Array Php learn

Array - php...|

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    <h1>Arrays</h1>
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      <h3>PHP - Answer</h3>
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      <div id='very'>
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        <h1>Arrays</h1>
        <p>An array stores multiple values in one single variable</p>
        <script>
           str = ' <i> I like Volvo, BMW and Toyota </i> '
           document.write(str)
        </script>
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      <h3>HTML</h3>
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      <pre id='gray'>&lt;body>
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      &lt;h1>Arrays&lt;/h1>
      &lt;p>An array stores multiple values in one single variable:&lt;/p>
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      &lt;/body></pre>
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      <h3>PHP</h3>
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      <pre id='gray'>&lt;?php
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      $cars = array("Volvo", "BMW", "Toyota");
      echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . ".";
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      ?></pre>
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<div id='cont'>
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    <h1>What is an Array?</h1>
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      <h3>PHP - Answer</h3>
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        <p>An array is a special variable, which can hold more than one value at a time</p>
        <p>If you have a list of items (a list of car names, for example), storing the cars in single variables could look like this:</p>
        <script>
          str1= '<i> Volvo'+ '<br>' + 'BMW' +'<br>'+'Toyota </i> ' 
           document.write(str1 )
        </script>
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    <h2>Codigo</h2>
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      <h3>HTML</h3>
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      <pre id='gray'>&lt;body>
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      &lt;p> An array is a special variable, which can hold more than one value at a time &lt;/p>
      &lt;p> If you have a list of items (a list of car names, for example), storing the cars in single variables could look like this
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      &lt;/body></pre>
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      <h3>PHP</h3>
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      <pre id='gray'>&lt;?php
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      $cars1 = "Volvo";
      $cars2 = "BMW";
      $cars3 = "Toyota";
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      ?></pre>
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<div id='cont'>
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    <h1>PHP Indexed Arrays</h1>
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    <h2>Resultado</h2>
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      <h3>PHP - Answer</h3>
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      <div id='very'>
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        <h1>PHP Indexed Arrays</h1>
        <p>There are two ways to create indexed arrays:</p>
        <p>The index can be assigned automatically (index always starts at 0), like this:</p>
        <script>
          str2= ' <i> I like Volvo, BMW and Toyota</i>' 
            document.write(str2 );
        </script>
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    <h2>Codigo</h2>
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      <h3>HTML</h3>
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      <pre id='gray'>&lt;body>
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      &lt;h1> PHP Indexed Arrays  &lt;h1>
      &lt;p>  There are two ways to create indexed arrays:   &lt;/p>
      &lt;p>  The index can be assigned automatically (index always starts at 0), like this:   &lt;/p>
      &lt;!--
      $cars = array("Volvo", "BMW", "Toyota");
      $cars[0] = "Volvo";
      $cars[1] = "BMW";
      $cars[2] = "Toyota";
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      &lt;/body></pre>
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      <h3>PHP</h3>
      <!-- ------ start js -------- -->
      <pre id='gray'>&lt;?php
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      $cars = array("Volvo", "BMW", "Toyota");
      echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . ".";
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      ?></pre>
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  </article>
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<div id='cont'>
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    <h1>Length of an Array</h1>
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    <h2>Resultado</h2>
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      <h3>PHP - Answer</h3>
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        <h1>Get The Length of an Array - The count() Function</h1>
        <p>The count() function is used to return the length (the number of elements) of an array</p>
        <script>
          str3= 3 ;
           document.write(str3 );
        </script>
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    <h2>Codigo</h2>
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      <h3>HTML</h3>
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      &lt;h1>  Get The Length of an Array - The count() Function  &lt;h1>
      &lt;p> The count() function is used to return the length (the number of elements) of an array    &lt;/p>
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      &lt;/body></pre>
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      <h3>PHP</h3>
      <!-- ------ start js -------- -->
      <pre id='gray'>&lt;?php
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      $cars = array("Volvo", "BMW", "Toyota");
      echo count($cars);
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      ?></pre>
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<div id='cont'>
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    <h1>Loop Through an Indexed Array</h1>
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<div id='rot'>
