Reference - Parms functions - strlen

<p>{echo 'well done' | stars}</p>
<p>{echo 'well done' | function:stars}</p>
<p>{echo 'well done' | upper | stars | php:strlen}</p>

<?php

  // A {data} named on its closing tag parses its walked content, in which a value's
  // syntax characters travel as stand-ins - a spliced comma splits no CSV cell, a quote
  // closes no JSON string. The parsed fields kept them: "Smith, John" was stored with the
  // comma's stand-in, so {if}, where= and php: calls compared and measured another string.

  $people = [ [ 'name' => 'Smith, John' ], [ 'name' => 'x=1' ], [ 'name' => 'say "hi"' ] ];

?>

{data}
name
{people}"{!name}"
{/people}
{/data 'p'}{data}[{people}{notFirst@people},{/notFirst@people}{"n":"{!name}"}{/people}]{/data 'q'}A[{p}{if $name eq 'Smith, John'}eq{else}ne{/if};{/p}]B[{p where='$name eq "x=1"'}{$name}@else@none{/p}]C[{q}{echo php:strlen($n)};{/q}]

<?php

  // Four hundred rows, each splicing a body of 10 KB of its own into an expression: kept for
  // the request, the texts held some 20 MB after the loop; the 4 MB of the values themselves
  // stay, kept by padSpliceRecord for the guards of the splice.

  $rows = [];

  for ( $i = 0; $i < 400; $i++ )
    $rows [] = [ 'body' => str_repeat ( 'lorem ipsum ', 850 ) . $i ];

  $before = memory_get_usage ();

?>

{rows}{echo {$body} | php:strlen | ''}{/rows}[{echo php:memory_get_usage() - $before lt 16000000 ? 'bounded' : 'kept'}]

{set $n = 3/}[{echo (1.25 | %.1f)}][{echo php:strlen(1.25 | %.1f)}][{echo php:implode('-', [1 | %02d, 2 | %02d])}][{echo (7 | %'*5d)}][{echo ($n | %.2f | trim) . '!'}][{echo ($n | % 2)}]

[{echo 'Hello' | lower in ('hello')}][{echo 'Hello' | lower in ('x')}][{echo 'abc' | php:strlen in (3)}][{echo 'ab ' | trim like 'ab'}]

<?php

  $q      = 'ann@x.com';
  $c      = 'Paris, TX';
  $t      = ' {php:getcwd} ';
  $people = [ [ 'name' => 'Ann', 'email' => 'ann@x.com', 'city' => 'Paris, TX' ],
              [ 'name' => 'Bob', 'email' => 'bob@x.com', 'city' => 'Rome'      ] ];

?>

1[{people where='$email eq {$q}'}{$name}{/people}] 2[{people where='$email eq "{$q}"'}{$name}{/people}] 3[{people where='$city eq {$c}'}{$name}{/people}] 4[{if '{$c}' eq 'Paris, TX'}y{else}n{/if}] 5[{if {$c} eq 'Paris, TX'}y{else}n{/if}] 6[{case '{$q}'}{when 'ann@x.com'}hit{else}miss{/case}] 7[{echo php:str_contains('{$c}', ',') ? 'has' : 'no'}] 8[{echo '{$c}' . '' | php:strlen}] 9[{echo '{$c}' | php:strtoupper}] 10[{if '{$c}' . '!' eq 'Paris, TX!'}y{else}n{/if}] 11[{echo php:trim('{$t}')}] 12[{echo php:explode(' ', '{$t}') | php:implode('/', @)}]

{echo php:strlen('abcd')}

<?php

  // A heatmap's time goes by the cells it has, not by every pair of a row and a column:
  // 20,000 rows of a cell each - each its own row and column - took ten seconds.

  $cells = [];

  for ( $i = 0; $i < 20000; $i++ )
    $cells [] = [ 'r' => "r$i", 'c' => "c$i", 'v' => $i % 7 ];

  $start = hrtime ( TRUE );

?>

{chart 'heatmap', data='cells', x='c', y='r', value='v' | strlen} {echo hrtime(TRUE) - $start lt 3e9 ? 'in time' : 'too slow'}

<?php

  // The flows into a sankey node are looked up by its name, not searched for in every link
  // per node: 10,000 nodes and 20,000 links took six seconds.

  $flows = [];

  for ( $i = 0; $i < 10000; $i++ ) {
    $flows [] = [ 's' => "a$i", 't' => "b$i", 'v' => 1 ];
    $flows [] = [ 's' => "b$i", 't' => 'c' . ( $i % 100 ), 'v' => 1 ];
  }

  $start = hrtime ( TRUE );

?>

{chart 'sankey', data='flows', source='s', target='t', value='v', height=2000 | strlen} {echo hrtime(TRUE) - $start lt 3e9 ? 'in time' : 'too slow'}