在PHP的echo中包含php和html

Simple php really, just can't get it for some reason...

<?php
$myvalue = 'yes'
if ( $myvalue == 'yes' ) {
    echo 'This is some test content, within which is some more php bits 
    <?php echo 'Test'; ?> and an if statement 
    <?php if ( $anothervalue = "test" ) { echo 'Print this'; } else 
    { echo 'Print that' ; } ?>
    And then some more content
    <br />
    Test
    ?>

} else {
    echo 'The value didnt match';
}
?>

I need to include the php inside the echo, how can i do this?

You have to concatenate strings bits with the . operator:

echo 'This is some test content' . ' chained to other stuff' . someFunction() . 'and some other stuff' . $someVariable . ', right?';

you can try concatenation like

echo "<img src='".$url."' />";

As far as I know, you can't. echo is just for outputting.

Refactor instead.

<?php
  $myvalue = 'yes'
  if ( $myvalue == 'yes' ) {
?>
This is some test content, within which is some more php bits <?php echo 'Test'; ?> and an if statement 
<?php 
    if ( $anothervalue = "test" ) { 
      echo 'Print this'; 
    } else {
      echo 'Print that' ; 
    } 
?>
And then some more content
<br />
Test
<?php
} else {
    echo 'The value didnt match';
}

<?php

function dosomething($anothervalue){
if ( $anothervalue = "test" ) {
return 'Print this'; } 
else { return 'Print that' ; } 
}


$myvalue = 'yes'
if ( $myvalue == 'yes' ) {
echo 'This is some test content, within which is some more php bits'.dosomething('anothervalue'); ?>
And then some more content


?>

Try this but I suggest you go to w3schools and learn up on the basics before continuing.

<?php
  $myvalue = 'yes';
  if ( $myvalue == 'yes' ) {
     echo 'This is some test content, within which is some more php bits Test and an if statement';
  if ( $anothervalue = "test" ) { 
      echo 'Print this'; 
  } 
  else { 
      echo 'Print that'; 
  }
?>
And then some more content
<br />
Test
<?php
   }
   else
   {
      echo 'The value didnt match';
   }
?>

I would suggest that you create a function first:

<?php

function dosomething($anothervalue){
if ( $anothervalue = "test" ) {
return 'Print this'; } 
else { return 'Print that' ; } 
}

then include it in your statement/text;

$myvalue = 'yes'
    if ( $myvalue == 'yes' ) {
    echo 'This is some test content, within which is some more php bits'.dosomething('anothervalue'); ?>
    And then some more content


    ?>

try this

<?php
    $myvalue = 'yes';
    if ( $anothervalue == "test" ) { $test = 'Print this'; } else { $test = 'Print that' ; }
    if ( $myvalue == 'yes' ) {
        echo "This is some test content, within which is some more php bits $test
        <br />
        Test";
    }
    else
    {
         echo 'The value didnt match';
    }
?>

You can certain express conditional text in the context of an echo. You can use string concatenation (using commas or dots) with inline conditional syntax (ternary operators) so that you don't have to bounce in and out of <?php nor would you need to write multiple echos.

Code: (Demo)

$myvalue = 'yes';
$anothervalue = 'test';
if ($myvalue == 'yes') {
    echo 'This is some test content, within which is some more php bits Test ' , ($anothervalue == 'test' ? 'Print this' : 'Print that') , ' And then some more content<br />Test';
} else {
    echo 'The value didnt match';
}

Output:

This is some test content, within which is some more php bits Test Print this And then some more content<br />Test