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    <h2>Resultado</h2>
    <div>
      <h3>PHP - Answer</h3>
      <!-- ------ start text ------ -->
      <div id='very'>
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        <h1>Loop Through an Indexed Array</h1>
        <script>
          str4= ' <i>Volvo<br> BMW <br>Toyota <br> </i>' ;
           document.write(str4 );
        </script>
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    <h2>Codigo</h2>
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      <h3>HTML</h3>
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      <pre id='gray'>&lt;body>
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      &lt;h1>  Loop Through an Indexed Array  &lt;h1>
      &lt;p>     &lt;/p>
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      &lt;/body></pre>
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      <h3>PHP</h3>
      <!-- ------ start js -------- -->
      <pre id='gray'>&lt;?php
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      $cars = array("Volvo", "BMW", "Toyota");
      $arrlength = count($cars);
      for ($x = 0; $x &lt; $arrlength; $x++) {
      echo $cars[$x];
      echo "&lt;br>";
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      ?></pre>
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    <h1>PHP Associative Arrays</h1>
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    <h2>Resultado</h2>
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      <h3>PHP - Answer</h3>
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        <h1>PHP Associative Arrays</h1>
        <p>Associative arrays are arrays that use named keys that you assign to them.</p>
        <p>There are two ways to create an associative array:</p>
        <script>
          str5= ' <i> Peter is 35 years old </i>' ;
           document.write( str5 );
        </script>
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    <h2>Codigo</h2>
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      <h3>HTML</h3>
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      <pre id='gray'>&lt;body>
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      &lt;h1> PHP Associative Arrays  &lt;h1>
      &lt;p>  Associative arrays are arrays that use named keys that you assign to them  &lt;/p>
      &lt;p>  There are two ways to create an associative array:   &lt;/p>
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      &lt;/body></pre>
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      <h3>PHP</h3>
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      <pre id='gray'>&lt;?php
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      $age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
      echo "Peter is " . $age['Peter'] . " years old.";
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      ?></pre>
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<div id='cont'>
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    <!-- -------------------------------- -->
    <h1>PHP Associative Arrays</h1>
    <!-- -------------------------------- -->
  </div>
</div>
<div id='rot'>
  <article>
    <h2>Resultado</h2>
    <div>
      <h3>PHP - Answer</h3>
      <!-- ------ start text ------ -->
      <div id='very'>
        <!-- :::::::::::::::::::::::::::::::::::::::::::::: -->
        <h1>PHP Associative Arrays</h1>
        <p>Associative arrays are arrays that use named keys that you assign to them.</p>
        <p>There are two ways to create an associative array:</p>
        <script>
          str6= ' <i>Peter is 35 years old </i> ' ;
           document.write( str6 );
        </script>
        <!-- :::::::::::::::::::::::::::::::::::::::::::::: -->
        <!-- ------ end text -------- -->
      </div>
    </div>
  </article>
  <article>
    <h2>Codigo</h2>
    <div>
      <h3>HTML</h3>
      <!-- ------ start text ------ -->
      <pre id='gray'>&lt;body>
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      &lt;h1> PHP Associative Arrays  &lt;h1>
      &lt;p>  Associative arrays are arrays that use named keys that you assign to them  &lt;/p>
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      &lt;/body></pre>
      <!-- ------ end html -------- -->
      <hr>
      <!-- ------ begin -------- -->
      <h3>PHP</h3>
      <!-- ------ start js -------- -->
      <pre id='gray'>&lt;?php
      <!-- :::::::::::::::::::::::::::::::::::::::::::::: -->
      $age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
      echo "Peter is " . $age['Peter'] . " years old.";
      <!-- :::::::::::::::::::::::::::::::::::::::::::::: -->
      ?></pre>
    </div>
  </article>
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<div id='cont'>
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    <h1>Loop Through an Associative Array</h1>
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    <h2>Resultado</h2>
    <div>
      <h3>PHP - Answer</h3>
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      <div id='very'>
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        <h1>Loop Through an Associative Array</h1>
        <p>To loop through and print all the values of an associative array, you could use a foreach loop,like this</p>
        <script>
          str7= ' <i>   Key=Peter, Value=35 <br> Key=Ben, Value=37 <br> Key=Joe, Value=43   </i> ' ;
           document.write( str7 );
        </script>
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    <h2>Codigo</h2>
    <div>
      <h3>HTML</h3>
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      <pre id='gray'>&lt;body>
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      &lt;h1> Loop Through an Associative Array  &lt;h1>
      &lt;p> To loop through and print all the values of an associative array, you could use a foreach loop,like this   &lt;/p>
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      &lt;/body></pre>
      <!-- ------ end html -------- -->
      <hr>
      <!-- ------ begin -------- -->
      <h3>PHP</h3>
      <!-- ------ start js -------- -->
      <pre id='gray'>&lt;?php
      <!-- :::::::::::::::::::::::::::::::::::::::::::::: -->
      $age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
      foreach($age as $x => $x_value) {
      echo "Key=" . $x . ", Value=" . $x_value;
      echo "&lt;br>";
      }
      <!-- :::::::::::::::::::::::::::::::::::::::::::::: -->
      ?></pre>
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