MAXLENGTH){ 
    echo "The field you have entered can be only " . MAXLENGTH . " characters in length."; 
} 
?>

Concisely checking the length of a trimmed string

 
<?
if (strlen(trim("12345")) != 5) {
    print "Please enter a ZIP code that is 5 characters long.";
}
?>

int strlen ( string str ) returns the number of characters in it:

 
<?
    print strlen("Foo") . "\n"; // 3
    print strlen("Goodbye, Perl!") . "\n"; // 14
?>

strlen.php

 
<?php
   $pswd = "secretpswd";
   if (strlen($string) < 10) echo "Password is too short!";
?>