Bifalgorithm post · Computer science one · Arrays of Strings

How can you compare strings by their content in PHP?

How can you compare strings by their content in PHP? (Computer science one · Arrays of Strings) — "When comparing strings in PHP, we can use the usual comparis…

Ideas in this flowchart

  • Comparación de cadenas en PHP
  • Los operadores ===, < y <= comparan cadenas lexicográficamente.
  • La comparación lexicográfica ordena las cadenas según su contenido.
  • Este enfoque generalmente se desaconseja.
  • Puede producir problemas relacionados con la conversión automática de tipos.
  • También existen diferencias entre la igualdad y desigualdad estrictas y no estrictas.
  • PHP proporciona métodos comparadores basados en el contenido de las cadenas.
  • strcmp($a, $b) recibe dos cadenas y devuelve un entero según su orden lexicográfico.
  • Devuelve un valor negativo si $a precede a $b.
  • Devuelve cero si $a y $b tienen el mismo contenido.
  • Devuelve un valor positivo si $b precede a $a.
  • strcmp("apple", "banana") devuelve un valor negativo.
  • strcmp("zelda", "mario") devuelve un valor positivo.
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How can you compare strings by their content in PHP?

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Computer science one

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sam23
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"When comparing strings in PHP, we can use the usual comparison operators such as ===, <, or <= which will compare the strings lexicographically. However, this is generally discouraged because of type juggling issues and strict vs loose equality/inequality comparisons. Instead, there are several comparator methods that PHP provides to compare strings based on their content. strcmp($a, $b) takes two strings and returns an integer based on the lexicographic ordering of $a and $b. If $a precedes $b, strcmp() returns something negative. It returns zero if $a and $b have the same content. Otherwise it returns something positive if $b precedes $a.\n\n$x = strcmp(\"apple\", \"banana\"); //x is negative\n\n$x = strcmp(\"zelda\", \"mario\"); //x is positive"

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